Inspection Procedure 5

INSPECTION PROCEDURE 5: Radiator Fan does not Operate

Part 1 Of 2:

Part 2 Of 2:

CIRCUIT OPERATION
^ The fan control module is powered from fusible link number 2.
^ The PCM judges the required revolution speed of radiator fan motor and condenser fan motor using the input signals transmitted from A/C switch, automatic compressor controller, vehicle speed sensor and engine coolant temperature sensor. The PCM activates the fan control module to drive the radiator fan motor and condenser fan motor.

TECHNICAL DESCRIPTION
The cause could be a malfunction of the radiator fan motor or an open circuit between the fan control module and the radiator fan motor.

TROUBLESHOOTING HINTS
^ Malfunction of radiator fan motor
^ Malfunction of fan control module

DIAGNOSIS

STEP 1. Check the radiator fan motor.
Q: Is the radiator fan in good condition?
YES: Go to Step 2.
NO: Replace the radiator fan motor, then go to Step 3.

STEP 2. Check the fan control module.
Q: Is the fan control module in good condition?
YES: Go to Step 3.
NO: Replace the fan control module, then go to Step 3.

STEP 3. Check the symptoms.
Q: Does the radiator fan operate correctly?
YES: The procedure is complete.
NO: Return to Step 1.