Symptom: a 2006 annual FAW - Volkswagen Jetta 1.6L sedan, equipped with BJH engine, mileage 33,000 km. According to the user to reflect, a month ago the car hot car appeared occasionally bad the car's fault, the recent hot car will start every time the car is not good, but the cold car everything is normal, that is, put a few days can smooth start the car.
Check Analysis: Because this car has been repaired in a number of repair shop, I consider in addition to the original fault is added human error. First, carry out basic checks, check the ignition high voltage and measuring the fuel pressure are normal, the use of fault diagnostic trouble code retrieval, presence mixture is too thick renault can clip diagnostic interface fault codes, start the car, the engine data stream oxygen sensor is displayed at -10 adjusted between -20%, indicating that the mixture too thick. For hot car mixture is too thick lead to bad the car's fault, there are a number of possible reasons for failure, but according to maintenance experience, common causes include timing dripping fuel injector, the cylinder too much coke and gas distribution errors, etc., the following targeted by one investigation.
Because when measuring the fuel pressure before, Paul pressure after pressure is normal, so you can exclude the possibility of leaking fuel injector. This car has been cleaned to avoid demolition, but mileage is shorter, and therefore can be excluded too much soot in the cylinder may be. Maintenance personnel observed when hot car starter, every time with the car and then turn off, so decided to check the pressure in the cylinder to build pressure stage if there are problems. Starting cylinder pressure measurement, found that when there is no cylinder pressure measuring 3-cylinder, cylinder pressure gauge will not be a problem, right? Other cylinder measuring cylinder pressure is normal, again measured the 3-cylinder cylinder pressure, cylinder pressure is normal, the highest cylinder pressure of time is normal. But I found that the results of several measurements 3-cylinder cylinder pressure are different, it seems the problem lies in the 3-cylinder.
Troubleshooting: Remove the valve cover, observe the three-valve cylinder sd connect found no problems. After removing the camshaft found the problem, three-cylinder intake valve spring break, and valve spring following more of a spring seat.
Review Summary: This car has been repaired because other repair shop, so I think this may be the spring seat maintenance staff put something before, the purpose is to change the broken valve spring telescopic length, this repair method is not desirable. Intake valve valve spring break, the impact of the valve stroke, resulting from mixing too thick, resulting in a hot car is not good with car trouble.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
UK SHIP NO TAX
Friday, October 31, 2014
Thursday, October 30, 2014
Wednesday, October 29, 2014
Toyota Land Cruiser idle jitter fault occurs
Models: a 02 Toyota Land Cruiser 4500,1FZ-FE engine, mileage 95,000 km.
Symptom: The owner of this car since the reaction is due to an accident repair, it appeared idling regularity jitter phenomenon, before this without any failures. After taking over the car test, when the engine is idling, sitting in the cab holding the steering obd2 scan tool wheel when the engine obviously felt regularly shake. When the engine speed above idle, jitter fault disappears, while driving regardless of any speed without adverse effects.
Troubleshooting and exclusion: let the engine idle, read the engine control system and data flow using X-431 detector, are within the normal range, and no fault code display. Since the engine control system is normal, should focus on checking high voltage. This prompted the owner of the car had an engine overhaul, repair shop was also detected in the other before, this is also the replacement of high-voltage lines, spark plugs and ignition coils. Symptom After changing but more serious than before, the mechanical part of the engine exploded again after installing the fault persists. Found during an inspection high-voltage icom a2 bmw non-original parts, replace the original high-voltage lines, fault phenomenon than previously reduced, but not completely ruled out. Remove the spark plug observation, using a platinum spark plugs, to work properly. Discover the original maintenance manual was informed that this car spark plug for the ordinary type spark plugs, replace them all into a common type of spark plug after Toyota's dedicated, commissioning, fault disappears.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
Symptom: The owner of this car since the reaction is due to an accident repair, it appeared idling regularity jitter phenomenon, before this without any failures. After taking over the car test, when the engine is idling, sitting in the cab holding the steering obd2 scan tool wheel when the engine obviously felt regularly shake. When the engine speed above idle, jitter fault disappears, while driving regardless of any speed without adverse effects.
Troubleshooting and exclusion: let the engine idle, read the engine control system and data flow using X-431 detector, are within the normal range, and no fault code display. Since the engine control system is normal, should focus on checking high voltage. This prompted the owner of the car had an engine overhaul, repair shop was also detected in the other before, this is also the replacement of high-voltage lines, spark plugs and ignition coils. Symptom After changing but more serious than before, the mechanical part of the engine exploded again after installing the fault persists. Found during an inspection high-voltage icom a2 bmw non-original parts, replace the original high-voltage lines, fault phenomenon than previously reduced, but not completely ruled out. Remove the spark plug observation, using a platinum spark plugs, to work properly. Discover the original maintenance manual was informed that this car spark plug for the ordinary type spark plugs, replace them all into a common type of spark plug after Toyota's dedicated, commissioning, fault disappears.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
Tuesday, October 28, 2014
Exclude the public ABS system pump Trouble Codes
Many colleagues in the maintenance of VW's ABS system may encounter such a failure: ABS warning light suddenly lit, turn the ignition switch to restart later returned to normal, not necessarily when it will light up themselves, and lights the number will gradually frequent.
Encounter this failure, natural to use 1552 diagnostic instruments to detect the fault codes stored, if it detects a fault code history for 01276, and models involved are Shanghai auto diagnosis Volkswagen Passat B5, the era of Superman or Volkswagen Jetta or red car. That would be the first observation confirmed the identity of ATE ABS computer above. For the interpretation of this fault code is ABS pump circuit failure, in addition to maintenance, when a circuit should first general inspection, the most important thing is that the internal models of the ABS computer will be open welding fault circuit board. Many people in the detection of peripheral circuits normally require customers to go after replacement ABS computer assembly (with motor master cylinder), this approach too expensive, because the computer board can be repaired.
The models of the computer board is sealed plastic case. Repair methods are as follows: Remove the PC board from the above ABS master cylinder, with a sharp blade or a hacksaw carefully cut open along the plastic slit marks, then "a" word screwdriver to carefully pry open the cover. So you can see all the computers in the computer external terminal board of the joints, with a magnifying glass carefully observe the ABS pump motor access to the two largest plug terminal elm327 bluetooth solder joint, you'll see it and touch around the open welding solder gap. The remaining task is to use a small electric iron re-weld them firmly, there is another few to each wheel speed sensor also fixed at the welding point, because there are a few cases the sensor terminal open welding faults. After the service is completed to pay attention to good sealant to seal the computer cover, and then install the master cylinder to go above. Eliminate the fault codes, brakes deflated.
http://www.obdnews.com/index.php/category/mileage-programmer/
Encounter this failure, natural to use 1552 diagnostic instruments to detect the fault codes stored, if it detects a fault code history for 01276, and models involved are Shanghai auto diagnosis Volkswagen Passat B5, the era of Superman or Volkswagen Jetta or red car. That would be the first observation confirmed the identity of ATE ABS computer above. For the interpretation of this fault code is ABS pump circuit failure, in addition to maintenance, when a circuit should first general inspection, the most important thing is that the internal models of the ABS computer will be open welding fault circuit board. Many people in the detection of peripheral circuits normally require customers to go after replacement ABS computer assembly (with motor master cylinder), this approach too expensive, because the computer board can be repaired.
The models of the computer board is sealed plastic case. Repair methods are as follows: Remove the PC board from the above ABS master cylinder, with a sharp blade or a hacksaw carefully cut open along the plastic slit marks, then "a" word screwdriver to carefully pry open the cover. So you can see all the computers in the computer external terminal board of the joints, with a magnifying glass carefully observe the ABS pump motor access to the two largest plug terminal elm327 bluetooth solder joint, you'll see it and touch around the open welding solder gap. The remaining task is to use a small electric iron re-weld them firmly, there is another few to each wheel speed sensor also fixed at the welding point, because there are a few cases the sensor terminal open welding faults. After the service is completed to pay attention to good sealant to seal the computer cover, and then install the master cylinder to go above. Eliminate the fault codes, brakes deflated.
http://www.obdnews.com/index.php/category/mileage-programmer/
How to connect scania vci 2 to your car
Scania VCI2 is a tool that is used together with Scania Diagnosis and Programmer 3 (SDP3) software to diagnose and troubleshoot Scania heavy vehicles and trucks.
How to connect scania vci 2 to your car
How to connect scania vci 2 to your car
Monday, October 27, 2014
Sunday, October 26, 2014
Abnormal sound while turning the BMW X5
Mileage of about 120,000 kM, models for the E701 equipped with N52 engine 2010 BMW X5 sport utility vehicle. Users reflect: abnormal sound while turning the car.
Check Analysis: maintenance personnel test found the car at the time of straight no noise, but at low speed super mb star c3 turns or pivot turn to hear "Pata" sound. After checking the car lift and found no signs of any parts are loose.
Since the abnormal sound in the steering system when the issue by force, so there is a gap suspect steering components. The tie rod, under the arm, shock absorbers and axle swap one by one with a normal car, and immediately after each test to replace a part. When these attempts all done, still unable to find the point of failure.
Analysis of the structure of the steering system, found in addition to the already replaced parts, the front wheel bearing is actually steering system transmission renault can clip diagnostic interface parts, and it is because there is no gap in the axial direction, so when considering the issue can easily be ignored.
Troubleshooting: Replace the front wheel bearings, repeated test confirmed troubleshooting.
http://www.uobd2.net/wholesale/digimaster-3-digimaster-iii-digital-odometer-correction-master.html
Check Analysis: maintenance personnel test found the car at the time of straight no noise, but at low speed super mb star c3 turns or pivot turn to hear "Pata" sound. After checking the car lift and found no signs of any parts are loose.
