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Friday, August 29, 2014
Mercedes (C280) inability to accelerate overhaul
Symptom: a Mercedes-Benz C280 sedan paragraph 95, in the process of moving, accelerating weakness, close to full throttle, the speed can not exceed 3Okm / h, even when the high-speed failure rarely occurs, mainly after the stop, start, and then accelerate process and intermittent. Usually turn off the engine after the ignition switch is turned off, then turn the ignition switch, start the engine, the fault disappears, accelerate normal cars with twenty-three days failures will reproduce. This car had some manufacturers repeatedly checked and replaced the temperature sensor, crankshaft position Multidiag Pro sensor and oxygen sensor straight and other components, the failure was not ruled out.
Maintenance process: using red box SCANNER diagnostic check, enter the OBD-Ⅱ diagnostic mode, first read the engine system fault code is displayed as PO000, no fault codes; then enter the numerical analysis, start the vehicle road test, driving all normal at the beginning of and then brake, parking, hard acceleration times of trial and error approach to make a failure, road test more than one hour later, the failure to reproduce the phenomenon, the speed throttle in the end is still below 3OKm / h, and then read the red box SCANNER no fault is still P0000 fault, the analysis of the value found two clues:
(1) when the normal driving, i.e. after starting IGNADV ignition advance angle is 5.5 °, when the engine is 300Or / min to 38 °, normally a strong acceleration; When a fault occurs, idling, acceleration of ignition advance angle showed a negative angle, and sometimes as -6 °, sometimes -2 °, but as long as the ignition switch off, turn off the engine, and then start the ignition advance angle back to 5.5 °, accelerate to normal.
(2) during normal driving, the fuel control system FUEL SYS normal value changes, cold car for OL (open-loop control), hot car for CL (closed loop control), hard acceleration display OL DRV, which is a positive instruction is executed by the engine automotive diagnostic tool computer normal program concentrated injection, when the failure occurs, hard acceleration weakness, the display OL FLT, which is the meaning of the fuel control system damage.
Impact of delayed ignition timing signal mainly KS knock, ECT cooling water temperature, IAT intake air temperature, CKP crankshaft position sensor signal. After testing these signals were normal, but which does not make a bad signal the engine control computer after normal driving twenty-three days before the implementation of the standby function, so we must consider the possibility of damage to the computer. Originally open-loop control, closed-loop control, gear reduction oil, gear oil and rapid acceleration off-enriched fuel trim, etc. These models are controlled by the engine computer. Symptom reflect a sudden change in motion car fuel correction mode, a sudden change in the ignition advance angle, indicating that the engine computer has poor control. This failure to completely rule out the replacement engine control computer.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
Maintenance process: using red box SCANNER diagnostic check, enter the OBD-Ⅱ diagnostic mode, first read the engine system fault code is displayed as PO000, no fault codes; then enter the numerical analysis, start the vehicle road test, driving all normal at the beginning of and then brake, parking, hard acceleration times of trial and error approach to make a failure, road test more than one hour later, the failure to reproduce the phenomenon, the speed throttle in the end is still below 3OKm / h, and then read the red box SCANNER no fault is still P0000 fault, the analysis of the value found two clues:
(1) when the normal driving, i.e. after starting IGNADV ignition advance angle is 5.5 °, when the engine is 300Or / min to 38 °, normally a strong acceleration; When a fault occurs, idling, acceleration of ignition advance angle showed a negative angle, and sometimes as -6 °, sometimes -2 °, but as long as the ignition switch off, turn off the engine, and then start the ignition advance angle back to 5.5 °, accelerate to normal.
(2) during normal driving, the fuel control system FUEL SYS normal value changes, cold car for OL (open-loop control), hot car for CL (closed loop control), hard acceleration display OL DRV, which is a positive instruction is executed by the engine automotive diagnostic tool computer normal program concentrated injection, when the failure occurs, hard acceleration weakness, the display OL FLT, which is the meaning of the fuel control system damage.
Impact of delayed ignition timing signal mainly KS knock, ECT cooling water temperature, IAT intake air temperature, CKP crankshaft position sensor signal. After testing these signals were normal, but which does not make a bad signal the engine control computer after normal driving twenty-three days before the implementation of the standby function, so we must consider the possibility of damage to the computer. Originally open-loop control, closed-loop control, gear reduction oil, gear oil and rapid acceleration off-enriched fuel trim, etc. These models are controlled by the engine computer. Symptom reflect a sudden change in motion car fuel correction mode, a sudden change in the ignition advance angle, indicating that the engine computer has poor control. This failure to completely rule out the replacement engine control computer.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
Thursday, August 28, 2014
Audi A6 body vibration at low speed cornering
An ultra 210,000 km mileage Audi A6 4.2L sedan. Users reflect: the car at low speed cornering body vibration.
Troubleshooting:
(A) reflect this customer to our station, the vehicle body vibration at low speed cornering. Maintenance personnel found the car after the test at the speed of about 30km / h cornering, rear KESS V2 continuous vibration (dynamic jump). I stand with VAS5052 check this car, no relevant fault code, read data stream properly.
(2) maintenance personnel through the rear axle differential fault analysis, after replacing some relief in the cool car, hot car remains the same, no troubleshooting.
(3) Check the drive shaft and found no abnormalities.
(4) Try replacing the Torsen differential, test troubleshooting, open black oil have found Torsen differential ablation phenomenon.
Troubleshooting: Replace differential and differential oil.
Failure Summary: not encountered such a fault before, nor have other cases and technical follow, to go one step overhaul detour. That seems more from the principles and theoretical analysis, troubleshooting good.
http://www.uobdii.com/wholesale/original-mercedes-benz-nec-pro57.html
Troubleshooting:
(A) reflect this customer to our station, the vehicle body vibration at low speed cornering. Maintenance personnel found the car after the test at the speed of about 30km / h cornering, rear KESS V2 continuous vibration (dynamic jump). I stand with VAS5052 check this car, no relevant fault code, read data stream properly.
(2) maintenance personnel through the rear axle differential fault analysis, after replacing some relief in the cool car, hot car remains the same, no troubleshooting.
(3) Check the drive shaft and found no abnormalities.
(4) Try replacing the Torsen differential, test troubleshooting, open black oil have found Torsen differential ablation phenomenon.
Troubleshooting: Replace differential and differential oil.
