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.
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