Since the abnormal sound in the steering system when the issue by force, so there is a gap suspect steering components. The tie rod, under the arm, shock absorbers and axle swap one by one with a normal car, and immediately after each test to replace a part. When these attempts all done, still unable to find the point of failure.
Analysis of the structure of the steering system, found in addition to the already replaced parts, the front wheel bearing is actually steering system transmission renault can clip diagnostic interface parts, and it is because there is no gap in the axial direction, so when considering the issue can easily be ignored.
Troubleshooting: Replace the front wheel bearings, repeated test confirmed troubleshooting.
http://www.uobd2.net/wholesale/digimaster-3-digimaster-iii-digital-odometer-correction-master.html
Friday, October 24, 2014
The engine is not running smoothly Troubleshooting
Engine work is not stable, it directly affects the car's power and economy, as well as passenger ride comfort, vehicle emissions of pollutants and so on. So when our vehicles instability occurs when the engine is working, how do we determine the reasons for its failure to restore normal working methods.
1, check spark plugs and sub-cylinder line. Spark plug gap meets the original technical standards, sub-cylinder line resistance values are also consistent with the technical requirements, which do not meet the need for adjustment or replacement.
2, the need for testing the fuel pressure system. Using fuel pressure gauge and fuel gauge components, connectors tubing and fuel gauge. Start the engine and make it into the idling fuel elm327 bluetooth gauge reading should be within (2.8-3.3kgf / cm2 40-47psi) range 270-320kpa. If the pressure exceeds the technical specifications, you need to replace the fuel pressure regulator and fuel filter.
3, check the cylinder air nozzle. Enter the engine idling, respectively disconnect each injector plug, check whether there are changes idle, if disconnected injector for each cylinder, idle reduction is basically the same, then the fuel injectors work were normal. When disconnecting one injector, engine idling and stability did not change, you need to measure the resistance value injector plugs are 10-13, if you do not meet the standards replace the nozzle. Of course, also need to check the PGM-FI main relay connector plug with the wire connection between the connection point between the point of rupture and the injectors if the wires, connection failure and other failures.
4, fuel pump and fuel pump circuit checks. Check the fuel pump: Remove the fuel tank cap, ignition switch in the ON position, the fuel filler can hear the sound of the pump operation, under normal operating conditions, when the ignition switch is ON, the fuel pump should run two seconds bell. If the fuel pump does not run, first check the pump Scania VCI 2 SDP3 insurance is burned. Check whether the conduction between PGM-FI main relay and the plug terminals through and so on.
5, followed also check the cylinder compression pressure, intake and exhaust valve clearance, fuel vapor control solenoid valve, EGR valve cylinder work, intake manifold leaks and so on.
Instability causes the engine to work a lot, so in practical work should be analyzed according to the specific circumstances in order to find out the cause of the malfunction and accurate method to solve the problem.
http://www.obdnews.com
1, check spark plugs and sub-cylinder line. Spark plug gap meets the original technical standards, sub-cylinder line resistance values are also consistent with the technical requirements, which do not meet the need for adjustment or replacement.
2, the need for testing the fuel pressure system. Using fuel pressure gauge and fuel gauge components, connectors tubing and fuel gauge. Start the engine and make it into the idling fuel elm327 bluetooth gauge reading should be within (2.8-3.3kgf / cm2 40-47psi) range 270-320kpa. If the pressure exceeds the technical specifications, you need to replace the fuel pressure regulator and fuel filter.
3, check the cylinder air nozzle. Enter the engine idling, respectively disconnect each injector plug, check whether there are changes idle, if disconnected injector for each cylinder, idle reduction is basically the same, then the fuel injectors work were normal. When disconnecting one injector, engine idling and stability did not change, you need to measure the resistance value injector plugs are 10-13, if you do not meet the standards replace the nozzle. Of course, also need to check the PGM-FI main relay connector plug with the wire connection between the connection point between the point of rupture and the injectors if the wires, connection failure and other failures.
4, fuel pump and fuel pump circuit checks. Check the fuel pump: Remove the fuel tank cap, ignition switch in the ON position, the fuel filler can hear the sound of the pump operation, under normal operating conditions, when the ignition switch is ON, the fuel pump should run two seconds bell. If the fuel pump does not run, first check the pump Scania VCI 2 SDP3 insurance is burned. Check whether the conduction between PGM-FI main relay and the plug terminals through and so on.
5, followed also check the cylinder compression pressure, intake and exhaust valve clearance, fuel vapor control solenoid valve, EGR valve cylinder work, intake manifold leaks and so on.
Instability causes the engine to work a lot, so in practical work should be analyzed according to the specific circumstances in order to find out the cause of the malfunction and accurate method to solve the problem.
http://www.obdnews.com
Thursday, October 23, 2014
Wednesday, October 22, 2014
Toyota bullet car 2TZ Model Engine Troubleshooting
Toyota bullet car 2TZ model engine when the throttle pedal is depressed, the slightest increase engine speed, oil pressure warning light that is lit, relaxing pedal returned to normal.
Bullet a Toyota car, engine type 2TZ, after the overhaul running-in process, everything is normal at idle, but when depressing the throttle pedal, the engine speed the slightest increase, oil pressure warning light that is lit, relaxing pedal is restored normal.
According to the above symptoms, check the oil level, line, both of which were normal; pump before digimaster 3 update installation, test the fuel supply, normal; driven by the engine with the starter and check the oil pressure is normal; replace the oil pressure sensor fault persists. Therefore, the suspect set the filter clogging, when idling, need less oil, clogged section does not affect the oil pressure build; but at high speed, the need to fuel large set of filters to reduce the area of the oil is not timely, the impact of the oil. But when the engine overhaul parts are carried out a thorough cleaning, there can be no more dirt, open sump check strainer no exception. After repeated careful examination, suddenly found the oil pan to the inside bottom there is a raised position, a closer look at what are the parts strainer, then fix it undisturbed, after installed for testing, troubleshooting a.
The reason for the raised portion of the original set of filters that make parts of the reduced toyota intelligent tester 2 space, in addition to deposit less fuel, engine idling time to pump less oil, this part does not affect the oil pressure build; When the high-speed, oil pump output big oil, set on the site of the oil filter quickly be pumped oil elsewhere to supplement here, due to the raised part due so that the oil supply is not timely, the amount of oil pump and engine operating conditions do not match, so resulting in lower oil pressure, machine oil lamps lit.
http://www.obdnews.com/index.php/category/launch-x431-2/
Bullet a Toyota car, engine type 2TZ, after the overhaul running-in process, everything is normal at idle, but when depressing the throttle pedal, the engine speed the slightest increase, oil pressure warning light that is lit, relaxing pedal is restored normal.
According to the above symptoms, check the oil level, line, both of which were normal; pump before digimaster 3 update installation, test the fuel supply, normal; driven by the engine with the starter and check the oil pressure is normal; replace the oil pressure sensor fault persists. Therefore, the suspect set the filter clogging, when idling, need less oil, clogged section does not affect the oil pressure build; but at high speed, the need to fuel large set of filters to reduce the area of the oil is not timely, the impact of the oil. But when the engine overhaul parts are carried out a thorough cleaning, there can be no more dirt, open sump check strainer no exception. After repeated careful examination, suddenly found the oil pan to the inside bottom there is a raised position, a closer look at what are the parts strainer, then fix it undisturbed, after installed for testing, troubleshooting a.
The reason for the raised portion of the original set of filters that make parts of the reduced toyota intelligent tester 2 space, in addition to deposit less fuel, engine idling time to pump less oil, this part does not affect the oil pressure build; When the high-speed, oil pump output big oil, set on the site of the oil filter quickly be pumped oil elsewhere to supplement here, due to the raised part due so that the oil supply is not timely, the amount of oil pump and engine operating conditions do not match, so resulting in lower oil pressure, machine oil lamps lit.
http://www.obdnews.com/index.php/category/launch-x431-2/
Tuesday, October 21, 2014
Toyota Dengfeng engine starting Faults
Faults Symptom: Engine start is bad. Engine start up, but it touches on the normal operation of the starter motor.
Troubleshooting: Start the engine, although early burst, but start it up. Starting repeated several times, even the beginning of the burst is stopped. Observed pulsation damper, screw head drum out, fuel pressures should be no problem. Check engine lights are lit.
Open the engine compartment lid, short self-diagnostic connector TE1 - E1 terminal, the survey scania vci 2 self-diagnostic system, code self-diagnostic system output is 11 and 44, said that what the meaning is unclear. Unplug electronic fuel injection system fuse, eliminate self-diagnostic system fault codes, and then start the engine, the engine still does not start up.
Self-diagnostic fault codes again survey system, the output is 14. In contrast with the fault code table, which is the ignition signal systems. To investigate the contents are: ① ignition + B, IGf, IGt system wiring harness and connectors; ② ignition; ③ engine control computer.
This car has not been out of traffic accidents, so the cause is about ignition. But the price is very expensive ignition. So and so final confirmation of making a decision.
Start the engine to be put on trial after an old igniter, the result of the engine or start up. Unplug the central high voltage cable distributor spark test, there is a strong ignition spark ignition system proved normal. Hand shook harness, engine still does not start. Now remaining only a computer.
Replace the old distributor, or test engine start up. Self-diagnostic fault code system ECU Chip Tunning Tools output is still 14. Again put to the old computer, start the engine, once it start up. It seems the cause is still on the computer.