Failure Summary: not encountered such a fault before, nor have other cases and technical follow, to go one step overhaul detour. That seems more from the principles and theoretical analysis, troubleshooting good.
http://www.uobdii.com/wholesale/original-mercedes-benz-nec-pro57.html
Wednesday, August 27, 2014
Tuesday, August 26, 2014
Toyota Corolla car battery power loss
A mileage of about 140,000 km, assembly 2ZR-FE engine of the 2008 Toyota Corolla sedan. Users reflect: the car three days there will be no difficulty in starting the phenomenon is caused by battery power loss. The failure phenomenon has occurred many times.
Failure Analysis: First, the battery using battery tester for testing and found that the battery voltage is low, but the Digiprog 3 test results show good battery needs to be charged, then charge the battery first, to be filled with the test again after placing 2h, show good battery voltage is 12. 67V. Next, the car's parasitic current testing, and found the parasitic current is 122. 6mA, significantly higher than the standard value 30 ~ 50mA, so the car's electrical system description somewhere parasitic current is too big phenomenon. Later communication with the user that the car had installed GPS-ONE anti-theft system), suspected to be caused by parasitic currents Refitting the phenomenon is too large, then the GPS-ONE anti-theft system) v After the addition, the parasitic current is detected again, the results found at this parasitic current is about 6. 61 mA, described at this ialtest link scanner parasitic current is very standard. So you can determine the parasitic current is too large is mainly caused due to electrical conversion.
Troubleshooting: After the installation of electrical equipment removal, troubleshooting.
Failure Comments: After a user to install electrical leakage caused by battery power loss caused by one of the major reasons for the failure occurred demolition can be avoided, but we can not consider the basis of the anti-theft system without removing the GPS on, reduce or avoid excessive current generation do? I believe the answer is yes.
http://autelmaxidasds708sale.blogspot.com/
Failure Analysis: First, the battery using battery tester for testing and found that the battery voltage is low, but the Digiprog 3 test results show good battery needs to be charged, then charge the battery first, to be filled with the test again after placing 2h, show good battery voltage is 12. 67V. Next, the car's parasitic current testing, and found the parasitic current is 122. 6mA, significantly higher than the standard value 30 ~ 50mA, so the car's electrical system description somewhere parasitic current is too big phenomenon. Later communication with the user that the car had installed GPS-ONE anti-theft system), suspected to be caused by parasitic currents Refitting the phenomenon is too large, then the GPS-ONE anti-theft system) v After the addition, the parasitic current is detected again, the results found at this parasitic current is about 6. 61 mA, described at this ialtest link scanner parasitic current is very standard. So you can determine the parasitic current is too large is mainly caused due to electrical conversion.
Troubleshooting: After the installation of electrical equipment removal, troubleshooting.
Failure Comments: After a user to install electrical leakage caused by battery power loss caused by one of the major reasons for the failure occurred demolition can be avoided, but we can not consider the basis of the anti-theft system without removing the GPS on, reduce or avoid excessive current generation do? I believe the answer is yes.
http://autelmaxidasds708sale.blogspot.com/
Monday, August 25, 2014
Audi 2.0 engine idling trouble-free
Symptom: Audi five-cylinder 2.0 engine idle speed fluctuated, difficult to start, turn off for no reason. This is a mechanical one electronic hybrid control of jet engines, through a number of garages on the injection system and ignition system adjustments, cleaning is not effective.
Causes Check: systematic checks. First, measure the system's fuel pressure, after starting to reach 0.6MPa, 10min after flameout, the residual pressure of not less than 0.32MPa, description fuel pump, accumulator and pressure regulator properly, injectors not relief. According to the car idling with live fire, symptoms of suspected high-speed vacuum intake system leakage phenomenon, then remove nec pro57 benz key programmer the nozzle and nozzle holder, check the degree of aging of each apron, the replacement of some of the apron However, after loading the fault persists. Check the idle stabilization valve and its control circuit, plug valve drive current at idle stability to meet the requirements, it still does not use the new stable valve replacement. With the ignition system tester VAG1767 detect and adjust the ignition timing to BTDC10 °, found just transferred to idle speed 1000r / min or less on easy to turn off, and even when idling in 1000r / min or so, the distributor shall adjust at CO screw transferred very concentrated level, then the engine regularly breathe, feeling very much like a leak place. Carefully check the crankcase ventilation system piping and air conditioning throughout the vacuum lines were not unusual, when repair work basically an impasse, because nowhere has already started to be investigated. Are desperately around observation, found the car's air conditioning obd2 news compressor to adjust frame grazing traces Department has apparently been protruding obstacle collision. Further examination revealed compressor bracket has activities and traces of oil near tainted.
Originally, Audi five-cylinder 2.2L engine 2.OL and due to the special structure of the crankcase ventilation system, as long as a portion of the crankcase and external communication, such as adding oil cap or dipstick is unplugged, idling unstable or even turn off immediately, while this is due to hit the compressor, resulting in compressor screw holes fixed together along with cast-iron cylinder block knocked off, resulting in the crankcase and external communication.
http://digiprog-3.weebly.com/
Causes Check: systematic checks. First, measure the system's fuel pressure, after starting to reach 0.6MPa, 10min after flameout, the residual pressure of not less than 0.32MPa, description fuel pump, accumulator and pressure regulator properly, injectors not relief. According to the car idling with live fire, symptoms of suspected high-speed vacuum intake system leakage phenomenon, then remove nec pro57 benz key programmer the nozzle and nozzle holder, check the degree of aging of each apron, the replacement of some of the apron However, after loading the fault persists. Check the idle stabilization valve and its control circuit, plug valve drive current at idle stability to meet the requirements, it still does not use the new stable valve replacement. With the ignition system tester VAG1767 detect and adjust the ignition timing to BTDC10 °, found just transferred to idle speed 1000r / min or less on easy to turn off, and even when idling in 1000r / min or so, the distributor shall adjust at CO screw transferred very concentrated level, then the engine regularly breathe, feeling very much like a leak place. Carefully check the crankcase ventilation system piping and air conditioning throughout the vacuum lines were not unusual, when repair work basically an impasse, because nowhere has already started to be investigated. Are desperately around observation, found the car's air conditioning obd2 news compressor to adjust frame grazing traces Department has apparently been protruding obstacle collision. Further examination revealed compressor bracket has activities and traces of oil near tainted.
