 1.CHECK SUB FUEL PUMP RELAY POWER SUPPLY CIRCUIT- I
- Turn ignition switch OFF.
- Disconnect sub fuel pump relay.
- Turn ignition switch ON.
- Check the voltage between sub fuel pump relay harness connector and ground.
Sub fuel pump relay
| Ground
| Voltage
| Connector
| Terminal
| B242
| 1
| Ground
| Battery voltage
| 3
|
Is the inspection result normal?
YES >>GO TO 3. NO >>GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following. - 10A fuse (No.42)
- 15A fuse (No.16)
- Harness connectors E106, M6
- Harness connectors B201, M117
- Harness for open or short between sub fuel pump relay and IPDM E/R
- Harness for open or short between sub fuel pump relay and fuse block (J/B)
>>Repair open circuit, short to ground or short to power in harness or connectors.
3.CHECK SUB FUEL PUMP RELAY POWER SUPPLY CIRCUIT- II
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between sub fuel pump relay harness connector and ECM harness connector.
Sub fuel pump relay
| ECM
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| B242
| 2
| M107
| 126
| Existed
|
- 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 B201, M117
- Harness for open or short between sub fuel pump relay and ECM
>>Repair open circuit, short to ground or short to power in harness or connectors.
5.CHECK SUB FUEL PUMP RELAY
6.CHECK SUB FUEL PUMP POWER SUPPLY CIRCUIT
- Disconnect sub fuel pump harness connector.
- Check the continuity between sub fuel pump relay harness connector and sub fuel pump harness connector.
Sub fuel pump relay
| Sub fuel pump
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| B242
| 5
| B226
| 1
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 7. NO >>Repair open circuit, short to ground or short to power in harness or connectors.
7.CHECK SUB FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
- Check the continuity between sub fuel pump harness connector and ground.
Sub fuel pump
| Ground
| Continuity
| Connector
| Terminal
| B226
| 2
| Ground
| Existed
|
- Also check harness for short to power.
Is the inspection result normal?
YES >>GO TO 8. NO >>Repair open circuit or short to power in harness or connectors.
8.CHECK SUB FUEL PUMP INPUT CIRCUIT FOR OPEN AND SHORT-I
- Check the continuity between sub fuel pump relay harness connector and ECM harness connector.
Sub fuel pump relay
| ECM
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| B242
| 5
| F102
| 93
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 10. NO >>GO TO 9.
9.DETECT MALFUNCTIONING PART
Check the following. - Harness connectors F103, M116
- Harness connectors B201, M117
- Harness for open or short between sub fuel pump relay and ECM
>>Repair open circuit, short to ground or short to power in harness or connectors.
10.CHECK SUB FUEL PUMP INPUT CIRCUIT FOR OPEN AND SHORT-II
- Check the continuity between sub fuel pump harness connector and ECM harness connector.
Sub fuel pump relay
| ECM
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| B226
| 2
| F102
| 94
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 12. NO >>GO TO 11.
11.DETECT MALFUNCTIONING PART
Check the following. - Harness connectors F103, M116
- Harness connectors B201, M117
- Harness for open or short between sub fuel pump and ECM
>>Repair open circuit, short to ground or short to power in harness or connectors.
12.CHECK SUB FUEL PUMP
13.CHECK INTERMITTENT INCIDENT
|