The original distributor back up, unplug the electronic fuel injection system fuse, eliminate self-diagnosis fault code memory, check the ignition timing, check the various parts of the wiring connector. And other engine cold start the engine later. Once the engine start up, fast idle running well, the engine running normally. Then investigate self-diagnostic system, the output code represents the control system is normal.
http://www.uobd2.net/wholesale/toyota-intelligent-tester-it2.html
Troubleshooting: Start the engine, although early burst, but start it up. Starting repeated several times, even the beginning of the burst is stopped. Observed pulsation damper, screw head drum out, fuel pressures should be no problem. Check engine lights are lit.
Open the engine compartment lid, short self-diagnostic connector TE1 - E1 terminal, the survey scania vci 2 self-diagnostic system, code self-diagnostic system output is 11 and 44, said that what the meaning is unclear. Unplug electronic fuel injection system fuse, eliminate self-diagnostic system fault codes, and then start the engine, the engine still does not start up.
Self-diagnostic fault codes again survey system, the output is 14. In contrast with the fault code table, which is the ignition signal systems. To investigate the contents are: ① ignition + B, IGf, IGt system wiring harness and connectors; ② ignition; ③ engine control computer.
This car has not been out of traffic accidents, so the cause is about ignition. But the price is very expensive ignition. So and so final confirmation of making a decision.
Start the engine to be put on trial after an old igniter, the result of the engine or start up. Unplug the central high voltage cable distributor spark test, there is a strong ignition spark ignition system proved normal. Hand shook harness, engine still does not start. Now remaining only a computer.
Replace the old distributor, or test engine start up. Self-diagnostic fault code system ECU Chip Tunning Tools output is still 14. Again put to the old computer, start the engine, once it start up. It seems the cause is still on the computer.
The original distributor back up, unplug the electronic fuel injection system fuse, eliminate self-diagnosis fault code memory, check the ignition timing, check the various parts of the wiring connector. And other engine cold start the engine later. Once the engine start up, fast idle running well, the engine running normally. Then investigate self-diagnostic system, the output code represents the control system is normal.
http://www.uobd2.net/wholesale/toyota-intelligent-tester-it2.html
Monday, October 20, 2014
BMW 730Li without electricity generator
BMW N52 engine model F02 730Li sedan. The car does not appear generator power during normal driving, the oil level can not detect other failures.
Troubleshooting: After receiving the car, that the car can not be started again after the stop, lap battery, start the car and driven back to the factory and found that the car can not detect the oil level. Connect diagnostic and found several fault code. Delete query again, only BSD bus communication failure.
According to the circuit diagram that has a generator (G6524) on this car BSD bus, oil condition sensor (B62540), electric mb sd connect c4 coolant pump (M6035). Find bus (36,37,42 port) at the plug in the engine computer, measured with a multimeter, no voltage. When voltage is 8V will be open around the ignition switch under normal conditions. Unplug the unit were on the bus (but must ensure that there is always a component connected to the bus), but no matter which one unplug, never on the bus voltage output, the larger the computer to determine the possibility of damage. Measured with a multimeter, the bus is shorted to ground. Open the front of the engine computer shell, found associated with BSD components are in the back of the PC board. Difficult to open the back of the shell, only the back of the BSD associated components corresponding parts cut (to find a scrap computer, open, determine the location of the BSD components related to find the exact location, then put the computer in need of repair with wheels cut). Pin down the measure, found the bus to enter a BSD model 27u transistor, through the transistor into a model for the 1020 IJA 8 pin chip inside. By querying the data and found that IJA 1020 is a communication piece. Measuring transistor, breakdown. In order to successfully coefficient highs, decided to replace the communication piece together with the transistor, then contact the supplier of electronic components shipped. After receiving element refitted, test, the voltage on the bus. When all components are plugged on the bus, and then measured, not any voltage, indicating which parts are still on the bus problem. Unplug the individual components one by one, disconnect the generator when the voltage normal. So they changed the generator, start the vehicle icom a2 properly. Can also be displayed on the central display normal oil level, and measuring the generator voltage is normal. Clear fault codes, BSD bus communication fault code is not reproduced.
Service Summary: The analysis of the case through the maintenance, we can see that, for the maintenance of high-end models, the key is to identify the root cause of the problem, not blindly replacement assembly parts. High-end models for fault diagnosis of electrical faults, 思路尤 important, while refined inspection of electronic components is also quite important. Since the electronic control system for more precise calculation of information but also to control the increasingly high demand, so the traditional service will become history. Change the traditional maintenance concepts, establish a correct concept of scientific thinking is a prerequisite for a new generation of auto repair person.
http://www.uobd2.net/wholesale/obd2-code-scanner/
Troubleshooting: After receiving the car, that the car can not be started again after the stop, lap battery, start the car and driven back to the factory and found that the car can not detect the oil level. Connect diagnostic and found several fault code. Delete query again, only BSD bus communication failure.
According to the circuit diagram that has a generator (G6524) on this car BSD bus, oil condition sensor (B62540), electric mb sd connect c4 coolant pump (M6035). Find bus (36,37,42 port) at the plug in the engine computer, measured with a multimeter, no voltage. When voltage is 8V will be open around the ignition switch under normal conditions. Unplug the unit were on the bus (but must ensure that there is always a component connected to the bus), but no matter which one unplug, never on the bus voltage output, the larger the computer to determine the possibility of damage. Measured with a multimeter, the bus is shorted to ground. Open the front of the engine computer shell, found associated with BSD components are in the back of the PC board. Difficult to open the back of the shell, only the back of the BSD associated components corresponding parts cut (to find a scrap computer, open, determine the location of the BSD components related to find the exact location, then put the computer in need of repair with wheels cut). Pin down the measure, found the bus to enter a BSD model 27u transistor, through the transistor into a model for the 1020 IJA 8 pin chip inside. By querying the data and found that IJA 1020 is a communication piece. Measuring transistor, breakdown. In order to successfully coefficient highs, decided to replace the communication piece together with the transistor, then contact the supplier of electronic components shipped. After receiving element refitted, test, the voltage on the bus. When all components are plugged on the bus, and then measured, not any voltage, indicating which parts are still on the bus problem. Unplug the individual components one by one, disconnect the generator when the voltage normal. So they changed the generator, start the vehicle icom a2 properly. Can also be displayed on the central display normal oil level, and measuring the generator voltage is normal. Clear fault codes, BSD bus communication fault code is not reproduced.
Service Summary: The analysis of the case through the maintenance, we can see that, for the maintenance of high-end models, the key is to identify the root cause of the problem, not blindly replacement assembly parts. High-end models for fault diagnosis of electrical faults, 思路尤 important, while refined inspection of electronic components is also quite important. Since the electronic control system for more precise calculation of information but also to control the increasingly high demand, so the traditional service will become history. Change the traditional maintenance concepts, establish a correct concept of scientific thinking is a prerequisite for a new generation of auto repair person.
http://www.uobd2.net/wholesale/obd2-code-scanner/
Sunday, October 19, 2014
The 2009 Fiesta car acceleration undesirable
Symptom: a 2009 Ford Fiesta sedan models, equipped with 1.5 L VVT inline four-cylinder engine and four-speed manual transmission, the total mileage of about 20,000 km. According to the driver to reflect the recent failure of the car appeared to accelerate undesirable, is to step on the accelerator pedal in the end, the speed does not exceed 100 km / h.
Troubleshooting followed the car, the first dynamic test. In automatic mode, when the speed reaches 100 krr by, if it continues to acceleration, the transmission will automatically downshift from 4 block down 3 block, block from 3 to 2 block, the speed gradually declined; in manual transmission mode , as in the four-speed position, regardless of how step on the accelerator pedal, the engine speed will not exceed 300011min. Then the static fault code scanner test, the slow step on the accelerator pedal, the engine speed up to 6600 r / min; slam the accelerator pedal, the engine speed up to only 4000 r / min.
Connection IDS, did not detect the fault code, then had to start from the test results. Under normal circumstances, if the engine speed to 6600 T / nùn, the engine control unit will control the oil off to play a role in the speed limit. Static test results can be seen from the oil off slow acceleration time is normal, but in the case of sudden acceleration can be seen as the oil off the timing advance. The fundamental reason for this situation should be enough oil supply, the direct cause of much of the oil pipeline blockage, such as for pipe deformation, fuel containing impurities.
Connect the fuel pressure gauge test, low speed when the fuel pressure is 4 bar (1bar = 100 kPa), normal; but only when hard acceleration fuel pressure 2.5 bar, low. Check the fuel pump to the fuel rail for the pipeline, and no abnormalities were found; check the fuel quality, also found no abnormalities. The fuel system for demolition washing machine connected to the fuel rail test, acceleration performance back to normal. Is it a problem with the fuel pump? Then replace the fuel pump, tubing connections for the good test, but the fault remains. This is strange, much deliberation, due to see the situation for internal tubing, so suspect the problem still lies in the supply tubing. The fuel pump to the oil supply pipe rails removed, the side with a piece of cloth wrapped around the tubing for, and then inserted into the high-pressure air gun for the other diagnostic tool for car side of the tubing. Hair felt something at the start of block, and later on smoothly, and will Jacobsson open and found a small piece of sponge, and has been soaked in yellow. Reconnect after a good test for the pipeline, acceleration performance back to normal.
Troubleshooting: The tubing for blockage after sponge removal of commissioning, troubleshooting.
