 1.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
| Terminal
| 1
| F121
| 1
| Ground
| Battery voltage
| 2
| F122
| 1
| 3
| F123
| 1
| 4
| F124
| 1
| 5
| F125
| 1
| 6
| F126
| 1
|
Is the inspection result normal?
YES >>GO TO 3. NO >>GO TO 2.
 2.DETECT MALFUNCTIONING PART
Check the following. - Harness connectors F48, F120
- Harness connectors F103, M116
- Harness connectors E106, M6
- IPDM E/R harness connector E7
- 10A fuse (No. 44)
- Harness for open or short between fuel injector and fuse
>>Repair open circuit, short to ground or short to power in harness or connectors.
 3.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
| Terminal
| Connector
| Terminal
| 1
| F121
| 2
| F102
| 25
| Existed
| 2
| F122
| 2
| 21
| 3
| F123
| 2
| 17
| 4
| F124
| 2
| 37
| 5
| F125
| 2
| 41
| 6
| F126
| 2
| 45
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 5. NO >>GO TO 4
 4.DETECT MALFUNCTIONING PART
Check the following. - Harness connectors F48, F120
- Harness for open or short between fuel injector and ECM
>>Repair open circuit, short to ground or short to power in harness or connectors.
 5.CHECK FUEL INJECTOR
 6.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident. Is the inspection result normal? YES >>Replace IPDM E/R. NO >>Repair open circuit, short to ground or short to power in harness or connectors.
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