Diagnosis Procedure

BLOWER MOTOR


Description


COMPONENT DESCRIPTION

Blower Motor





- The blower motor is installed in the RH side of A/C unit assembly.
- The blower motor adopts the forcible air cooling system and onetouch installation system without any screws.

Blower Fan Resistor





- Compact and lightweight resistor is adopted with outstanding ventilation.
- Temperature fuse is installed to protects the blower motor circuit.





BLOWER MOTOR


Diagnosis Procedure

1.CHECK FUSE
Check 15A fuses [Nos. 15 and 17, located in the fuse block (J/B)].

NOTE:
Diagrams.
Is the inspection result normal?
YES - GO TO 2.
NO - Replace fuse after repairing the applicable circuit.
2.CHECK POWER SUPPLY FOR BLOWER MOTOR
1. Turn the ignition switch OFF.
2. Disconnect the blower motor connector.
3. Turn the ignition switch ON.
4. Check voltage between blower motor harness connector and the ground.





Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 4.
3.CHECK BLOWER RELAY
1. Turn the ignition switch OFF.
2. Perform the component inspection of blower motor relay. Component Inspection.
Is the inspection result normal?
YES - Replace the harness or connector between blower motor and fuse.
NO - Replace the blower relay.
4.CHECK FAN SWITCH GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the fan switch connector.
3. Check continuity between fan switch harness connector and the ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair the harness or connector.
5.CHECK CONTINUITY BETWEEN FAN SWITCH AND BLOWER MOTOR
Check continuity fan switch harness connector and blower motor harness connector.





Is the inspection result normal?
YES - GO TO 6.
NO - Repair the harness or connector.
6.CHECK VOLTAGE BETWEEN BLOWER FAN RESISTOR AND GROUND
1. Disconnect the blower fan resistor connector.
2. Turn the ignition switch ON.
3. Check voltage between blower fan resistor harness connector and the ground.





Is the inspection result normal?
YES - GO TO 7.
NO - Repair the harness or connector between blower fan resistor and blower motor.
7.CHECK BLOWER FAN RESISTOR
1. Turn the ignition switch OFF.
2. Perform the component inspection of blower fan resistor. Component Inspection.
Is the inspection result normal?
YES - GO TO 8.
NO - Replace the blower fan resistor.
8.CHECK CIRCUIT CONTINUITY BETWEEN FAN SWITCH AND BLOWER FAN RESISTOR
Check continuity between fan switch harness connector and blower fan resistor.





Is the inspection result normal?
YES - GO TO 9.
NO - Repair the harness or connector.
9.CHECK FAN SWITCH
Perform the component inspection of fan switch. Component Inspection.
Is the inspection result normal?
YES - Replace the blower motor.
NO - Replace the fan switch (A/C control).