Failure Analysis: for the pipeline is blocked sponge, or slow acceleration at idle, the engine fuel demand is not instantaneous, then the fuel reaches the fuel rail to meet the needs through the sponge, so in these two conditions, the engine can be work; but when hard acceleration, the engine instant fuel demand for larger, this time to reach the fuel oil rail through the sponge can not meet the need, so there will be acceleration trouble. For such a failure, mostly by observing changes of failure to identify the cause fuel pressure failure.
http://www.uobd2.net/wholesale/toyota-intelligent-tester-it2.html
Troubleshooting followed the car, the first dynamic test. In automatic mode, when the speed reaches 100 krr by, if it continues to acceleration, the transmission will automatically downshift from 4 block down 3 block, block from 3 to 2 block, the speed gradually declined; in manual transmission mode , as in the four-speed position, regardless of how step on the accelerator pedal, the engine speed will not exceed 300011min. Then the static fault code scanner test, the slow step on the accelerator pedal, the engine speed up to 6600 r / min; slam the accelerator pedal, the engine speed up to only 4000 r / min.
Connection IDS, did not detect the fault code, then had to start from the test results. Under normal circumstances, if the engine speed to 6600 T / nùn, the engine control unit will control the oil off to play a role in the speed limit. Static test results can be seen from the oil off slow acceleration time is normal, but in the case of sudden acceleration can be seen as the oil off the timing advance. The fundamental reason for this situation should be enough oil supply, the direct cause of much of the oil pipeline blockage, such as for pipe deformation, fuel containing impurities.
Connect the fuel pressure gauge test, low speed when the fuel pressure is 4 bar (1bar = 100 kPa), normal; but only when hard acceleration fuel pressure 2.5 bar, low. Check the fuel pump to the fuel rail for the pipeline, and no abnormalities were found; check the fuel quality, also found no abnormalities. The fuel system for demolition washing machine connected to the fuel rail test, acceleration performance back to normal. Is it a problem with the fuel pump? Then replace the fuel pump, tubing connections for the good test, but the fault remains. This is strange, much deliberation, due to see the situation for internal tubing, so suspect the problem still lies in the supply tubing. The fuel pump to the oil supply pipe rails removed, the side with a piece of cloth wrapped around the tubing for, and then inserted into the high-pressure air gun for the other diagnostic tool for car side of the tubing. Hair felt something at the start of block, and later on smoothly, and will Jacobsson open and found a small piece of sponge, and has been soaked in yellow. Reconnect after a good test for the pipeline, acceleration performance back to normal.
Troubleshooting: The tubing for blockage after sponge removal of commissioning, troubleshooting.
Failure Analysis: for the pipeline is blocked sponge, or slow acceleration at idle, the engine fuel demand is not instantaneous, then the fuel reaches the fuel rail to meet the needs through the sponge, so in these two conditions, the engine can be work; but when hard acceleration, the engine instant fuel demand for larger, this time to reach the fuel oil rail through the sponge can not meet the need, so there will be acceleration trouble. For such a failure, mostly by observing changes of failure to identify the cause fuel pressure failure.
http://www.uobd2.net/wholesale/toyota-intelligent-tester-it2.html
Friday, October 17, 2014
Super MB STAR Updater v3.0 Install Guide
How to get new version v3.0
1. Upgrade directly from Super MB STAR Updater v2.0.0.1
2. Download from Super MB STAR Offical website http://www.supermbstar.com/update/
3. Contact with your local dealer to get the upgrade installation software
Installation
1. After get the new version of Super MB STAR Updater V3.0, please insert the USB Key, and then install this software in Super MB STAR OS. (Do not install in your local HDD)
2. Un-zip it on the Super MB STAR Desktop, double click to run choose the language, and click [OK]
3. Click [Next], as shown below
4. Setting the installation path, click [Next] as default install path.
5. Create desktop icon is necessary, click [Next] as shown below
6. Click [Install] to start the installation after check everything alright.
7. Software requires user install Microsoft Visual C++, please click [Next] to continue.
8. Click [Install] to start installing visual C++
9. Click [Finish] to continue.
10. Click [Finish] to finish the installation of Super MB STAR Updater V3.0
1. Upgrade directly from Super MB STAR Updater v2.0.0.1
2. Download from Super MB STAR Offical website http://www.supermbstar.com/update/
3. Contact with your local dealer to get the upgrade installation software
Installation
1. After get the new version of Super MB STAR Updater V3.0, please insert the USB Key, and then install this software in Super MB STAR OS. (Do not install in your local HDD)
2. Un-zip it on the Super MB STAR Desktop, double click to run choose the language, and click [OK]
3. Click [Next], as shown below
4. Setting the installation path, click [Next] as default install path.
5. Create desktop icon is necessary, click [Next] as shown below
6. Click [Install] to start the installation after check everything alright.
7. Software requires user install Microsoft Visual C++, please click [Next] to continue.
8. Click [Install] to start installing visual C++
9. Click [Finish] to continue.
10. Click [Finish] to finish the installation of Super MB STAR Updater V3.0
Thursday, October 16, 2014
The 2007 LaCrosse cars two rear brake light does not shine
Symptom: a 2007 model Shanghai GM Buick LaCrosse 2.4 L sedan, braking occurs when two rear brake lights are not bright, but brake lights normal phenomenon.
Check Analysis: validation failure phenomenon found step on the brake pedal when the meal, the normal brake lights lit, but the two rear brake lights are not lit, the other tail mini elm327 lights are working properly. This thought is very simple, after removing the taillights, brake light bulb replacement can be solved, but found the rear brake replacement brake light bulb, the two rear brake lights still do not light up. After using a multimeter to test two brake lamp, no power supply. Remove the front passenger side of the fuse box cover inspection, brake lights the fuse is good, but on which there is a voltage of 12 V. Check car circuit diagram, which has been found to LaCrosse sedan brake light control circuit and other Buick car is different from the original brake light switch turns the brake pedal position sensor, the sensor signals to the body control module (BCM after), BCM receives the signal output by the terminal J2-30 12V voltage signal, which is divided into two-way, all the way to direct light up brake lights, another way to control parking lights relay, the relay is controlled by two rear brake lights. According to the circuit diagram analysis, braking brake lights can be lit, but the two rear brake lights are not lit, so that ruled the brake pedal position sensor and the BCM failure may fault the range of BCM's output multidiag pro terminals J2-30 after the circuit, including the parking lights to the rear brake lights relay lines. Open the cover of the instrument panel on the left side, under the two relays, the relay is in blue lights relay, the relay measurements, found 12V voltage input, but no voltage output, determined that the relay is damaged.
Troubleshooting: Replace the parking lights relay.
http://www.uobd2.net/wholesale/renault-can-clip-latest-diagnostic-tool.html
Check Analysis: validation failure phenomenon found step on the brake pedal when the meal, the normal brake lights lit, but the two rear brake lights are not lit, the other tail mini elm327 lights are working properly. This thought is very simple, after removing the taillights, brake light bulb replacement can be solved, but found the rear brake replacement brake light bulb, the two rear brake lights still do not light up. After using a multimeter to test two brake lamp, no power supply. Remove the front passenger side of the fuse box cover inspection, brake lights the fuse is good, but on which there is a voltage of 12 V. Check car circuit diagram, which has been found to LaCrosse sedan brake light control circuit and other Buick car is different from the original brake light switch turns the brake pedal position sensor, the sensor signals to the body control module (BCM after), BCM receives the signal output by the terminal J2-30 12V voltage signal, which is divided into two-way, all the way to direct light up brake lights, another way to control parking lights relay, the relay is controlled by two rear brake lights. According to the circuit diagram analysis, braking brake lights can be lit, but the two rear brake lights are not lit, so that ruled the brake pedal position sensor and the BCM failure may fault the range of BCM's output multidiag pro terminals J2-30 after the circuit, including the parking lights to the rear brake lights relay lines. Open the cover of the instrument panel on the left side, under the two relays, the relay is in blue lights relay, the relay measurements, found 12V voltage input, but no voltage output, determined that the relay is damaged.
Troubleshooting: Replace the parking lights relay.
http://www.uobd2.net/wholesale/renault-can-clip-latest-diagnostic-tool.html
Wednesday, October 15, 2014
Toyota Camry engine ignition fault repair
Symptom: a Toyota Camry sedan engine has fire signs, but not up and running.
Troubleshooting: As the electronic control of the engine control system is more complex, but reliability is relatively high, we in principle easier issues first to be checked.
First check whether the normal high-voltage arcing. Unplug the power lines were arcing single cylinder test, found the spark intense, bright, proof ignition system properly.
Then check the intake passage is unobstructed. Remove the air filter, found scania vci 2 above the dust more, with high-pressure air after blowing installed, start the engine, the fault persists.
Then check the oil. The oil pressure gauge connected to the fuel line, start the engine, the fuel pressure measured only 10kMPa (normal is between 230 ~ 250kPa). There is no leakage of pipeline inspection place, turn the ignition switch can hear the sound of the electric fuel pump operation; therefore believe may be due to clogged fuel filter or tubing, causing the hydraulic system can not be established. So replacing the fuel filter, clean lines, and use high-pressure air blowing, but still start after loading vain. Then retest oil is 110kPa, concluded that the electric fuel pump is damaged, can not afford to build pressure. Removed from the fuel tank fuel pump, fuel pump carefully observed a crack at the oil port, estimated fuel leaked from here, back to the tank, the test ran so decisively, the replacement of a new fuel pump, troubleshooting.
Conclusion: EFI engine electronic control system reliability is relatively high, such as computers before traveling over 150,000 km may be faulty, so should do first encounter EFI engine failure foundation inspection, it is difficult to find fault after the first transaction. According to experience, EFI engine failure Piwis Tester II Updated occurred in the oil on the road, because the fuel injection system of high precision, high quality requirements for fuel, so the oil on the road most of the oil-related failures, such as the common fault "electric fuel pump enough oil." and "injector bad" are related to the fuel quality. Of course, this example is rather special, was asked by the driver learned that this car chassis had been scratched stones, may encounter the fuel pump, causing damage, the long-running, gradually severe that the engine will not start.
http://www.uobd2.net/wholesale/digimaster-3-digimaster-iii-digital-odometer-correction-master.html
Troubleshooting: As the electronic control of the engine control system is more complex, but reliability is relatively high, we in principle easier issues first to be checked.
