 1.START
 2.CHECK COOLING FAN CONTROL MODULE 1 POWER SUPPLY CIRCUIT-I
- Turn ignition switch OFF.
- Disconnect cooling fan control module 1 harness connector.
- Turn ignition switch ON.
- Check the voltage between cooling fan control module 1 harness connector and ground.
Cooling fan control module 1
| Ground
| Voltage
| Connector
| Terminal
| E35
| 3
| Ground
| Battery voltage
|
Is the inspection result normal?
YES >>GO TO 4. NO >>GO TO 3.
 3.CHECK COOLING FAN CONTROL MODULE 1 POWER SUPPLY CIRCUIT-I
- Turn ignition switch OFF.
- Disconnect cooling fan relay 1.
- Check the continuity between cooling fan control module 1 harness connector and cooling fan relay 1 harness connector.
Cooling fan control module 1
| Cooling fan relay 1
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| E35
| 3
| E17
| 5
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 18. NO >>Repair open circuit, short to ground or short to power in harness or connectors.
 4.CHECK COOLING FAN CONTROL MODULE 1 GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Check the continuity between cooling fan control module 1 harness connector and ground.
Cooling fan control module 1
| Ground
| Continuity
| Connector
| Terminal
| E35
| 1
| Ground
| Existed
|
- Also check harness for short to power.
Is the inspection result normal?
YES >>GO TO 5. NO >>Repair open circuit or short to power in harness or connectors.
 5.CHECK COOLING FAN CONTROL MODULE 1 CIRCUIT FOR OPEN AND SHORT
- Disconnect IPDM E/R harness connector.
- Check the continuity between cooling fan control module 1 harness connector and IPDM E/R harness connector.
Cooling fan control module 1
| IPDM E/R
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| E35
| 2
| E9
| 97
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 6. NO >>Repair open circuit, short to ground or short to power in harness or connectors.
 6.CHECK COOLING FAN CONTROL MODULE 1 OUTPUT SIGNAL CIRCUIT
- Reconnect all harness connectors disconnected.
- Disconnect cooling fan control module 1 harness connectors.
- Turn ignition switch ON.
- Check the voltage between cooling fan control module 1 terminals and ground.
Cooling fan control module 1
| Ground
| Voltage
| Connector
| Terminal
| E301
| 4
| Ground
| Battery voltage
| E302
| 6
|
Is the inspection result normal?
YES >>GO TO 7. NO >>Replace cooling fan control module 1.
 7.CHECK COOLING FAN MOTOR 1
 8.CHECK COOLING FAN CONTROL MODULE 2 POWER SUPPLY CIRCUIT-I
- Turn ignition switch OFF.
- Disconnect cooling fan control module 2 harness connector.
- Turn ignition switch ON.
- Check the voltage between cooling fan control module 2 harness connector and ground.
Cooling fan control module 2
| Ground
| Voltage
| Connector
| Terminal
| E37
| 3
| Ground
| Battery voltage
|
Is the inspection result normal?
YES >>GO TO 9. NO >>GO TO 13.
 9.CHECK COOLING FAN CONTROL MODULE 2 GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Check the continuity between cooling fan control module 2 harness connector and ground.
Cooling fan control module 2
| Ground
| Continuity
| Connector
| Terminal
| E37
| 1
| Ground
| Existed
|
- Also check harness for short to power.
Is the inspection result normal?
YES >>GO TO 10. NO >>Repair open circuit or short to power in harness or connectors.
 10.CHECK COOLING FAN CONTROL MODULE 2 CIRCUIT FOR OPEN AND SHORT
- Disconnect IPDM E/R harness connector.
- Check the continuity between cooling fan control module 2 harness connector and IPDM E/R harness connector.
Cooling fan control module 2
| IPDM E/R
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| E37
| 2
| E9
| 97
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 11. NO >>Repair open circuit, short to ground or short to power in harness or connectors.
 11.CHECK COOLING FAN CONTROL MODULE 2 OUTPUT SIGNAL CIRCUIT
- Reconnect all harness connectors disconnected.
- Disconnect cooling fan control module 2 harness connectors.
- Turn ignition switch ON.
- Check the voltage between cooling fan control module 2 terminals and ground.
Cooling fan control module 2
| Ground
| Voltage
| Connector
| Terminal
| E303
| 4
| Ground
| Battery voltage
| E304
| 6
|
Is the inspection result normal?
