07 - Inspection Procedure

Even when the Rear Heater Switch is Pressed, the Blower Fan does not Turn.

DIAGNOSIS







STEP 1. Check the rear heater relay continuity.

Q: Is there continuity at the rear heater relay?

YES: Go to Step 2.

NO: Replace. Then go to Step 5.







STEP 2. Check the rear blower motor operation.
When battery voltage is applied between the terminals, check that the motor operates. Also, check that there is no abnormal noise.

Q: Is the rear blower motor operating correctly?

YES: Go to Step 3.

NO: Replace. Then go to step 5.




STEP 3. Check the rear heater switch continuity

Q: Is the rear heater switch normal?

YES: Go to Step 4.

NO: Replace. Then go to step 5.




STEP 4. 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 5.

STEP 5. 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.