Automatic Air Conditioner

BLOWER MOTOR


Component Function Check


Inspection FLOW
1. CONFIRM SYMPTOM BY PERFORMING OPERATION CHECK - FRONT BLOWER
1. Rotate the blower control dial clockwise. Blower should operate.
2. Rotate the blower control dial clockwise, and continue checking blower speed until all speeds are checked.
Can a symptom be duplicated?
YES >> GO TO 3
NO >> GO TO 2
2. PERFORM COMPLETE OPERATIONAL CHECK
Perform a complete operational check and check for any symptoms. Refer to Symptom Matrix Chart.
Is the Inspection result normal?
YES >> Refer to Symptom Matrix Chart.
NO >> System OK.
3. CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 4
4. CHECK ENGINE COOLANT TEMPERATURE.
Check engine coolant temperature.
Is engine coolant temperature below 56�C (133�F)?
YES >> GO TO 5
NO >> Blower motor operation is normal.
5. CHECK BLOWER MOTOR STARTING SPEED.
Check blower motor starting blower speed control.
Is blower motor operation under starting blower speed control?
YES >> GO TO 6
NO >> Check blower motor circuit. Refer to Automatic Air Conditioner.
6. CHECK AMBIENT SENSOR CIRCUIT
Perform diagnostic procedure for the mode door motor. Refer to Automatic Air Conditioner.
Is the Inspection result normal?
YES >> GO TO 7
NO >> Repair as necessary.
7. CHECK IN-VEHICLE SENSOR CIRCUIT
Perform diagnostic procedure for the in-vehicle sensor circuit. Refer to Diagnosis Procedure.
Is the Inspection result normal?
YES >> GO TO 8
NO >> Repair as necessary.
8. CHECK SUNLOAD SENSOR CIRCUIT
Perform diagnostic procedure for the sunload sensor circuit. Refer to Diagnosis Procedure.
Is the Inspection result normal?
YES >> GO TO 9
NO >> Repair as necessary.
9. CHECK INTAKE SENSOR CIRCUIT
Perform diagnostic procedure for the intake sensor circuit. Refer to Diagnosis Procedure.
Is the Inspection result normal?
YES >> GO TO 10
NO >> Repair as necessary.
10. RECHECK FOR SYMPTOMS
Perform a complete operational check and check for any symptoms. Refer to Automatic Air Conditioner.
Does another symptom exist?
YES >> Repair as necessary.
NO >> Replace front air control. Refer to Service and Repair.