Originally, Audi five-cylinder 2.2L engine 2.OL and due to the special structure of the crankcase ventilation system, as long as a portion of the crankcase and external communication, such as adding oil cap or dipstick is unplugged, idling unstable or even turn off immediately, while this is due to hit the compressor, resulting in compressor screw holes fixed together along with cast-iron cylinder block knocked off, resulting in the crankcase and external communication.
http://digiprog-3.weebly.com/
Friday, August 22, 2014
Honda ASCORT valve leakage fault
Symptom: ASCORT a Honda sedan, engine idling instability occurs, the exhaust pipe when accelerating phenomenon of black smoke; park and start driving, the need to continuously stepped on the accelerator pedal to start a few minutes; however, as long as the speed exceeds 1000r / min, the situation will improve acceleration.
Maintenance process: after receiving the car, has been more repairman overhaul, almost the oil, the circuit all the parts and major components of the electronic control system are replaced with new parts, but the fault persists. Later, I found repeated test, after stopping at the start of the process, if the brake pedal to send a "hard", while other times the brake pedal is normal. This indicates a low degree of vacuum infineon tricore programmer after stopping intake manifold inside the start. Seize this phenomenon, first check to escape low vacuum manifold problems. First, in addition to clogging of the vacuum pressure sensor, all connected to a vacuum outside the vacuum channel, found not to be caused by leakage. Specially after passage of the EGR valve clogged, so the exhaust affect the intake manifold vacuum, but the fault is not eliminated.
Repeatedly thought, only valve leakage is the crux of the maximum possible, but the test results, the cylinder pressure of each cylinder to achieve 1.25kPa, it is generally believed that the possibility of a small valve leak. Nevertheless, remove the check-valve cylinder head, especially the intake valve. After removing the cylinder head, it was found that 1,2,3-cylinder have an intake valve leak. When these Autel DS708 valves in the valve seat rotate, rotate very smoothly. Careful observation, found that these valve heads are slightly deformed. After the replacement, the fault disappears.
Failure Analysis: engine has four valves per cylinder. Since 1,2,3-cylinder intake valve only a minor leak, so when the cylinder pressure is detected, if the operation of the starter is continuously driven crankshaft, cylinder pressure is not reduced. When the engine speed operation, valve leakage rate is very low, limited power down, the driver feel. At idle, the engine each cylinder charge less, due to valve leak, causing the engine running instability, but this time the engine per load. In the car started, the engine load increases, this time due to the low rate of movement of the valve, leak rate, so the engine has three cylinders due to poor working and power shortage.
http://www.uobdii.com/wholesale/original-mercedes-benz-nec-pro57.html
Maintenance process: after receiving the car, has been more repairman overhaul, almost the oil, the circuit all the parts and major components of the electronic control system are replaced with new parts, but the fault persists. Later, I found repeated test, after stopping at the start of the process, if the brake pedal to send a "hard", while other times the brake pedal is normal. This indicates a low degree of vacuum infineon tricore programmer after stopping intake manifold inside the start. Seize this phenomenon, first check to escape low vacuum manifold problems. First, in addition to clogging of the vacuum pressure sensor, all connected to a vacuum outside the vacuum channel, found not to be caused by leakage. Specially after passage of the EGR valve clogged, so the exhaust affect the intake manifold vacuum, but the fault is not eliminated.
Repeatedly thought, only valve leakage is the crux of the maximum possible, but the test results, the cylinder pressure of each cylinder to achieve 1.25kPa, it is generally believed that the possibility of a small valve leak. Nevertheless, remove the check-valve cylinder head, especially the intake valve. After removing the cylinder head, it was found that 1,2,3-cylinder have an intake valve leak. When these Autel DS708 valves in the valve seat rotate, rotate very smoothly. Careful observation, found that these valve heads are slightly deformed. After the replacement, the fault disappears.
Failure Analysis: engine has four valves per cylinder. Since 1,2,3-cylinder intake valve only a minor leak, so when the cylinder pressure is detected, if the operation of the starter is continuously driven crankshaft, cylinder pressure is not reduced. When the engine speed operation, valve leakage rate is very low, limited power down, the driver feel. At idle, the engine each cylinder charge less, due to valve leak, causing the engine running instability, but this time the engine per load. In the car started, the engine load increases, this time due to the low rate of movement of the valve, leak rate, so the engine has three cylinders due to poor working and power shortage.
http://www.uobdii.com/wholesale/original-mercedes-benz-nec-pro57.html
Thursday, August 21, 2014
Toyota Crown automatically turn off
Symptom: a Toyota Crown 3.0 sedan, the car is EFI car. Failure is not a car (but there are starter). In the past there have been some time after the engine is running automatically turn off phenomenon.
Troubleshooting: Because the car is not running, first consider whether the ignition system DS17 Infineon failure, due to the car's ignition system monitored by a computer, and therefore it should be used to drop the self-diagnostic system to help determine. After the high-pressure fire test, no sparks, tune out the fault code (turn the ignition switch, shorted terminals TE1 and E1, fault indicator flashes to read from) found a variety of failures, can not rely on self-diagnostic system diagnosis. ECU output signal may be bad, then turned by hand distributor ignition ZGT measuring ECU to the output terminal and the ground voltage, found indicate zero, check the fuse box, ignition circuit fuse did not put a new main fuse (30A), turn the sub-appliances, high-pressure fire occurs, the ignition system back to normal, start the engine, the car smoothly.
But the car for some time (only 2 minutes or so) automatically turn off, then restart the engine in the cab, then the accelerator pedal, the hands (LCD) decreased rapidly rising rapidly obd news until after flameout. Failure to observe the instrument panel lights are not displayed during engine operation, and therefore is not electrically controlled system failure caused by the analysis that may be caused by poor supply. Asked the owner, the owner said the car three years never replace the filter, then blow compressed air into the oil channel from the inlet side of the sediment and silt found there, decided to replace the filter. After replacement, start the engine, no flameout phenomenon within a few hours, the problem is resolved.
http://www.uobdii.com/wholesale/ialtest-link-coder-reader-for-freightliner-renault-hino-trucks.html
Troubleshooting: Because the car is not running, first consider whether the ignition system DS17 Infineon failure, due to the car's ignition system monitored by a computer, and therefore it should be used to drop the self-diagnostic system to help determine. After the high-pressure fire test, no sparks, tune out the fault code (turn the ignition switch, shorted terminals TE1 and E1, fault indicator flashes to read from) found a variety of failures, can not rely on self-diagnostic system diagnosis. ECU output signal may be bad, then turned by hand distributor ignition ZGT measuring ECU to the output terminal and the ground voltage, found indicate zero, check the fuse box, ignition circuit fuse did not put a new main fuse (30A), turn the sub-appliances, high-pressure fire occurs, the ignition system back to normal, start the engine, the car smoothly.
