 1.CHECK GROUND CONNECTION
- Turn ignition switch OFF.
- Check ground connection B214. Refer to Ground Inspection in Circuit Inspection.
Is the inspection result normal?
YES >>GO TO 2. NO >>Repair or replace ground connection.
 2.CHECK SUB FUEL PUMP RELAY POWER SUPPLY CIRCUIT-I
- 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 4. NO >>GO TO 3.
 3.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.
 4.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 6. NO >>GO TO 5.
 5.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.
 6.CHECK SUB FUEL PUMP RELAY
 7.CHECK SUB FUEL PUMP POWER SUPPLY CIRCUIT
- Disconnect “fuel level sensor unit and fuel pump (sub fuel pump)” harness connector.
- Check the continuity between sub fuel pump relay harness connector and “fuel level sensor unit and fuel pump (sub fuel pump)” harness connector.
Sub fuel pump relay
| Fuel level sensor unit and fuel pump (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 8. NO >>Repair open circuit, short to ground or short to power in harness or connectors.
 8.CHECK SUB FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
- Check the continuity between “fuel level sensor unit and fuel pump (sub fuel pump)” harness connector and ground.
Fuel level sensor unit and fuel pump (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 9. NO >>Repair open circuit or short to power in harness or connectors.
 9.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 11. NO >>GO TO 10.
 10.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.
 11.CHECK SUB FUEL PUMP INPUT CIRCUIT FOR OPEN AND SHORT-II
- Disconnect condenser harness connector.
- Check the continuity between sub fuel pump relay harness connector and condenser harness connector.
Sub fuel pump relay
| Condenser
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| B242
| 5
| B229
| 1
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 12. >>Repair open circuit, short to ground or short to power in harness or connectors.
 12.CHECK SUB FUEL PUMP INPUT CIRCUIT FOR OPEN AND SHORT-III
- Check the continuity between “fuel level sensor unit and fuel pump (sub fuel pump)” harness connector and ECM harness connector.
Fuel level sensor unit and fuel pump (sub fuel pump)
| 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 14. NO >>GO TO 13.
 13.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.
 14.CHECK SUB FUEL PUMP INPUT CIRCUIT FOR OPEN AND SHORT-IV
- Check the continuity between “fuel level sensor unit and fuel pump (sub fuel pump)” harness connector and condenser harness connector.
Fuel level sensor unit and fuel pump (sub fuel pump)
| Condenser
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| B226
| 2
| B229
| 2
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 15. >>Repair open circuit, short to ground or short to power in harness or connectors.
 15.CHECK CONDENSER
 16.CHECK SUB FUEL PUMP
 17.CHECK INTERMITTENT INCIDENT
|