1.CHECK SUB FUEL PUMP POWER SUPPLY CIRCUIT

1. Disconnect sub fuel pump relay.
2. Disconnect “fuel level sensor unit and fuel pump (sub fuel pump)” harness connector.
3. Check the continuity 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) | Continuity
   Connector | Terminal | Connector | Terminal
   B242 | 5 | B226 | 1 | Existed

Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair open circuit.
2.CHECK SUB FUEL PUMP GROUND CIRCUIT FOR OPEN
Check the continuity between “fuel level sensor unit and fuel pump (sub fuel pump)” harness connector and ground.

Fuel level sensor unit and fuel pump (sub fuel pump) | Ground | Continuity
Connector | Terminal
B226 | 2 | Ground | Existed

Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair open circuit.
3.CHECK SUB FUEL PUMP
Refer to Component Inspection (SUB FUEL PUMP RELAY) (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 4.
NO>>Replace “main fuel level sensor unit, fuel filter and fuel pump assembly”.
4.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END