But the car for some time (only 2 minutes or so) automatically turn off, then restart the engine in the cab, then the accelerator pedal, the hands (LCD) decreased rapidly rising rapidly obd news until after flameout. Failure to observe the instrument panel lights are not displayed during engine operation, and therefore is not electrically controlled system failure caused by the analysis that may be caused by poor supply. Asked the owner, the owner said the car three years never replace the filter, then blow compressed air into the oil channel from the inlet side of the sediment and silt found there, decided to replace the filter. After replacement, start the engine, no flameout phenomenon within a few hours, the problem is resolved.
http://www.uobdii.com/wholesale/ialtest-link-coder-reader-for-freightliner-renault-hino-trucks.html
Wednesday, August 20, 2014
Ford V8 car suddenly stalled
Symptom: a V8 Ford sedan suddenly turn off the highway in the mountains, and after several starters were not effective. Before driving the car does not turn off normal, fault light on the dashboard does not shine.
Maintenance process: preliminary examination: Unplug the power lines from the central MST-100P distributor for starting the fire test, the results of powerful spark; then unplug the sub-cylinder high-voltage test fire the same normal. Step two checks: Unplug a power injector plug, connect the multimeter voltage profile, start the engine, in the hands of regular operation swing, indicating the injector pulse power supply. The third step is to check: When you open the supply line pressure relief valve, but no fuel spray discharge, indicating that there is no oil supply system.
Cause no oil pressure reasons: First, the fuel pump is not working; Second, there is a serious leak oil system places. Carefully check the fuel tank of the oil return pipe to the entire pipeline engine injector, no one leaks, leaks can be ruled out. To this end will check obd news the focus on the fuel pump does not work. To prove this, let a man put his ear to the fuel tank filler neck, the other person will twist the ignition switch to the ON position, did not hear the sound of the pump oil pump, oil pump does not have to prove the work. The reason the pump does not work there are two: First, no electricity, and second pump damage. First check whether the pump power. Built in the trunk of the car to the left of the grid controlled automatic disconnect pump relay may be bumpy mountain road driving, the automatic disconnection device is disconnected. After examination, the automatic disconnection device is in the ON position, not disconnected. Then check the pump relay and found no power supply. Then check the fuses and found 30A insurance has been blown. After replacement insurance, twist the ignition switch to the ON position, the fuse is blown once again, indicating that the circuit has a short circuit. In order to find as soon as possible short-circuit, the first pump on the tank unplug the power supply plug, put the fuse, and then twist VAG COM VCDS the ignition switch to the ON position, the insurance is no longer fuse. At this point, you can certainly burn the fuse reasons in line inside the tank or the pump itself. So out of the pump from the tank. Immediately see the line of fire pumps into the tank has been frayed fixed pump molten metal frame and stick together. For-welding a wire and wire fixed retest after loading the car, everything is normal.
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Maintenance process: preliminary examination: Unplug the power lines from the central MST-100P distributor for starting the fire test, the results of powerful spark; then unplug the sub-cylinder high-voltage test fire the same normal. Step two checks: Unplug a power injector plug, connect the multimeter voltage profile, start the engine, in the hands of regular operation swing, indicating the injector pulse power supply. The third step is to check: When you open the supply line pressure relief valve, but no fuel spray discharge, indicating that there is no oil supply system.
Cause no oil pressure reasons: First, the fuel pump is not working; Second, there is a serious leak oil system places. Carefully check the fuel tank of the oil return pipe to the entire pipeline engine injector, no one leaks, leaks can be ruled out. To this end will check obd news the focus on the fuel pump does not work. To prove this, let a man put his ear to the fuel tank filler neck, the other person will twist the ignition switch to the ON position, did not hear the sound of the pump oil pump, oil pump does not have to prove the work. The reason the pump does not work there are two: First, no electricity, and second pump damage. First check whether the pump power. Built in the trunk of the car to the left of the grid controlled automatic disconnect pump relay may be bumpy mountain road driving, the automatic disconnection device is disconnected. After examination, the automatic disconnection device is in the ON position, not disconnected. Then check the pump relay and found no power supply. Then check the fuses and found 30A insurance has been blown. After replacement insurance, twist the ignition switch to the ON position, the fuse is blown once again, indicating that the circuit has a short circuit. In order to find as soon as possible short-circuit, the first pump on the tank unplug the power supply plug, put the fuse, and then twist VAG COM VCDS the ignition switch to the ON position, the insurance is no longer fuse. At this point, you can certainly burn the fuse reasons in line inside the tank or the pump itself. So out of the pump from the tank. Immediately see the line of fire pumps into the tank has been frayed fixed pump molten metal frame and stick together. For-welding a wire and wire fixed retest after loading the car, everything is normal.
http://www.uobdii.com/producttags/bmw-key-programmer.html
Tuesday, August 19, 2014
Citroen C2 car engine fails to start
A mileage of about 130,000 km, configure 1. 6L engine and manual transmission, Dongfeng Citroen C2 cars. Users reflect: When you start up the vehicle engine is not running.
After the pick-up: Check the battery and power supply system, normal. Use self-diagnostic system for engine diagnostics, no fault codes. Check the crankshaft position sensor, measuring its resistance, normal. For insurance purposes, replace the crankshaft NEC PRO57 position sensor, commissioning, fault remains. Check fuel pressure, approximately 300kPa, within the standard value range. Check the injector and injector status, normal. Check the ignition system, spark plugs, ignition coils were normal.
