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.VOLTAGE REFERENCE CHART
Fuel injector Ground Voltage Cylinder Connector Terminal 1 F17 1 Ground Battery voltage 2 F18 1 3 F19 1 4 F20 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 F10
- 10A fuse (No. 35)
- 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.ECM CONTINUITY REFERENCE CHART
Fuel injector ECM Continuity Cylinder Connector Terminal Connector Terminal 1 F17 2 F14 32 Existed 2 F18 2 31 3 F19 2 30 4 F20 2 29 - 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.