Diagnosis Procedure
- CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect fuel injector harness connector.
- Turn ignition switch ON.
- Check the voltage between fuel injector harness connector and ground.
TERMINAL VOLTAGE REFERENCE CHARTFuel injector Ground Voltage Cylinder Connector Terminal 1 F37 1 Ground Battery voltage 2 F38 1 3 F39 1 4 F40 1 Is the inspection result normal?
YES: GO TO 3.
NO: GO TO 2.
- DETECT MALFUNCTIONING PART
Check the following.
- IPDM E/R harness connector E15
- 15 A fuse (No. 62)
- Harness for open or short between fuel injector and fuse
Repair open circuit or short to ground or short to power in harness or connectors.
- CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between fuel injector harness connector and ECM harness connector.TERMINAL CONTINUITY REFERENCE CHART
Fuel injector ECM Continuity Cylinder Connector Terminal Connector Terminal 1 F37 2 F7 31 Existed 2 F38 2 30 3 F39 2 29 4 F40 2 25 - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 4.
NO: Repair open circuit or short to ground or short to power in harness or connectors.
- CHECK FUEL INJECTOR
Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?
YES: GO TO 5.
NO: Replace malfunctioning fuel injector.
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
Is the inspection result normal?
YES: Replace IPDM E/R.
NO: Repair open circuit or short to ground or short to power in harness or connectors.