8. The Rear Heater Air Volume Cannot Be Controlled In Two Steps

The Rear Heater Air Volume cannot be Controlled in Two Steps.

DIAGNOSIS




STEP 1. Check the rear heater switch continuity

Q: Is the rear heater switch normal?

YES: Go to Step 2.

NO: Replace. Then go to Step 3.




STEP 2. Check the resister resistance value Use an ohmmeter to check the resistance between terminals number 3 and 4. Check that the measured value is at the standard value.

Standard value: 3.9 Ohms

Q: Is the resistance value correctly?

YES: This diagnosis is complete. (If no malfunctions are not found in all steps, an intermittent malfunction is suspected. Refer to How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction.)

NO: Replace. Then go to Step 3.

STEP 3. Check symptoms.

NOTE: The 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 operating correctly?

YES: This diagnosis is complete. (If no malfunctions are not found in all steps, an intermittent malfunction is suspected. Refer to How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction.)

NO: Go to Step 1.