Inspection Procedure 6

INSPECTION PROCEDURE 6: Condenser Fan does not Operate
Radiator Fan and Condenser Fan Drive

CIRCUIT OPERATION
^ The fan control module is powered from fusible link number 2.
^ The ECM or 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 , output shaft speed sensor and engine coolant temperature sensor. The ECM or 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 condenser fan motor or of the fan control module.

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

DIAGNOSIS

STEP 1. Check the condenser fan motor.
Refer to Condenser and Condenser Fan Motor.

Q: Is the condenser fan in good condition?
YES: Go to Step 2.
NO: Replace the condenser fan motor. 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. Go to Step 3.

STEP 3. Retest the system.
Q: Does the condenser fan operate correctly?
YES: The procedure is complete.
NO: Return to Step 1.