Use diagnostic intelligent control box (BSI) self-diagnosis, nor fault code. See the data stream, the engine control module was found in the latched state. The other car's ignition key (transponder), intelligent control box, the engine control module together with a failure to change the car, the engine still will not start. It seems possible that the steering wheel anti-conversion module or line starting system problems, then try to replace the steering wheel conversion module, the results of the fault persists. Measuring voltage, steering wheel conversion module on the 5th terminal (usually electricity) voltage is 0V, and the standard Digimaster 3 value of the battery voltage. Check the line and found intelligent control box fuse F4 blown. Replace the fuse, test, confirm fault completely ruled out.
Fuse failure is due to the steering wheel conversion module F4 fuse on power lines caused by the ignition key can not be anti-start communication, intelligent control box controlled by the module between the boxes can not be issued with the smart unlock command, the engine is always in the closed state. When replacing the fuse F4, anti-start traffic returned to normal, the engine can smoothly start.
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After the pick-up: Check the battery and power supply system, normal. Use self-diagnostic system for engine diagnostics, no fault codes. Check the crankshaft position sensor, measuring its resistance, normal. For insurance purposes, replace the crankshaft NEC PRO57 position sensor, commissioning, fault remains. Check fuel pressure, approximately 300kPa, within the standard value range. Check the injector and injector status, normal. Check the ignition system, spark plugs, ignition coils were normal.
Use diagnostic intelligent control box (BSI) self-diagnosis, nor fault code. See the data stream, the engine control module was found in the latched state. The other car's ignition key (transponder), intelligent control box, the engine control module together with a failure to change the car, the engine still will not start. It seems possible that the steering wheel anti-conversion module or line starting system problems, then try to replace the steering wheel conversion module, the results of the fault persists. Measuring voltage, steering wheel conversion module on the 5th terminal (usually electricity) voltage is 0V, and the standard Digimaster 3 value of the battery voltage. Check the line and found intelligent control box fuse F4 blown. Replace the fuse, test, confirm fault completely ruled out.
Fuse failure is due to the steering wheel conversion module F4 fuse on power lines caused by the ignition key can not be anti-start communication, intelligent control box controlled by the module between the boxes can not be issued with the smart unlock command, the engine is always in the closed state. When replacing the fuse F4, anti-start traffic returned to normal, the engine can smoothly start.
http://www.uobdii.com/producttags/bmw-icom.html
Monday, August 18, 2014
Idle Surging in a 1992 Honda Accord
With a combined gas mileage of 24 miles per gallon, the 1992 Accord wasn't the most fuel efficient vehicle Honda ever produced. Even with the well known reliability of Honda made vehicles, they are all still subject to their own problems from time to time. A good majority of Honda owners have experienced a surging engine from time to time for various reasons, but knowing where too look is half the battle.
The first thing to check is all of your vacuum lines as extra air can cause some pretty erratic idle conditions. Inspect for any cracked, disconnected or missing vacuum lines. Any loud hissing noise from the top side of the engine will most certainly be the Ialtest Link Coder Reader location of a disconnected vacuum line. Any extra air entering the intake manifold through faulty gaskets at the manifold mating surfaces or throttle body mating surfaces can also lead so idle surging.
The first thing you need to consider is the last time the coolant system was serviced. If you recently had the system flushed or if you haven't inspected the system in a long while, you may find that there is air in the cooling system. Aside from the possibility of over heating, this can cause the ECM to read false information from the sensor and adjust the idle incorrectly or erratically. Bleed out your cooling system with the 12 mm fitting on top of the thermostat housing. When no air and only coolant comes from the bleeder, the block has been purged of air.
Your electronic air control valve and fast idle valve could also be two of the primary causes of your surging idle scenario. Remove he EACV and clean the holes thoroughly with brake cleaner and a wire brush. Your EACV is bolted to the intake manifold on the front left hand side by two 12 mm bolts and you may need to replace the mounting gasket; tighten the bolts to 16 foot-pounds. Remove the two screws securing the top to your FIV start your engine and place your finger on the valve seating; there should be air flowing outil obd2 while the engine is cold. Allow the engine to warm up and check the valve seating again, there should be no air flow. If there isn't air flow while the engine is cold or there is air flow when warmed up, the FIV is bad and needs to be replaced.
Aside from the things mentioned above, idle surging can also be caused from a sticky exhaust gas recirculation valve, bad PCV valve and a loose idle screw. The idle screw is located on the left side of the intake manifold just below the mass of vacuum lines. If the idle is set too high, specifically above 1200 rpm at idle with the engine warm and throttle plate closed, the ECM will cut off the fuel injectors until the engine speed drops to below 300 to 400 RPM; at which point it will initialize the fuel injectors again. You can remove the EGR valve and clean it with brake cleaner; torque the mounting nuts to 16 foot-pounds on installation.
http://www.uobdii.com/producttags/bmw-diagnostic-tool.html
The first thing to check is all of your vacuum lines as extra air can cause some pretty erratic idle conditions. Inspect for any cracked, disconnected or missing vacuum lines. Any loud hissing noise from the top side of the engine will most certainly be the Ialtest Link Coder Reader location of a disconnected vacuum line. Any extra air entering the intake manifold through faulty gaskets at the manifold mating surfaces or throttle body mating surfaces can also lead so idle surging.
The first thing you need to consider is the last time the coolant system was serviced. If you recently had the system flushed or if you haven't inspected the system in a long while, you may find that there is air in the cooling system. Aside from the possibility of over heating, this can cause the ECM to read false information from the sensor and adjust the idle incorrectly or erratically. Bleed out your cooling system with the 12 mm fitting on top of the thermostat housing. When no air and only coolant comes from the bleeder, the block has been purged of air.
Your electronic air control valve and fast idle valve could also be two of the primary causes of your surging idle scenario. Remove he EACV and clean the holes thoroughly with brake cleaner and a wire brush. Your EACV is bolted to the intake manifold on the front left hand side by two 12 mm bolts and you may need to replace the mounting gasket; tighten the bolts to 16 foot-pounds. Remove the two screws securing the top to your FIV start your engine and place your finger on the valve seating; there should be air flowing outil obd2 while the engine is cold. Allow the engine to warm up and check the valve seating again, there should be no air flow. If there isn't air flow while the engine is cold or there is air flow when warmed up, the FIV is bad and needs to be replaced.
