nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Diagram Information and Instructions|Page 182 > < Diagram Information and Instructions|Page 180
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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 

Diagram Information and Instructions|Page 182 > < Diagram Information and Instructions|Page 180