1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.
2. Check ground connection M95. Refer to Ground Inspection in Circuit Inspection.

Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair or replace ground connection.
2.CHECK FPCM POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect fuel pump control module (FPCM) harness connector.
3. Turn ignition switch ON.
4. Check the voltage between FPCM harness connector and ground.

   FPCM | Ground | Voltage
   Connector | Terminal
   B230 | 10 | Ground | Battery voltage

Is the inspection result normal?
YES>>GO TO 4.
NO>>GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.

- 15A fuse (No.41)
- Harness connectors E106, M6
- Harness connectors B201, M117
- Harness for open or short between FPCM and IPDM E/R

>>Repair open circuit, short to ground or short to power in harness or connectors.
4.CHECK FPCM GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Check the continuity between FPCM harness connector and ground.

   FPCM | Ground | Continuity
   Connector | Terminal
   B230 | 5 | Ground | Existed
   1

3. Also check harness for short to power.

Is the inspection result normal?
YES>>GO TO 5.
NO>>Repair open circuit or short to power in harness or connectors.
5.CHECK FPCM INPUT CIRCUIT FOR OPEN AND SHORT

1. Disconnect ECM harness connector.
2. Check the continuity between FPCM harness connector and ECM harness connector.

   FPCM | ECM | Continuity
   Connector | Terminal | Connector | Terminal
   B230 | 8 | F101 | 29 | Existed
   9 | 30

3. Also check harness for short to ground and short to power.

Is the inspection result normal?
YES>>GO TO 7.
NO>>GO TO 6.
6.DETECT MALFUNCTIONING PART
Check the following.

- Harness connectors F103, M116
- Harness connectors B201, M117
- Harness for open or short between FPCM and ECM

>>Repair open circuit, short to ground or short to power in harness or connectors.
7.CHECK FPCM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect “fuel level sensor unit and fuel pump (main)” harness connector.
2. Check the continuity between FPCM harness connector and “fuel level sensor unit and fuel pump (main)” harness connector.

   FPCM | Fuel level sensor unit and fuel pump (main) | Continuity
   Connector | Terminal | Connector | Terminal
   B230 | 6 | B225 | 5 | Existed
   7 | 4

3. Also check harness for short to ground and short to power.

Is the inspection result normal?
YES>>GO TO 8.
NO>>Repair open circuit, short to ground or short to power in harness or connectors.
8.CHECK FPCM
Refer to Component Inspection (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 9.
NO>>Replace FPCM.
9.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END