First check whether the normal high-voltage arcing. Unplug the power lines were arcing single cylinder test, found the spark intense, bright, proof ignition system properly.
Then check the intake passage is unobstructed. Remove the air filter, found scania vci 2 above the dust more, with high-pressure air after blowing installed, start the engine, the fault persists.
Then check the oil. The oil pressure gauge connected to the fuel line, start the engine, the fuel pressure measured only 10kMPa (normal is between 230 ~ 250kPa). There is no leakage of pipeline inspection place, turn the ignition switch can hear the sound of the electric fuel pump operation; therefore believe may be due to clogged fuel filter or tubing, causing the hydraulic system can not be established. So replacing the fuel filter, clean lines, and use high-pressure air blowing, but still start after loading vain. Then retest oil is 110kPa, concluded that the electric fuel pump is damaged, can not afford to build pressure. Removed from the fuel tank fuel pump, fuel pump carefully observed a crack at the oil port, estimated fuel leaked from here, back to the tank, the test ran so decisively, the replacement of a new fuel pump, troubleshooting.
Conclusion: EFI engine electronic control system reliability is relatively high, such as computers before traveling over 150,000 km may be faulty, so should do first encounter EFI engine failure foundation inspection, it is difficult to find fault after the first transaction. According to experience, EFI engine failure Piwis Tester II Updated occurred in the oil on the road, because the fuel injection system of high precision, high quality requirements for fuel, so the oil on the road most of the oil-related failures, such as the common fault "electric fuel pump enough oil." and "injector bad" are related to the fuel quality. Of course, this example is rather special, was asked by the driver learned that this car chassis had been scratched stones, may encounter the fuel pump, causing damage, the long-running, gradually severe that the engine will not start.
http://www.uobd2.net/wholesale/digimaster-3-digimaster-iii-digital-odometer-correction-master.html
Tuesday, October 14, 2014
Engine suddenly no longer beat
Timing toothed belt is an important component of the engine must always check whether its in good condition, and in strict accordance with the provisions of the actual use of regular replacement cycles and vehicles (eg replacement cycle Jetta sedan timing gear belt of 60,000 km). Not all of the engine timing gear will cause damage to the valve with a fracture, it is whether the valve of the cylinder toyota intelligent tester 2 occupied by the piston when the working chamber decision. To achieve good power output, some of the engine of the vehicle the distance between the valve and the piston in proximity, so that when the toothed belt is broken once, the piston can easily collide with the valve, resulting in damage to the valve.
Check and replace if being regularly toothed belt, you do not have to worry about breakage and valve gear with the situation appeared to be the top bend.
Generally, premature rupture causes toothed belt are the following.
(1) toothed belt itself because of quality problems with the timing gear is a key component, so a lot of the engine using imported parts, so a higher price, but never cheaper to buy can not guarantee the quality of the toothed belt, or if it will cause breakage big loss.
(2) installation problems with timing gear generally requires the use of special tools, and the operation is more complex. If disassembly is not standardized, it is easy to make the teeth with internal cracks, or the appearance of the upper and lower parts of the tooth with the other flat is not a case of early rupture causing tooth belt.
(3) tensioner or pump damage are generally required when the toothed belt tensioner tensioner and guide through the cooling water pumps are mostly driven by the timing gear belt, tensioner or pump Francais KESS V2 operation if the seizure has not been timely replacement, it will cause severe wear toothed belt, and even sudden rupture.
(4) subject to corrosion of oil and other liquids toothed belt is rubber parts, lubricants and other liquids after contact, can cause corrosion and premature failure.
(5) improper use of vehicles starting or accelerating too fast, timing toothed belt tension due to the sudden emergence of transient elongation, or even rupture. For example, when the vehicle is stuck car, if a fierce slam the accelerator pedal and clutch pedal loose ways to make cars out of the crater, toothed belt may break.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Check and replace if being regularly toothed belt, you do not have to worry about breakage and valve gear with the situation appeared to be the top bend.
Generally, premature rupture causes toothed belt are the following.
(1) toothed belt itself because of quality problems with the timing gear is a key component, so a lot of the engine using imported parts, so a higher price, but never cheaper to buy can not guarantee the quality of the toothed belt, or if it will cause breakage big loss.
(2) installation problems with timing gear generally requires the use of special tools, and the operation is more complex. If disassembly is not standardized, it is easy to make the teeth with internal cracks, or the appearance of the upper and lower parts of the tooth with the other flat is not a case of early rupture causing tooth belt.
(3) tensioner or pump damage are generally required when the toothed belt tensioner tensioner and guide through the cooling water pumps are mostly driven by the timing gear belt, tensioner or pump Francais KESS V2 operation if the seizure has not been timely replacement, it will cause severe wear toothed belt, and even sudden rupture.
(4) subject to corrosion of oil and other liquids toothed belt is rubber parts, lubricants and other liquids after contact, can cause corrosion and premature failure.
(5) improper use of vehicles starting or accelerating too fast, timing toothed belt tension due to the sudden emergence of transient elongation, or even rupture. For example, when the vehicle is stuck car, if a fierce slam the accelerator pedal and clutch pedal loose ways to make cars out of the crater, toothed belt may break.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Monday, October 13, 2014
Chery acceleration engine running sluggish Cause Solution
Symptom: during acceleration, the engine speed may not be a corresponding increase, but dysfunctional, or even stall. The car had cleaned the throttle body, replace the spark plug, the fault persists.
Check Analysis: Taking of fault code display: 1, No. 34, the engine ECU wiring circuit. 2, battery failure. By Circuit that No. 34 is the main ground wire engine ECU, the No. 35 for the engine ECU 12V power inputs, so the preliminary digimaster 3 update view that the existence of the engine ECU power lines bad place. So first check the main ground wire No. 34, No. 35 power supply fuse and the engine ECU main relay, found its contacts can occasionally hear the voice shaking off the engine ECU main relay. Then open the ECU main relay found to have signs of damp, contact ablation. After replacing the main relay test, although improved but still poor acceleration. No fault code retrieval output, and each sensor injector is working properly, but found fault occurs when the fuel pressure is much lower than the standard pressure, it is concluded that the fuel supply system has a problem. Check the fuel filter, oil pressure regulator fuel pump, fuel pump failure found speed fluctuations, indicating that the fuel pump is not working properly, may be due to a problem with the fuel pump itself, it could be the fuel pump circuit failure. First check the fuel pump supply line and found the fuel pump relay output super mb star c3 voltage instability, then unplug the relay and open inspection, found that the coil has been damp, contact ablation.
Troubleshooting: After replacing the fuel pump relay test, the engine is running back to normal.
Review Summary: When PDI customers reflect long ago cleaned the engine, due to the cleaning of the engine and cause the engine ECU main relay and fuel pump relay internal moisture damage, which recommended that owners do not use water to clean the engine.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Check Analysis: Taking of fault code display: 1, No. 34, the engine ECU wiring circuit. 2, battery failure. By Circuit that No. 34 is the main ground wire engine ECU, the No. 35 for the engine ECU 12V power inputs, so the preliminary digimaster 3 update view that the existence of the engine ECU power lines bad place. So first check the main ground wire No. 34, No. 35 power supply fuse and the engine ECU main relay, found its contacts can occasionally hear the voice shaking off the engine ECU main relay. Then open the ECU main relay found to have signs of damp, contact ablation. After replacing the main relay test, although improved but still poor acceleration. No fault code retrieval output, and each sensor injector is working properly, but found fault occurs when the fuel pressure is much lower than the standard pressure, it is concluded that the fuel supply system has a problem. Check the fuel filter, oil pressure regulator fuel pump, fuel pump failure found speed fluctuations, indicating that the fuel pump is not working properly, may be due to a problem with the fuel pump itself, it could be the fuel pump circuit failure. First check the fuel pump supply line and found the fuel pump relay output super mb star c3 voltage instability, then unplug the relay and open inspection, found that the coil has been damp, contact ablation.
Troubleshooting: After replacing the fuel pump relay test, the engine is running back to normal.
Review Summary: When PDI customers reflect long ago cleaned the engine, due to the cleaning of the engine and cause the engine ECU main relay and fuel pump relay internal moisture damage, which recommended that owners do not use water to clean the engine.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Sunday, October 12, 2014
Polo 1.4L engine flameout normal driving the car does not start
Symptom: a 2003 factory Polo 1.4L sedan, suddenly unable to accelerate normal driving, the engine stalled and then did not start.
Check Analysis: rescue personnel arrived at the scene after starting the engine test, the engine smooth start, but found EPC lights on the dashboard lights. Understand that the car two days ago because of EPC lights, and replace the intake manifold super mb star c3 absolute pressure sensor. Remove the intake manifold absolute pressure sensor inspection also found no sludge and limb things like quality, so the two days before the change over from the old sensor cleaned and loaded on to clear the fault code, after starting the engine light is no longer found in EPC lit, test also everything is normal, then believed to be caused by poor quality of the new pieces of crystal. But after a day and a call to the owner, and air conditioning systems without anti fault code storage. Analysis guide the car and can not reflect accelerated engine flameout can not start the machine again. After the car towed back to the factory connection failure detector test, also show the intake manifold absolute pressure sensor failure, after clearing the fault code test, the engine has returned to normal. PCV valve is sometimes suspected of being a bad job, but because of the crankcase ventilation is not very good split, so decided to carry out regular checks. After inspection, petrol pressure, spark plugs, ignition coils, throttle, vacuum tube so normal. Road test on the car over 0.5h, the fault does not reproduce. The relevant lines and electrical components were checked and found particularly hot pump relay.
