Diagnosis Procedure

WITH CONSULT-III

1. Start the engine.
2. Perform "FAN DUTY CONTROL" in "ACTIVE TEST" mode with CONSULT-III.
3. Check that cooling fan speed varies according to the percentage.
   NOTE: Speed changes gradually as the percentage changes.

WITHOUT CONSULT-III

1. Stert the engine.
2. Perform IPDM E/R auto active test and check cooling fan operation, refer to "DIAGNOSIS DESCRIPTION ".
3. Check that cooling fan speed increase.
   NOTE: Speed changes gradually when performing the auto active test.

   Is the inspection result normal? 

   YES: GO TO 2.

   NO: Proceed to "DIAGNOSIS PROCEDURE ".

Check cooling system for leakage. Refer to "INSPECTION ".

Is leakage detected? 

YES: GO TO 3.

NO: GO TO  4.

Check the following for leakage.

• Hose
• Radiator
• Water pump

  Repair or replace malfunctioning part.

Check reservoir tank cap. Refer to "RESERVOIR TANK CAP : INSPECTION ".

Is the inspection result normal? 

YES: GO TO 5.

NO: Replace reservoir tank cap.

Check thermostat. Refer to "INSPECTION ".

Is the inspection result normal? 

YES: GO TO 6.

NO: Replace thermostat. Refer to "REMOVAL AND INSTALLATION ".

Refer to "COMPONENT INSPECTION (ENGINE COOLANT TEMPERATURE SENSOR) ".

Is the inspection result normal? 

YES: GO TO 7.

NO: Replace engine coolant temperature sensor. Refer to "EXPLODED VIEW ".

If the cause cannot be isolated, check the "TROUBLESHOOTING CHART ".

INSPECTION END