BLOWER MOTOR
Component Function Check
Inspection FLOW
- CONFIRM SYMPTOM BY PERFORMING OPERATION CHECK - FRONT BLOWER
- Rotate the blower control dial clockwise. Blower should operate.
- 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
- PERFORM COMPLETE OPERATIONAL CHECK Perform a complete operational check and check for any symptoms. Refer to See: Symptom Related Diagnostic Procedures\Automatic Air Conditioner System\Symptom Matrix Chart.
Is the Inspection result normal?
YES >> Refer to See: Symptom Related Diagnostic Procedures\Automatic Air Conditioner System\Symptom Matrix Chart.
NO >> System OK.
- CHECK FOR SERVICE BULLETINS Check for any service bulletins.
>> GO TO 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.
- 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 See: Diagnosis Procedure\Automatic Air Conditioner.
- CHECK AMBIENT SENSOR CIRCUIT Perform diagnostic procedure for the mode door motor. Refer to See: Mode Door\Automatic Air Conditioner.
Is the Inspection result normal?
YES >> GO TO 7
NO >> Repair as necessary.
- CHECK IN-VEHICLE SENSOR CIRCUIT Perform diagnostic procedure for the in-vehicle sensor circuit. Refer to See: In-Vehicle Sensor\Diagnosis Procedure.
Is the Inspection result normal?
YES >> GO TO 8
NO >> Repair as necessary.
- CHECK SUNLOAD SENSOR CIRCUIT Perform diagnostic procedure for the sunload sensor circuit. Refer to See: Sunload Sensor\Diagnosis Procedure.
Is the Inspection result normal?
YES >> GO TO 9
NO >> Repair as necessary.
- CHECK INTAKE SENSOR CIRCUIT Perform diagnostic procedure for the intake sensor circuit. Refer to See: Intake Sensor\Diagnosis Procedure.
Is the Inspection result normal?
YES >> GO TO 10
NO >> Repair as necessary.
- RECHECK FOR SYMPTOMS Perform a complete operational check and check for any symptoms. Refer to See: Initial Inspection and Diagnostic Overview\Inspection And Adjustment\Description And Conditions\Automatic Air Conditioner.
Does another symptom exist?
YES >> Repair as necessary.
NO >> Replace front air control. Refer to See: Control Module HVAC\Service and Repair.
|