Aside from the things mentioned above, idle surging can also be caused from a sticky exhaust gas recirculation valve, bad PCV valve and a loose idle screw. The idle screw is located on the left side of the intake manifold just below the mass of vacuum lines. If the idle is set too high, specifically above 1200 rpm at idle with the engine warm and throttle plate closed, the ECM will cut off the fuel injectors until the engine speed drops to below 300 to 400 RPM; at which point it will initialize the fuel injectors again. You can remove the EGR valve and clean it with brake cleaner; torque the mounting nuts to 16 foot-pounds on installation.
http://www.uobdii.com/producttags/bmw-diagnostic-tool.html
Friday, August 15, 2014
How to Check the Charging System on a 1990 Honda Civic EX
Many inexperienced do-it-yourself mechanics and even some professional mechanics think that testing a charging system involves just probing the battery and checking for 14-or-so volts. This is not the case, however, as your 1990 Civic’s electrical system requires a perfect balance of both voltage and amps to keep it all running and still charge the battery. Another tricky situation in testing your Civic’s Benz NEC PRO57 charging system is applying the correct load to the system. This requires a special tool called an alternator tester with integrated carbon pile. You can rent this tool from some auto parts stores for just a security deposit.
Inspect the wiring harness on the rear of the alternator. Check that it is connected to the alternator securely and not broken or brittle. If there is any damage, replace the harness.
Start the engine and allow it to idle until it reaches normal operating temperature, roughly halfway up the temperature gauge. Turn the ignition to the “Off” position.
Unplug the wiring harness from the rear of the alternator. In the wiring harness, find the black wire with a yellow stripe; use the positive lead of a multimeter to probe the pin it connects to. Touch the negative multimeter wire to the ground terminal on the battery. Check that the voltage displayed on the multimeter is at least 10.5. If there is no voltage or it is less than 10.5, check fuse No. 14 in the dashboard fuse panel and replace it as needed. If the fuse is not blown, inspect the black wire with a yellow stripe for defects. If the voltage is 10.5 or higher, proceed to the next step.
Turn off all accessories. Move the positive multimeter probe to the positive battery terminal and move the negative Launch X431 V probe to the pin in the harness connected to the white wire with a yellow stripe. Instruct an assistant to start the engine. Check for at least 10.5 volts of electricity on the multimeter display. If there is at least 10.5 volts, proceed to the next step. If the voltage is low or nonexistent, check the white wire with a yellow stripe for a break, cut or short. Repair the wire and retest. If there are no defects in the wire, have the electronic control unit tested, as it has probably failed.
Turn the headlights on and watch for the multimeter to drop to 0 volts. If it drops to 0 volts, proceed to the next step. If there is still voltage, inspect the white wire with yellow stripe for defects. Repair any defects in the wire and retest. If the condition exists after repair or there were no defects in the wire, have the ECU tested, as it has likely failed.
Turn the engine off and allow the Civic to sit until the engine is cool to the touch. Connect obd2 scanenr the positive (red) cable of an alternator tester with integral carbon pile, also called an alternator load tester, to the positive battery cable, the one with the "+" above it. Connect the negative (black) cable of the alternator tester to the negative battery terminal, the one with a "-" above it.
Start the engine and have an assistant increase the engine speed to 2,000 rpm. Set the alternator tester to test volts and turn on the tester’s "Load" feature. Check the voltage reading; it must be no less than 12 volts. If it is less than 12 volts, replace the alternator.
Switch the alternator tester to measure amperage, with the "Load" feature still on, and instruct an assistant to hold the engine speed at 2,000 rpm. Read the amperage level on the alternator tester. The correct reading for this alternator is roughly between 40 and 30 amps. If the alternator is not within specification, replace the alternator.
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Inspect the wiring harness on the rear of the alternator. Check that it is connected to the alternator securely and not broken or brittle. If there is any damage, replace the harness.
Start the engine and allow it to idle until it reaches normal operating temperature, roughly halfway up the temperature gauge. Turn the ignition to the “Off” position.
Unplug the wiring harness from the rear of the alternator. In the wiring harness, find the black wire with a yellow stripe; use the positive lead of a multimeter to probe the pin it connects to. Touch the negative multimeter wire to the ground terminal on the battery. Check that the voltage displayed on the multimeter is at least 10.5. If there is no voltage or it is less than 10.5, check fuse No. 14 in the dashboard fuse panel and replace it as needed. If the fuse is not blown, inspect the black wire with a yellow stripe for defects. If the voltage is 10.5 or higher, proceed to the next step.
Turn off all accessories. Move the positive multimeter probe to the positive battery terminal and move the negative Launch X431 V probe to the pin in the harness connected to the white wire with a yellow stripe. Instruct an assistant to start the engine. Check for at least 10.5 volts of electricity on the multimeter display. If there is at least 10.5 volts, proceed to the next step. If the voltage is low or nonexistent, check the white wire with a yellow stripe for a break, cut or short. Repair the wire and retest. If there are no defects in the wire, have the electronic control unit tested, as it has probably failed.
Turn the headlights on and watch for the multimeter to drop to 0 volts. If it drops to 0 volts, proceed to the next step. If there is still voltage, inspect the white wire with yellow stripe for defects. Repair any defects in the wire and retest. If the condition exists after repair or there were no defects in the wire, have the ECU tested, as it has likely failed.
Turn the engine off and allow the Civic to sit until the engine is cool to the touch. Connect obd2 scanenr the positive (red) cable of an alternator tester with integral carbon pile, also called an alternator load tester, to the positive battery cable, the one with the "+" above it. Connect the negative (black) cable of the alternator tester to the negative battery terminal, the one with a "-" above it.
Start the engine and have an assistant increase the engine speed to 2,000 rpm. Set the alternator tester to test volts and turn on the tester’s "Load" feature. Check the voltage reading; it must be no less than 12 volts. If it is less than 12 volts, replace the alternator.
Switch the alternator tester to measure amperage, with the "Load" feature still on, and instruct an assistant to hold the engine speed at 2,000 rpm. Read the amperage level on the alternator tester. The correct reading for this alternator is roughly between 40 and 30 amps. If the alternator is not within specification, replace the alternator.
http://www.uobdii.com/producttags/bmw-diagnostic-tool.html
Thursday, August 14, 2014
Honda Accord sedan charge indicator does not go out
A Honda Accord 2.3L sedan, sensational machine charging indicator does not go out after starting, the vehicle has been in charge indicator lights, battery-free power loss feeling.
