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.
Fuel injector Ground Voltage Cylinder Connector Front / Rear Terminal 1 F17 Front 1 Ground Battery voltage F53 Rear 2 F18 Front 1 F54 Rear 3 F19 Front 1 F29 Rear 4 F20 Front 1 F30 Rear Is the inspection result normal?
YES: GO TO 3.
NO: GO TO 2.
- DETECT MALFUNCTIONING PART
Check the following.
- IPDM E/R connector F42
- 10 A fuse (No. 55)
- 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.
Fuel injector ECM Continuity Cylinder Connector Front / Rear Terminal Connector Terminal 1 F17 Front 2 F10 31 Existed F53 Rear 12 2 F18 Front 2 30 F54 Rear 20 3 F19 Front 2 29 F29 Rear 16 4 F20 Front 2 25 F30 Rear 24 - 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. Refer to "REMOVAL AND INSTALLATION "
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
Is the inspection result normal?
YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".
NO: Repair or replace harness or connectors.