Manual Air Conditioning
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 one touch 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.
Diagnosis Procedure
1. CHECK FUSE
Check 15A fuses [Nos. 15 and 17, located in the fuse block (J/B)].
NOTE:
Fuse Block - Junction Box (J/B).
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. .
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. .
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. .
Is the inspection result normal?
YES- Replace the blower motor.
NO- Replace the fan switch (A/C control).
Component Inspection
BLOWER MOTOR
1. CHECK BLOWER MOTOR
1.Remove the blower motor. Exploded View.
2.Check that there is not any mixing foreign object in the blower motor.
Is the inspection result normal?
YES- GO TO 2.
NO- Replace the blower motor.
2. CHECK BLOWER MOTOR
Check that there is not breakage or damage in the blower motor.
Is the inspection result normal?
YES- GO TO 3.
NO- Replace the blower motor.
3. CHECK BLOWER MOTOR
Check that the blower motor turns smoothly.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace the blower motor.
BLOWER MOTOR RELAY
1. CHECK BLOWER MOTOR
1.Remove the blower motor relay. Fuse Block - Junction Box (J/B).
2.Check the continuity between the blower motor relay terminal 3
and 5 when the voltage is supplied between terminal 1 and 2.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace the blower motor relay.
BLOWER FAN RESISTOR
1. CHECK BLOWER MOTOR
1.Turn the ignition switch OFF.
2.Disconnect the blower fan resistor connector.
3.Check the resistance between blower fan resistor terminals. Refer to the applicable table for the normal value.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace the blower fan resistor.
FAN SWITCH
1. CHECK FAN SWITCH
1.Turn the ignition switch OFF.
2.Disconnect the fan switch connector.
3.Check the fan switch circuit continuity.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace the fan switch (A/C control).