To determine the cause of the malfunction, continue to road test the car 5 km, heat pump renault diagnostic tool relay, it seems not the relay itself, check the fuel pump and lines, the line properly, it seems the fuel pump may be a problem, remove the check the fuel pump, filter found below a layer of dirt has been blocked.
The original fuel pump is overworked, causing the pump relay heat, eventually disconnected, when the car cool while the relay is to resume normal work, the car can work properly. Since the fuel system pressure is not enough, resulting in a sudden thinning the mixture, so the engine electronic control unit stores the camp on the intake manifold absolute pressure sensor failure fault code, and lit the EPC lights.
Remedy: Replace the fuel pump.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
Check Analysis: rescue personnel arrived at the scene after starting the engine test, the engine smooth start, but found EPC lights on the dashboard lights. Understand that the car two days ago because of EPC lights, and replace the intake manifold super mb star c3 absolute pressure sensor. Remove the intake manifold absolute pressure sensor inspection also found no sludge and limb things like quality, so the two days before the change over from the old sensor cleaned and loaded on to clear the fault code, after starting the engine light is no longer found in EPC lit, test also everything is normal, then believed to be caused by poor quality of the new pieces of crystal. But after a day and a call to the owner, and air conditioning systems without anti fault code storage. Analysis guide the car and can not reflect accelerated engine flameout can not start the machine again. After the car towed back to the factory connection failure detector test, also show the intake manifold absolute pressure sensor failure, after clearing the fault code test, the engine has returned to normal. PCV valve is sometimes suspected of being a bad job, but because of the crankcase ventilation is not very good split, so decided to carry out regular checks. After inspection, petrol pressure, spark plugs, ignition coils, throttle, vacuum tube so normal. Road test on the car over 0.5h, the fault does not reproduce. The relevant lines and electrical components were checked and found particularly hot pump relay.
To determine the cause of the malfunction, continue to road test the car 5 km, heat pump renault diagnostic tool relay, it seems not the relay itself, check the fuel pump and lines, the line properly, it seems the fuel pump may be a problem, remove the check the fuel pump, filter found below a layer of dirt has been blocked.
The original fuel pump is overworked, causing the pump relay heat, eventually disconnected, when the car cool while the relay is to resume normal work, the car can work properly. Since the fuel system pressure is not enough, resulting in a sudden thinning the mixture, so the engine electronic control unit stores the camp on the intake manifold absolute pressure sensor failure fault code, and lit the EPC lights.
Remedy: Replace the fuel pump.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
Friday, October 10, 2014
Thursday, October 9, 2014
Toyota adventurer can no longer start after flameout
Production plant: Toyota Motor Corporation
License plate number: adventurer E-VCV10
Engine Grades: 3VZ-FE type
Year: 1992
Mileage: 77000km
Failure Symptoms: can not start the engine flameout.
Troubleshooting: the fact that the engine can not start from the basic checks begin. After basic checks, the results did not harvest. Remove the spark plug, the spark plug with a thin layer of the adhesive gasoline, like ignition systems. Are recognized when the installed vas 5054a lamp ignition spark timing light does blink, indicating that there is an ignition spark. So in the end there is no ignition spark it in the cylinder?
To confirm that there are no ignition spark inside the cylinder, the cylinder pressure conditions do simulation spark test, for which the central high voltage cable unplugged, the cable from the left and right cylinder head 10mm, 10mm air gap to do that to keep the spark test, the results of the spark is normal. Then pull each cylinder spark high voltage cable test results done in the air gap of 10mm only when there is no spark, but also "pop jack, black jack" sound leakage. Reduce the air gap, there sparks flying.
Remove the distributor cap and distributor rotor, where the side has come out of its hole burning due to leakage.
In order to track down the real cause of the failure, perform a variety of investigations. The results of high-voltage cables is high resistance value, the reference renault diagnostic tool value is generally a high voltage cable is 16kΩ / m, and this engine is the resistance value of the high voltage cable 30kΩ / m or more, some of which reach 32kΩ / m. After the secondary circuit resistance increased demands increased voltage ignition coil, resulting in insulation breakdown weaknesses leakage.
High voltage cable disconnection, high-voltage terminal of the ignition coil to the low-voltage terminal leakage, closed magnetic coils into open magnetic coil, without leakage to the outside, it is difficult to find.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
License plate number: adventurer E-VCV10
Engine Grades: 3VZ-FE type
Year: 1992
Mileage: 77000km
Failure Symptoms: can not start the engine flameout.
Troubleshooting: the fact that the engine can not start from the basic checks begin. After basic checks, the results did not harvest. Remove the spark plug, the spark plug with a thin layer of the adhesive gasoline, like ignition systems. Are recognized when the installed vas 5054a lamp ignition spark timing light does blink, indicating that there is an ignition spark. So in the end there is no ignition spark it in the cylinder?
To confirm that there are no ignition spark inside the cylinder, the cylinder pressure conditions do simulation spark test, for which the central high voltage cable unplugged, the cable from the left and right cylinder head 10mm, 10mm air gap to do that to keep the spark test, the results of the spark is normal. Then pull each cylinder spark high voltage cable test results done in the air gap of 10mm only when there is no spark, but also "pop jack, black jack" sound leakage. Reduce the air gap, there sparks flying.
Remove the distributor cap and distributor rotor, where the side has come out of its hole burning due to leakage.
In order to track down the real cause of the failure, perform a variety of investigations. The results of high-voltage cables is high resistance value, the reference renault diagnostic tool value is generally a high voltage cable is 16kΩ / m, and this engine is the resistance value of the high voltage cable 30kΩ / m or more, some of which reach 32kΩ / m. After the secondary circuit resistance increased demands increased voltage ignition coil, resulting in insulation breakdown weaknesses leakage.
High voltage cable disconnection, high-voltage terminal of the ignition coil to the low-voltage terminal leakage, closed magnetic coils into open magnetic coil, without leakage to the outside, it is difficult to find.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
Chery cars vain Failure Analysis and Troubleshooting
Symptom: Starter can work, but vain car. The car was in the car repair shop, Chery single point EFI.
Check: First, starter able to work without a car, you can follow the car a prerequisite to maintenance. The car's gasoline prerequisite is that a cylinder pressure enough; two, ignition and ignition timing normal; three-cylinder mixture concentration standards. After investigation, the car enough cylinder pressure, fuel injectors in starting work and will fuel injection, while sub-cylinder line does not flash. The reason is not vain car flash. So check the cause can not flash. Car Boshi WU-2000B obtain obd2 code scanner fault codes. There are three historical fault codes, namely: the battery voltage is too low, the fuel injector is not working, speed sensor failure. But after clearing the fault code system normal, no fault, and car components Boshi WU-2000B for action test, sub-cylinder line can flash, action testing other components are normal; That electronic control unit and the system is normal . The car should be to regroup.
The car vain because the sub-cylinder car line does not flash. The ignition control system for the electronic control unit (commonly known as the computer board), and then check the car Boshi WU-2000B no fault codes; component actuation test can flash over, it seems normal. Therefore can not blindly break a dead end. Technically trouble, leaving a shortfall of a link, that inquiry. Thus, the original repair shop maintenance personnel recruited, this car was originally entered the repair shop, and when changing the gearbox casing, the speed sensor wire dial off, get a new sensor. We also focus on checking the speed sensor. The sensor for electromagnetic induction sensors. When the search operation by the starter, there is an induced voltage. No fault code. When dialing this speed sensor, when the re-start, the fuel injection nozzle is not. Therefore, the speed sensor can determine the work. This also in trouble. Is the computer board is damaged. The car is moved Digimaster III into the factory to the computer board should not be damaged. So we carefully analyzed, Chery single point EFI works. The system is Marelli produced I, A, W, 6F single-point fuel injection system. The system has no camshaft sensor, only one speed sensor, the sensor is fixed to the front of the transmission housing. Provide speed signal for ECU, while providing sub-cylinder signal. Because of the hands-free oscilloscope, waveform failed to see the speed sensor. Thus, the replacement of a speed sensor, and sure enough, that is the car moving along. At this point the problem is solved.
Analysis of reasons: a single point Marelli EFI system. Provided by the speed sensor and the speed signal while the signal point of the sub-cylinder top dead center, due to poor sensor performance, to provide a speed signal (the signal estimated to have bad), and therefore, fuel injectors to work, the system is no fault code. But it can not determine the dead, the ECU does not cause ignition, but not the car. A gotcha shoddy sensor.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Wednesday, October 8, 2014
Creader VII+ (CRP123) and Creader VIII (CRP129) Update and Registration Instruction
Step 1: visit
http://mycar.x431.com/pad/landingPageIndexCrv.action and click
icon "Update Tool Download".
Step 2: Download and install "Launch Creader Update Tool ",
after installation is complete, run it.
Step 3: in the following picture, select Language (English, Chinese,
French and Spanish available) and input product Serial Number
(the serial number is in the back of Creader VII+ /Creader VIII)
Step 4: click "Update" to enter the registration page, input Email
and Register Code, click "Submit".
http://mycar.x431.com/pad/landingPageIndexCrv.action and click
icon "Update Tool Download".
Step 2: Download and install "Launch Creader Update Tool ",
after installation is complete, run it.
Step 3: in the following picture, select Language (English, Chinese,
French and Spanish available) and input product Serial Number
(the serial number is in the back of Creader VII+ /Creader VIII)
Step 4: click "Update" to enter the registration page, input Email
and Register Code, click "Submit".
