Operation CHARM: Car repair manuals for everyone.

Fuel Pump Control Unit: Testing and Inspection

1. Start engine and warm it up sufficiently.
2. Turn ignition switch "OFF" and wait at least 5 seconds.
3. Start engine and let it idle.




4. Check voltage between terminals (1) and (2).

Within 30 seconds of starting engine:
Approximately 0V
More than 30 seconds after starting engine:
Approximately 3.7V


5. If NG, replace FPCM.