Troubleshooting:
(A) Failure Cause Analysis
The car is integral generator, if the battery does not lose power, then the normal power generator, charging DS17 Infineon Tricore Boot Reader indicator light does not go out of the possible causes, mainly the charge indicator circuit shorted; within the generator voltage regulator short circuit.
(2) Troubleshooting Methods
Measured with a multimeter DC voltage profile battery voltage, as 12.2V, normal; after starting the engine acceleration, the engine speed stabilized at 2000r / min or so, the battery voltage is measured 14. 5 V, described generators properly.
Turn the ignition switch after the engine stalled, will lead the generator plug unplug (4 core), and then turn the ignition switch, the charging light is not on, indicating that the generator has an internal short circuit faults.
(3) failure treatment measures
Removing the generator, after the disintegration of the replacement of the voltage regulator, charge can clip indicator work back to normal, troubleshooting.
Failure Analysis: Check the battery voltage and charging voltage stationary when the engine is running, is to verify whether the normal power generator. The car charging indicator L terminal access via a voltage regulator on the generator, but does not form field winding path.
After connecting the generator harness connector unplugged, if the charge indicator still lights up, then there is a charge indicator line short-circuit fault, should overhaul the connection charge indicator line.
http://www.uobdii.com/producttags/bmw-key-programmer.html
Troubleshooting:
(A) Failure Cause Analysis
The car is integral generator, if the battery does not lose power, then the normal power generator, charging DS17 Infineon Tricore Boot Reader indicator light does not go out of the possible causes, mainly the charge indicator circuit shorted; within the generator voltage regulator short circuit.
(2) Troubleshooting Methods
Measured with a multimeter DC voltage profile battery voltage, as 12.2V, normal; after starting the engine acceleration, the engine speed stabilized at 2000r / min or so, the battery voltage is measured 14. 5 V, described generators properly.
Turn the ignition switch after the engine stalled, will lead the generator plug unplug (4 core), and then turn the ignition switch, the charging light is not on, indicating that the generator has an internal short circuit faults.
(3) failure treatment measures
Removing the generator, after the disintegration of the replacement of the voltage regulator, charge can clip indicator work back to normal, troubleshooting.
Failure Analysis: Check the battery voltage and charging voltage stationary when the engine is running, is to verify whether the normal power generator. The car charging indicator L terminal access via a voltage regulator on the generator, but does not form field winding path.
After connecting the generator harness connector unplugged, if the charge indicator still lights up, then there is a charge indicator line short-circuit fault, should overhaul the connection charge indicator line.
Wednesday, August 13, 2014
Unable to start the new Ford Mondeo
A mileage of about 4500km of new Mondeo sedan. The car appeared the vehicle can not be started phenomenon.
Troubleshooting: owners of foreign clients, by telephone, to reflect on the remote control is not flexible, door open. Under the guidance of the maintenance personnel with mechanical keys will open the door to start no response, the initial judgment is a battery-fed MST-100P power lead. Maintenance personnel to allow owners to rescue company, rescue company appointed by it to the rescue scene. Maintenance personnel arrived at the scene to determine the battery is dead and lead to failure, and found that the owner will gear placed on N gear. Preliminary judgment is therefore cause the car to discharge. But the gear lock car households without reference signal it. The car will be a smooth ride electric vehicles. The car 10min later, the flame can start again, no discharge measuring vehicle. Maintenance personnel told the owner, be sure to stop future gear lever into the corpse position, otherwise the vehicle will not enter the sleep state, the vehicle always discharge. Owners expressed satisfaction with the service.
Service Summary: After back to the factory verification, the entire department under 2.0T keyless Porsche Piwis 2 vehicle regardless of the shift lever in any gear, the ignition switch is turned off or the case, car keys in the car or outside the car, the vehicle can really properly locked, but vehicle unlocked condition has changed, no longer reference corpse gear signal and ignition switch signal. Vehicles with rear-view mirror recovery function, in the case of the front door open, all doors can not be locked, but the rear-view mirror can be recovered, shut the door after recovery, mirrors automatically open. In addition to the two front car door, all other doors open, the vehicle may be more locks.
http://www.uobdii.com/producttags/bmw-icom.html
Troubleshooting: owners of foreign clients, by telephone, to reflect on the remote control is not flexible, door open. Under the guidance of the maintenance personnel with mechanical keys will open the door to start no response, the initial judgment is a battery-fed MST-100P power lead. Maintenance personnel to allow owners to rescue company, rescue company appointed by it to the rescue scene. Maintenance personnel arrived at the scene to determine the battery is dead and lead to failure, and found that the owner will gear placed on N gear. Preliminary judgment is therefore cause the car to discharge. But the gear lock car households without reference signal it. The car will be a smooth ride electric vehicles. The car 10min later, the flame can start again, no discharge measuring vehicle. Maintenance personnel told the owner, be sure to stop future gear lever into the corpse position, otherwise the vehicle will not enter the sleep state, the vehicle always discharge. Owners expressed satisfaction with the service.
Service Summary: After back to the factory verification, the entire department under 2.0T keyless Porsche Piwis 2 vehicle regardless of the shift lever in any gear, the ignition switch is turned off or the case, car keys in the car or outside the car, the vehicle can really properly locked, but vehicle unlocked condition has changed, no longer reference corpse gear signal and ignition switch signal. Vehicles with rear-view mirror recovery function, in the case of the front door open, all doors can not be locked, but the rear-view mirror can be recovered, shut the door after recovery, mirrors automatically open. In addition to the two front car door, all other doors open, the vehicle may be more locks.
http://www.uobdii.com/producttags/bmw-icom.html
Tuesday, August 12, 2014
Monday, August 11, 2014
Toyota Corolla car can not be a cold start
A mileage of about 138,000 km, assembly 1ZZ engine 2005 Toyota Corolla sedan. Customer reflect: the car stalled vehicles placed for some time, for the first time does MST-9001D not start, repeat start after two or three times to be successful.
Failure Analysis: According to the customer said the vehicle is placed over 20min, and she was unable to start the vehicle again, two consecutive times to start the vehicle. The reason for this failure is probably generated by poor fuel oil or ignition system. First check the vehicle fuel pressure, fuel pressure test gauge installed gasoline, start the engine oil pressure is 320kPa, normal. After a slow flame fuel pressure drops to 0kPa, leak quickly, without keeping oil. Hydraulic test after suspected petrol pressure regulator valve failure, replace the fuel pressure regulator. After fgtech galletto 4 v 54 starting the engine stops when the fuel pressure is 320kPa, after the flame fuel pressure dropped to about 200kPa not move normally.
