GSIC - Global Service Information Center

### SFI SYSTEM > Fuel Pump Control Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

When using intelligent tester:

PERFORM ACTIVE TEST (OPERATE C/OPN RELAY)

CHECK ECM POWER SOURCE CIRCUIT

CHECK ECM (FC VOLTAGE)

CHECK INTEGRATION RELAY (C/OPN RELAY)

CHECK WIRE HARNESS (C/OPN RELAY - ECM)

INSPECT FUEL PUMP

CHECK WIRE HARNESS (C/OPN RELAY - FUEL PUMP, FUEL PUMP - BODY GROUND)

When not using intelligent tester:

INSPECT OPERATION OF FUEL PUMP

CHECK ECM POWER SOURCE CIRCUIT

CHECK ECM (FC VOLTAGE)

CHECK INTEGRATION RELAY (C/OPN RELAY)

CHECK WIRE HARNESS (C/OPN RELAY - ECM)

INSPECT FUEL PUMP

CHECK WIRE HARNESS (C/OPN RELAY - FUEL PUMP, FUEL PUMP - BODY GROUND)