YES >>GO TO 12. NO >>Replace cooling fan control module 2.
 12.CHECK COOLING FAN MOTOR 2
 13.CHECK COOLING FAN RELAY 2 POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect cooling fan relay 2.
- Turn ignition switch ON.
- Check the voltage between cooling fan relay 2 harness connector and ground.
Cooling fan relay 2
| Ground
| Voltage
| Connector
| Terminal
| E19
| 2
| Ground
| Battery voltage
| 3
|
Is the inspection result normal?
YES >>GO TO 15. NO >>GO TO 14.
 14.DETECT MALFUNCTIONING PART
Check the following. - 50A fusible link (letter M)
- Harness for open or short between cooling fan relay 2 and battery
- Harness for open or short between cooling fan relay 1 and cooling fan relay 2
>>Repair open circuit, short to ground or short to power in harness or connectors.
 15.CHECK COOLING FAN RELAY 2 GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Check the continuity between cooling fan relay 2 harness connector and ground.
Cooling fan relay 2
| Ground
| Continuity
| Connector
| Terminal
| E17
| 1
| Ground
| Existed
|
- Also check harness for short power.
Is the inspection result normal?
YES >>GO TO 16. NO >>Repair open circuit or short to power in harness or connectors.
 16.CHECK COOLING FAN CONTROL MODULE 2 POWER SUPPLY CIRCUIT-II
- Check the voltage between cooling fan relay 2 harness connector and cooling fan control module 2 harness connector.
Cooling fan relay 2
| Cooling fan control module 2
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| E19
| 5
| E37
| 3
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 17. NO >>Repair open circuit, short to ground or short to power in harness or connectors.
 17.CHECK COOLING FAN RELAY 2
 18.CHECK INTERMITTENT INCIDENT
 19.CHECK COOLING FAN RELAY 1 POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect cooling fan relay 1.
- Check the voltage between cooling fan relay 1 harness connector and ground.
Cooling fan relay 1
| Ground
| Voltage
| Connector
| Terminal
| E17
| 2
| Ground
| Battery voltage
| 3
|
Is the inspection result normal?
YES >>GO TO 21. NO >>GO TO 20.
 20.DETECT MALFUNCTIONING PART
Check the following. - 50A fusible link (letter F)
- Harness for open or short between cooling fan relay 1 and battery
>>Repair open circuit, short to ground or short to power in harness or connectors.
 21.CHECK COOLING FAN RELAY 1 GROUND CIRCUIT FOR OPEN AND SHORT
- Disconnect IPDM E/R harness connector.
- Check the continuity between cooling fan relay 1 harness connector and IPDM E/R harness connector.
Cooling fan relay 1
| IPDM E/R
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| E17
| 1
| E6
| 42
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 22. NO >>Repair open circuit, short to ground or short to power in harness or connectors.
 22.CHECK COOLING FAN CONTROL MODULE 1 POWER SUPPLY CIRCUIT-II
- Disconnect cooling fan control module 1 harness connector.
- Check the continuity between cooling fan relay 1 harness connector and control module 1 harness connector.
Cooling fan relay 1
| Cooling fan control module 1
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| E17
| 5
| E35
| 3
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 23. NO >>Repair open circuit, short to ground or short to power in harness or connectors.
 23.CHECK IPDM E/R GROUND CIRCUIT FOR OPEN AND SHORT
- Disconnect IPDM E/R harness connector.
- Check the continuity between IPDM E/R harness connector and ground.
IPDM E/R
| Ground
| Continuity
| Connector
| Terminal
| E5
| 12
| Ground
| Existed
| E6
| 41
|
- Also check harness for short to power.
Is the inspection result normal?
YES >>GO TO 24. NO >>Repair open circuit or short to power in harness or connectors.
 24.CHECK COOLING FAN CONTROL MODULE 1 CIRCUIT FOR OPEN AND SHORT
- Check the continuity between IPDM E/R harness connector and cooling fan control module 1 harness connector.
IPDM E/R
| Cooling fan control module 1
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| E9
| 97
| E35
| 2
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 25. NO >>Repair open circuit, short to ground or short to power in harness or connectors.
 25.CHECK COOLING FAN RELAY 1
 26.CHECK INTERMITTENT INCIDENT
Perform 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.
|