For Mexico

ELECTRICALLY-CONTROLLED COOLING FAN COUPLING

Component Function Check


1. CHECK COOLING FAN FUNCTION

WITH CONSULT
1.Start the engine.
2.Perform "FAN DUTY CONTROL" in "ACTIVE TEST" mode with CONSULT.
3.Check that cooling fan speed varies according to the percentage.
NOTE:
Speed changes gradually as the percentage changes.
WITHOUT CONSULT
1.Start the engine and warm up the engine until engine coolant temperature reaches at least 98�C (209�F).
2.Check that cooling fan speed increase.
Is the inspection result normal?
YES- INSPECTION END
NO- Proceed to .


Diagnosis Procedure


1. CHECK DRIVE BELT

1.Turn ignition switch OFF.
2.Check that the drive belt is not broken.
Is inspection result normal?
YES- GO TO 2.
NO- Replace drive belt.

2. CHECK ELECTRICALLY-CONTROLLED COOLING FAN COUPLING POWER SUPPLY

1.Disconnect electrically-controlled cooling fan coupling harness connector.
2.Turn ignition switch ON.
3.Check the voltage between electrically-controlled cooling fan coupling harness connector and ground.





Is inspection result normal?
YES- GO TO 3.
NO- Perform trouble diagnosis for power supply circuit.

3. CHECK ELECTRICALLY-CONTROLLED COOLING FAN COUPLING GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Check the continuity between electrically-controlled cooling fan coupling harness connector and ground.





Is inspection result normal?
YES- GO TO 4.
NO- Repair or replace error-detected parts.

4. CHECK ELECTRICALLY-CONTROLLED COOLING FAN COUPLING CONTROL SIGNAL

WITH CONSULT
1.Start the engine.
2.Perform "FAN DUTY CONTROL" in "ACTIVE TEST" mode of "ECM" with CONSULT.
3.Set the Duty value to 100%.
4.Check the voltage between electrically-controlled cooling fan coupling harness connector and ground.

CAUTION:
Wait for 1 minute or more to measure.





WITHOUT CONSULT
1.Start the engine and warm up the engine until engine coolant temperature reaches at least 98�C (209�F).
2.Check the voltage between electrically-controlled cooling fan coupling harness connector and ground.

CAUTION:
Wait for 1 minute or more to measure.





Is the inspection result normal?
YES- GO TO 7.
NO- GO TO 5.

5. CHECK ELECTRICALLY-CONTROLLED COOLING FAN COUPLING CONTROL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect IPDM E/R harness connector.
3.Check the continuity between electrically-controlled cooling fan coupling harness connector and IPDM E/
R harness connector.





4.Also check harness for short to power.
Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace error-detected parts.

6. CHECK CAN COMMUNICATION

Trouble Diagnosis Flow Chart.
Is inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Repair or Replace error-detected parts.

7. CHECK COOLING FAN SPEED SENSOR

For Mexico.
Is inspection result normal?
YES- Replace electrically-controlled cooling fan coupling. Removal and Installation.
NO- Repair or replace error-detected parts.