(Note: if you need Register Code, please refer to step 5 to step 8; if
you already have Register Code, after submit, skip to step 9. )
Step 5: the register code can be found in the Creader VII+ /
Creader VIII, how to find? Connect one end of the USB cable to
Creader VII+ / Creader VIII, and another end to the computer.
Step 6: Wait until Launch Creader enter the main menu, then Move
the mouse pointer to the "Help" icon, finally press the "OK button.
Step 7: select "Tool Information", then press button "OK".
Step 8: the register code shown below is the one needed to enter in
the step 4.
(Back to step 4 to input register code and continue)
Step 9: insert TF card into TF card reader, then insert the TF card
into the computer.
Step 10: restart the "Launch Creader Update Tool ", select the file
you need or click "All", then click "Download" to start the download.
Step 11: After complete download, take out TF card from TF card reader and insert it into the slot of Creader VII+ / Creader VIII, then
supply power for Creader VII+ / Creader VIII by the USB cable (one
end of the USB cable connect to Creader VII+ / Creader VIII and
another end to the computer) or by the vehicle diagnostic socket
(connect the OBDII connector of Creader VII+ / Creader VIII to
vehicle diagnostic socket ), after the Creader starts, it popup a
window prompting " System Upgrade- Sure Upgrade?", select "
OK" to upgrade.
Step 12: update complete!
Tuesday, October 7, 2014
Buick underpowered when driving and poor acceleration
Symptom: a Shanghai Buick sedan (fitted with electronically controlled V6 engine), when traveling always underpowered and poor acceleration. Check the engine and found serious shake when idling, the intake manifold has tempered the phenomenon hard acceleration.
Troubleshooting: First, clean the air filter, spark plugs and fuel filter replacement, but the fault obd2 code scanner remains. And the use of cleaner fuel injection system, with special equipment delivered to the intake manifold, when starting the engine, to the point of self-cleaning spray device, but did not work, remove the injector, using special equipment cleaning effect is not obvious. Then remove the air cleaner, hand to block the air intake throttle valve to reduce the filter inlet area of the main channel, the mixed gas concentration, the result becomes stable idling, acceleration no tempering, indicating that the fault direct cause is too lean mixture. So to test the fuel pressure, the fuel pressure gauge connected with a tee fitting the fuel pressure regulator and fuel injectors oil on the road between, start the engine and change the speed, the measured pressure values within the normal range. Later, they consider air flow mb star software sensor is an important factor affecting air-fuel ratio, they unplug the test. After unplug able to stabilize the engine idling, acceleration is also improved. Then remove it from the throttle body air flow sensor checks hotline is not broken, but there is fouling the hotline. Use spray cleaner directly after cleaning refitted test, troubleshooting.
Analysis of the causes, since long-term driving the car, did not carry out maintenance on the air flow sensor dust removal, resulting in the failure.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Troubleshooting: First, clean the air filter, spark plugs and fuel filter replacement, but the fault obd2 code scanner remains. And the use of cleaner fuel injection system, with special equipment delivered to the intake manifold, when starting the engine, to the point of self-cleaning spray device, but did not work, remove the injector, using special equipment cleaning effect is not obvious. Then remove the air cleaner, hand to block the air intake throttle valve to reduce the filter inlet area of the main channel, the mixed gas concentration, the result becomes stable idling, acceleration no tempering, indicating that the fault direct cause is too lean mixture. So to test the fuel pressure, the fuel pressure gauge connected with a tee fitting the fuel pressure regulator and fuel injectors oil on the road between, start the engine and change the speed, the measured pressure values within the normal range. Later, they consider air flow mb star software sensor is an important factor affecting air-fuel ratio, they unplug the test. After unplug able to stabilize the engine idling, acceleration is also improved. Then remove it from the throttle body air flow sensor checks hotline is not broken, but there is fouling the hotline. Use spray cleaner directly after cleaning refitted test, troubleshooting.
Analysis of the causes, since long-term driving the car, did not carry out maintenance on the air flow sensor dust removal, resulting in the failure.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Monday, October 6, 2014
Honda Accord car unable to start troubleshooting after turn off
Symptom: a 94 Accord sedan engine F22B2, come on do not accelerate the phenomenon in a moving way, then slowly turn off, and then not start.
Troubleshooting: After the timing belt, fuel pump, spark plugs and replace one fault persists. Later, for a computer and an engine throttle assembly, fault or not excluded.
This car to conduct a comprehensive inspection system fuel pressure is 280kPa (without vacuum), the ignition timing is correct. Ignition coil, primary resistance of 0.6Ω, secondary to 145kΩ; remove the test well water temperature sensor, cylinder pressure car key programmer normal. Parameters on the above parameters and maintenance manual is basically the same. All the components are all mounted on the car for starting the test, beginning when starting the car chug a few times, has a car meant. Remove the four spark plugs again and found that they were all drowned gasoline. They do with the wind dry flashover test, sparks normal. This car has oil, electric, gas, why not him? The car is equipped with three-way catalytic converter, is not because it is damage caused by this failure? So this device removed. Remove the four spark plug temporarily installed on the car, then put four injector electrode removed. Handlebar accelerator pedal in the end, the throttle fully open, start the engine several times, replace the spark plugs, fuel injectors electrodes. Re-start, the car smoothly, operating normally. Finally, for a three-way catalytic converter and put down for the computer, fuel pump, a throttle mounted on the carriage. After starting the car in normal operation, troubleshooting.
Maintenance Summary: The car does not fire because the three-way catalytic converter is usually BMW ICOM used because of poor fuel quality and not pay attention to the car wash when the water is injected into the three-way catalytic converter, causing it to prematurely damage the exhaust poor. Before starting the engine, remove the spark plug all, four electrodes removed injectors, the throttle fully open, the purpose is to make the cylinder unburned gasoline previously discharged as soon as possible, so that the spark plugs will not continue to be drowned.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
Troubleshooting: After the timing belt, fuel pump, spark plugs and replace one fault persists. Later, for a computer and an engine throttle assembly, fault or not excluded.
This car to conduct a comprehensive inspection system fuel pressure is 280kPa (without vacuum), the ignition timing is correct. Ignition coil, primary resistance of 0.6Ω, secondary to 145kΩ; remove the test well water temperature sensor, cylinder pressure car key programmer normal. Parameters on the above parameters and maintenance manual is basically the same. All the components are all mounted on the car for starting the test, beginning when starting the car chug a few times, has a car meant. Remove the four spark plugs again and found that they were all drowned gasoline. They do with the wind dry flashover test, sparks normal. This car has oil, electric, gas, why not him? The car is equipped with three-way catalytic converter, is not because it is damage caused by this failure? So this device removed. Remove the four spark plug temporarily installed on the car, then put four injector electrode removed. Handlebar accelerator pedal in the end, the throttle fully open, start the engine several times, replace the spark plugs, fuel injectors electrodes. Re-start, the car smoothly, operating normally. Finally, for a three-way catalytic converter and put down for the computer, fuel pump, a throttle mounted on the carriage. After starting the car in normal operation, troubleshooting.
Maintenance Summary: The car does not fire because the three-way catalytic converter is usually BMW ICOM used because of poor fuel quality and not pay attention to the car wash when the water is injected into the three-way catalytic converter, causing it to prematurely damage the exhaust poor. Before starting the engine, remove the spark plug all, four electrodes removed injectors, the throttle fully open, the purpose is to make the cylinder unburned gasoline previously discharged as soon as possible, so that the spark plugs will not continue to be drowned.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
Digimaster3 Upgrade Instruction Steps
Upgrade instruction: our digimaster3 support upgrate online
Step 1, plug the power supply to digimaster3 and insert the
network cable into the LAN interface of digimaster3.
Step 2, select “Management”
Step 3, select “Update”
Step 4, select “Software Upgrade”
Step 5, the machine is upgrading
Touch screen calibration:
When the touch screen shows not correctly, you can calibrate
it, please refer to the following instructions.
Step 1, select “Stylus Proofreading”
Step 2: use touch pen point at the center of cursor
Step 1, plug the power supply to digimaster3 and insert the
network cable into the LAN interface of digimaster3.
Step 2, select “Management”
Step 3, select “Update”
Step 4, select “Software Upgrade”
Step 5, the machine is upgrading
Touch screen calibration:
When the touch screen shows not correctly, you can calibrate
it, please refer to the following instructions.
Step 1, select “Stylus Proofreading”
Step 2: use touch pen point at the center of cursor
Sunday, October 5, 2014
Beijing BJ2020S type sport utility vehicle starter operation weakness
After BJ2020S a Beijing-road vehicles, the starter is damaged, replace the same model (QD321 type) of the starter, but the re-start starter when loading operation weakness.
Troubleshooting:
(A) Failure Cause Analysis
Replacing the battery is new, the starting power heavy duty diagnostic tool circuit has also been confirmed that it is normal, then the quality is just replacing the new starter has a problem? Needs to be checked.
(2) Troubleshooting Methods
Remove the front cover of the dust jacket starter, starter solenoid when restarting found completely pull the switch, and see a strong spark at the fork. Judgment based on experience, should be the starter failure caused by poor grounding.
To verify this judgment, with a thicker wire overlap between the starter housing and the engine block, when the re-start, fault disappears, indicating that indeed a bad starter Ground.
Remove the starter careful examination, found in the starter drive and flywheel housing cover only parts of the installation mouth thick black paint, which is the cause of bad starter Ground lies.
(3) failure treatment measures
Paint the Department cleaned, re-loading start, starter normal operation, troubleshooting.
