Fuel Pump Control Unit: Testing and Inspection

COMPONENT INSPECTION
FPCM

With Consult
1. Start engine and let it idle.
2. Perform "FPCM" in "ACTIVE TEST" mode with CONSULT.
3. Check the following.




- When selecting "HI", "FPCM DR VOLT" indicates approximately 0 V.




- When selecting "LOW", "FPCM DR VOLT" indicates approximately 4.4 V.

4. If NG, replace FPCM.

OR

Without Consult
1. Start engine and warm it up to normal operating temperature.
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).

When starting engine:
Approximately 0 V

After starting engine:
Approximately 5 V

5. If NG, replace FPCM.

Dropping Resistor




Check resistance between terminals (1) and (2).

Resistance: Approximately 0.8 Ohms at 25°C (77°F)