INSPECTION PROCEDURE 6: When the A/C is Operating Condenser Fan or Radiator Fan does not Turn.: Diagnosis
- STEP 1. Check the fan control relay continuity. RELAY CHECK
BATTERY VOLTAGE TESTER CONNECTION SPECIFIED CONDITION Not applied 2 - 4 Open circuit - Connect terminal 1 to the positive battery terminal
- Connect terminal 3 to the negative battery terminal
2 - 4 Less than 2 ohms Q: Is the fan control relay continuity in good condition?
YES : Go to Step 2.
NO: Replace the fan control relay. Then go to Step 4.
- STEP 2. Check the condenser fan motor operation < vehicles with 3.0L engine >.
Check to be sure that the condenser fan motor operates when battery voltage is applied to terminal 2 and terminal 1 grounded.
Q: Is the condenser fan motor operating correctly?
YES : Go to Step 3.
NO: Replace the condenser fan motor. Then go to Step 3.
- STEP 3. Measure the fan controller terminal voltage.
Refer to On-vehicle Service - FAN CONTROL CHECK .
Q: Is the fan controller terminal voltage in good condition?
YES : Go to Step 4.
NO: Replace fan controller. Then go to Step 4.
- STEP 4. Retest the system. NOTE: Condenser fan might not operate when there is an air conditioning low load from the air conditioning condenser control, so remove the negative battery terminal and then check the symptoms after 5 minutes since initial start control after reconnection.
Q: Is the condenser fan or radiator fan operating correctly?
YES : The procedure is complete. (If no malfunctions are not found in all steps, an intermittent malfunction is suspected. Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS .)
NO: Go to Step 1.