Failure Analysis: When the starter factory, outside coated with a layer of protective VAG K+CAN V4.8 paint to prevent rust. When replacing the starter while ignoring the leading end of the starter portion of the cleaning, resulting in a poor and can not start the starter to ground fault.
Tip this example: In the car repair process, we should pay attention to the new replacement parts for inspection and cleaning, but also for testing, if necessary, to ensure good new parts replacement, to avoid failure or left hidden faults after loading.
http://www.uobd2.net/wholesale/car-diagnostic-tool/
Troubleshooting:
(A) Failure Cause Analysis
Replacing the battery is new, the starting power heavy duty diagnostic tool circuit has also been confirmed that it is normal, then the quality is just replacing the new starter has a problem? Needs to be checked.
(2) Troubleshooting Methods
Remove the front cover of the dust jacket starter, starter solenoid when restarting found completely pull the switch, and see a strong spark at the fork. Judgment based on experience, should be the starter failure caused by poor grounding.
To verify this judgment, with a thicker wire overlap between the starter housing and the engine block, when the re-start, fault disappears, indicating that indeed a bad starter Ground.
Remove the starter careful examination, found in the starter drive and flywheel housing cover only parts of the installation mouth thick black paint, which is the cause of bad starter Ground lies.
(3) failure treatment measures
Paint the Department cleaned, re-loading start, starter normal operation, troubleshooting.
Failure Analysis: When the starter factory, outside coated with a layer of protective VAG K+CAN V4.8 paint to prevent rust. When replacing the starter while ignoring the leading end of the starter portion of the cleaning, resulting in a poor and can not start the starter to ground fault.
Tip this example: In the car repair process, we should pay attention to the new replacement parts for inspection and cleaning, but also for testing, if necessary, to ensure good new parts replacement, to avoid failure or left hidden faults after loading.
http://www.uobd2.net/wholesale/car-diagnostic-tool/
Friday, October 3, 2014
Corse (Corsica) car engine cold start problems
Symptom: cold start problems, unstable idling after starting, idling normal hot car.
Troubleshooting: This phenomenon preliminary judgment is affected idle speed stepper motor failure, the need for dismantling. Turn the ignition switch, remove the stepper heavy duty diagnostic tool motor, found the head cone valve and seat stepper motor idling intake clogged with oil, the impact of idling condition into the air, the oil washed with dry cleaners, installed good stepper motor, start the engine, smooth idling, failure to eliminate.
Failure Analysis: This car idle condition according to the computer by the engine battery voltage, coolant temperature, engine load and engine speed to calculate the optimum idle speed stepper motor position and instructs the cone valve with a small amplitude, or the stepper motor forward or back change idle inlet section to control the engine idle smooth operation.
During cold start, the coolant temperature is low, the engine computer instruction fuel injection pulse width is increased, while the idle speed stepper motor command conical valve opening increases, the high idle speed of the engine operation, the temperature was gradually car key replacement increased as the cooling liquid, spray oil width decreases, idle speed stepper motor conical valve opening is reduced accordingly, to keep the engine at low idle.
Such failure is due to the oil cone valve and valve seat accumulation, reducing the adjustable range cone valve, resulting in cold start, the intake air is reduced accordingly, and the emergence cold start problems and not idling stable.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Troubleshooting: This phenomenon preliminary judgment is affected idle speed stepper motor failure, the need for dismantling. Turn the ignition switch, remove the stepper heavy duty diagnostic tool motor, found the head cone valve and seat stepper motor idling intake clogged with oil, the impact of idling condition into the air, the oil washed with dry cleaners, installed good stepper motor, start the engine, smooth idling, failure to eliminate.
Failure Analysis: This car idle condition according to the computer by the engine battery voltage, coolant temperature, engine load and engine speed to calculate the optimum idle speed stepper motor position and instructs the cone valve with a small amplitude, or the stepper motor forward or back change idle inlet section to control the engine idle smooth operation.
During cold start, the coolant temperature is low, the engine computer instruction fuel injection pulse width is increased, while the idle speed stepper motor command conical valve opening increases, the high idle speed of the engine operation, the temperature was gradually car key replacement increased as the cooling liquid, spray oil width decreases, idle speed stepper motor conical valve opening is reduced accordingly, to keep the engine at low idle.
Such failure is due to the oil cone valve and valve seat accumulation, reducing the adjustable range cone valve, resulting in cold start, the intake air is reduced accordingly, and the emergence cold start problems and not idling stable.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Thursday, October 2, 2014
Toyota small passenger charging indicator light not be quenched
Symptom: a Toyota passenger cars, closed switches switch, charging indicator light lights; After starting, charging indicator light reddish; increase engine speed, charging indicator light brightness actually strengthened.
Failure Analysis and Maintenance: Toyota minibus double set of double-stage vibration obd2 scan tool regulator, a voltage regulator for the engine group, a group of charging indicator light relay. When the switch is closed switches, battery current through the charging indicator light, charging indicator light relay normally closed contact and grounding, charging indicator light, shiny; after starting, charging indicator light reddish, indicating that the relay is normally closed contacts break open, then it indicates that the generator has power, in which linear voltage-controlled charging indicator light relay coil is energized and suck the next boom contact, then the generator output current through the charging indicator light, festival and take the pressure coil iron, in charging indicator light circuit in series with the coil due to an increase of loop resistance, so the charging indicator turns reddish-like, is a normal state. When the speed increases, the generator voltage increases, broken appliances normally open contacts are closed, the generator output current through the charging indicator light, the relay is closed normally open contacts and went back to the generator output terminal ends of the same potential without voltage, so the charging indicator light should go off. The charging indicator light not only do not go out, but the brightness increases; measured with a multimeter DC voltage profile generator vcs scanner voltage, the results voltages up to 14.5V, indicating that the generator is working properly, the cause is charging indicator light relay normally open contact in the closed state under the conductive bad, or normally closed contacts connected to the output of the generator welding head off. After examination, the connection joints in good condition; check charging indicator light relay normally open contacts, found that the contact oxidation, poor conductivity.
After sanding the contact charging light goes out, troubleshooting.
http://www.uobd2.net/wholesale/car-diagnostic-tool/
Failure Analysis and Maintenance: Toyota minibus double set of double-stage vibration obd2 scan tool regulator, a voltage regulator for the engine group, a group of charging indicator light relay. When the switch is closed switches, battery current through the charging indicator light, charging indicator light relay normally closed contact and grounding, charging indicator light, shiny; after starting, charging indicator light reddish, indicating that the relay is normally closed contacts break open, then it indicates that the generator has power, in which linear voltage-controlled charging indicator light relay coil is energized and suck the next boom contact, then the generator output current through the charging indicator light, festival and take the pressure coil iron, in charging indicator light circuit in series with the coil due to an increase of loop resistance, so the charging indicator turns reddish-like, is a normal state. When the speed increases, the generator voltage increases, broken appliances normally open contacts are closed, the generator output current through the charging indicator light, the relay is closed normally open contacts and went back to the generator output terminal ends of the same potential without voltage, so the charging indicator light should go off. The charging indicator light not only do not go out, but the brightness increases; measured with a multimeter DC voltage profile generator vcs scanner voltage, the results voltages up to 14.5V, indicating that the generator is working properly, the cause is charging indicator light relay normally open contact in the closed state under the conductive bad, or normally closed contacts connected to the output of the generator welding head off. After examination, the connection joints in good condition; check charging indicator light relay normally open contacts, found that the contact oxidation, poor conductivity.
After sanding the contact charging light goes out, troubleshooting.
http://www.uobd2.net/wholesale/car-diagnostic-tool/
Wednesday, October 1, 2014
Audi A6 2.4 sedan is sometimes difficult to start
A super-mileage 230,000 km, equipped with BDW engine, matching 01J-type transmission 2007 Audi A6 2.4 sedan. Users reflect: sometimes difficult to start the car.
Check Analysis: test maintenance personnel discovered that the car was at the time of starting the engine shake, similar problems caused by dirty throttle. Open the oil cap and found no abnormalities. Connection failure diagnostic engine fault code read, display mb star c3 diagnostic tool camshaft position sensor failure, active static. When the engine is idling, found that work is relatively stable. At this point to read the throttle opening, no obvious abnormalities. Read 15 and 16 sets of data, found that 4,5 and 6-cylinder are different degrees of fire, and 1, 2 and 3 cylinder misfire is 0.
Analysis, 4, 5 and 6 cylinder are fire, indicating the left side of the cylinder into the gas shortage could be camshaft phase adjustment function failure.
Troubleshooting: Replace camshaft adjustment solenoid valve troubleshooting.
Additional Description: This car is not a line fault solenoid valve, if so, the system will give the circuit open / short fault codes.
http://www.uobd2.net/wholesale/obd2-code-scanner/
Check Analysis: test maintenance personnel discovered that the car was at the time of starting the engine shake, similar problems caused by dirty throttle. Open the oil cap and found no abnormalities. Connection failure diagnostic engine fault code read, display mb star c3 diagnostic tool camshaft position sensor failure, active static. When the engine is idling, found that work is relatively stable. At this point to read the throttle opening, no obvious abnormalities. Read 15 and 16 sets of data, found that 4,5 and 6-cylinder are different degrees of fire, and 1, 2 and 3 cylinder misfire is 0.
Analysis, 4, 5 and 6 cylinder are fire, indicating the left side of the cylinder into the gas shortage could be camshaft phase adjustment function failure.
Troubleshooting: Replace camshaft adjustment solenoid valve troubleshooting.
Additional Description: This car is not a line fault solenoid valve, if so, the system will give the circuit open / short fault codes.
http://www.uobd2.net/wholesale/obd2-code-scanner/
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