Diagnosis Procedure
- CHECK FPCM POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect FPCM harness connector.
- Turn ignition switch ON.
- Check the voltage between FPCM harness connector and ground.
FPCM Ground Voltage Connector Terminal B41 10 Ground Battery voltage Is the inspection result normal?
YES: GO TO 2.
NO: GO TO 3.
- CHECK FPCM POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect IPDM E/R harness connector.
- Check the continuity between FPCM harness connector and IPDM E/R harness connector.
FPCM IPDM E/R Continuity Connector Terminal Connector Terminal B41 10 E10 13 Existed - Also check harness for short to ground.
Is the inspection result normal?
YES: Perform the trouble diagnosis for power supply circuit.
NO: Repair or replace error-detected parts.
- CHECK FPCM GROUND CIRCUIT
- CHECK FPCM INPUT AND OUTPUT CIRCUITS
- Disconnect ECM harness connector.
- Check the continuity between FPCM harness connector and ECM harness connector.
FPCM ECM Continuity Connector Terminal Connector Terminal B41 8 F7 21 Existed 9 20 - Also check harness for short to ground and to power.
Is the inspection result normal?
YES: GO TO 5.
NO: Repair or replace error-detected parts.
- CHECK FUEL PUMP CONTROL CIRCUIT
- Disconnect fuel level sensor unit (fuel pump) harness connector.
- Check the continuity between FPCM harness connector and fuel level sensor unit (fuel pump) harness connector.
FPCM Fuel level sensor unit (fuel pump) Continuity Connector Terminal Connector Terminal B41 6 B40 3 Existed 7 1 - Also check harness for short to ground and to power.
Is the inspection result normal?
YES: GO TO 6.
NO: Repair or replace error-detected parts.
- CHECK FPCM
Check the FPCM. Refer to "COMPONENT INSPECTION (FPCM) ".
Is the inspection result normal?
YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".
NO: Replace FPCM. Refer to "REMOVAL AND INSTALLATION ".