1.CHECK SUB FUEL PUMP RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect sub fuel pump relay.
3. Disconnect ECM harness connector.
4. Check harness for short to ground between sub fuel pump relay harness connector and ECM harness connector.

   Sub fuel pump relay | ECM
   Connector | Terminal | Connector | Terminal
   B242 | 2 | M107 | 126

Is the inspection result normal?
YES>>GO TO 3.
NO>>GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.

- Harness connectors B201, M117
- Harness for short between sub fuel pump relay and ECM

>>Repair short to ground in harness or connectors.
3.CHECK SUB FUEL PUMP POWER SUPPLY CIRCUIT

1. Disconnect sub fuel pump harness connector.
2. Check harness for short to power between sub fuel pump relay harness connector and “fuel level sensor unit and fuel pump (sub fuel pump)” harness connector.

   Sub fuel pump relay | Fuel level sensor unit and fuel pump (sub fuel pump)
   Connector | Terminal | Connector | Terminal
   B242 | 5 | B226 | 1

Is the inspection result normal?
YES>>GO TO 4.
NO>>Repair short to power in harness or connectors.
4.CHECK SUB FUEL PUMP RELAY
Refer to Component Inspection (SUB FUEL PUMP RELAY) (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 5.
NO>>Replace sub fuel pump relay.
5.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END