Troubleshooting: Replace the problem resolved petrol pressure regulator valve.
Failure revelation: the rational use tool that can quickly solve the problem.
Failure Comments: This is a very simple fault, but if the idea is not clear, check, determine it is not necessarily able to quickly find the root of the problem. So we need to have a correct diagnosis of ideas, while rational use of equipment, so as to do more with less.
http://www.uobdii.com/producttags/bmw-diagnostic-tool.html
Failure Analysis: According to the customer said the vehicle is placed over 20min, and she was unable to start the vehicle again, two consecutive times to start the vehicle. The reason for this failure is probably generated by poor fuel oil or ignition system. First check the vehicle fuel pressure, fuel pressure test gauge installed gasoline, start the engine oil pressure is 320kPa, normal. After a slow flame fuel pressure drops to 0kPa, leak quickly, without keeping oil. Hydraulic test after suspected petrol pressure regulator valve failure, replace the fuel pressure regulator. After fgtech galletto 4 v 54 starting the engine stops when the fuel pressure is 320kPa, after the flame fuel pressure dropped to about 200kPa not move normally.
Troubleshooting: Replace the problem resolved petrol pressure regulator valve.
Failure revelation: the rational use tool that can quickly solve the problem.
Failure Comments: This is a very simple fault, but if the idea is not clear, check, determine it is not necessarily able to quickly find the root of the problem. So we need to have a correct diagnosis of ideas, while rational use of equipment, so as to do more with less.
http://www.uobdii.com/producttags/bmw-diagnostic-tool.html
Wednesday, August 6, 2014
Subaru Outback not start after flameout
A mileage of about 56,000 km of the 2011 Subaru Outback. Customer reflect: the car has traveled 55213km, suddenly appeared a few days ago with the way the fault lamp is lit, the flame can not be started again after step aside, stop check request.
Troubleshooting: Customer stop after an appointment, arrange for service technicians to check on the car, using SM3 diagnostic check engine diagnostic system, found fault code display P0890 AT self-closing relay failure. In order to determine whether the obd2 scanner occasional failure, so maintenance technicians will remove the fault code, then open the key, the vehicle a smooth start.
Repair phenomenon seems different now, and then accompany clients road test also found no abnormalities, are occasional unexplained fault really? Unexpectedly, when the pit by a deceleration zone, bumped observed AT OIL flash on the instrument, and then turn off the vehicle into the shop, connected to diagnostic trouble code check, or initial fault code.
When trying to start the vehicle again and found that the vehicle has been unable to start, just to hear the starter there, "da da da" sound. Erupted fault though reproduction, but the technician thought it might be battery power loss or power generator is not caused. Borrowing a new battery from the warehouse, but still can not start after installed.
Honestly in accordance with DTC, it was discovered that the fault code relay is actually referring to TCM's power supply.
Check the relay lines are good, also found no loose phenomenon, taken down to check on the relay itself, static testing and dynamic testing were also normal. At this point we doubt whether there is poor contact TCM itself inside the phenomenon exists, but did not because of the site which models TCM, so had to relay and TCM loading, try a hand car diagnsotic tool to shake these two components were tested, shaking and tapping TCM, failure did not occur, but beat the relay when, AT OIL suddenly lit on the instrument, then immediately turn off the engine while the vehicle can not be started again.
Then you can say to the failed component was finally determined, that is the relay inside the TCM has a loose place, when after a bumpy road this failure phenomenon will occur. Replacing a relay troubleshooting.
Failure Summary: regular maintenance in the mouth, when faced some failure, failure to follow judge's logic, especially when there has been relatively clear diagnostic trouble codes do reference, do not be ignored.
In this case because of maintenance technicians with experience from start machine "da da" sound, derived battery failure, so take a detour.
After three packs of policies for our maintenance work is also a test of the vehicle to be repaired in a short time, then determine the fault is particularly important.
http://www.uobd2.net/wholesale/kess-v2-obd2-manager-tuning-kit.html
Troubleshooting: Customer stop after an appointment, arrange for service technicians to check on the car, using SM3 diagnostic check engine diagnostic system, found fault code display P0890 AT self-closing relay failure. In order to determine whether the obd2 scanner occasional failure, so maintenance technicians will remove the fault code, then open the key, the vehicle a smooth start.
Repair phenomenon seems different now, and then accompany clients road test also found no abnormalities, are occasional unexplained fault really? Unexpectedly, when the pit by a deceleration zone, bumped observed AT OIL flash on the instrument, and then turn off the vehicle into the shop, connected to diagnostic trouble code check, or initial fault code.
When trying to start the vehicle again and found that the vehicle has been unable to start, just to hear the starter there, "da da da" sound. Erupted fault though reproduction, but the technician thought it might be battery power loss or power generator is not caused. Borrowing a new battery from the warehouse, but still can not start after installed.
Honestly in accordance with DTC, it was discovered that the fault code relay is actually referring to TCM's power supply.
Check the relay lines are good, also found no loose phenomenon, taken down to check on the relay itself, static testing and dynamic testing were also normal. At this point we doubt whether there is poor contact TCM itself inside the phenomenon exists, but did not because of the site which models TCM, so had to relay and TCM loading, try a hand car diagnsotic tool to shake these two components were tested, shaking and tapping TCM, failure did not occur, but beat the relay when, AT OIL suddenly lit on the instrument, then immediately turn off the engine while the vehicle can not be started again.
Then you can say to the failed component was finally determined, that is the relay inside the TCM has a loose place, when after a bumpy road this failure phenomenon will occur. Replacing a relay troubleshooting.
Failure Summary: regular maintenance in the mouth, when faced some failure, failure to follow judge's logic, especially when there has been relatively clear diagnostic trouble codes do reference, do not be ignored.
In this case because of maintenance technicians with experience from start machine "da da" sound, derived battery failure, so take a detour.
After three packs of policies for our maintenance work is also a test of the vehicle to be repaired in a short time, then determine the fault is particularly important.
http://www.uobd2.net/wholesale/kess-v2-obd2-manager-tuning-kit.html
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