Diagnosis Procedure

INTAKE DOOR MOTOR


Description


COMPONENT DESCRIPTION





- The intake door motor (1) is installed to A/C unit assembly.

Arrow Indicates : Vehicle front

- The A/C auto amp. sends the control signal to Intake door motor.
When intake door motor receives the control signal, intake door is moved to appropriate position by PBR (Potentio Balance Resistor) opening angle indication signal.





Intake door motor circuit





INTAKE DOOR MOTOR


Diagnosis Procedure


POWER SUPPLY CIRCUIT
1.CHECK INTAKE DOOR MOTOR DRIVE SIGNAL
1. Turn the ignition switch ON.
2. Check voltage between intake door motor harness connector and the ground when intake switch is operated.





Is inspection result normal?
YES - GO TO 4.
NO - GO TO 2.
2.CHECK CONTINUITY BETWEEN A/C AUTO AMP. AND INTAKE DOOR MOTOR
1. Turn the ignition switch OFF.
2. Disconnect the A/C auto amp. connector.
3. Disconnect the intake door motor connector.
4. Check continuity between A/C auto amp. harness connector and intake door motor harness connector.





Is inspection result normal?
YES - GO TO 3.
NO - Repair the harnesses or connectors.
3.CHECK CONTINUITY BETWEEN INTAKE DOOR MOTOR AND GROUND
Check continuity between intake door motor harness connector and the ground.





Is inspection result normal?
YES - Replace the A/C auto amp.
NO - Repair the harnesses or connectors.
4.CHECK INTAKE DOOR MOTOR
Perform the intake door motor component inspection. Component Inspection.
Is inspection result normal?
YES - Replace the A/C auto amp.
NO - Replace the intake door motor.

PBR CIRCUIT
1.CHECK POWER SUPPLY OF INTAKE DOOR MOTOR PBR
1. Turn the ignition switch ON.
2. Check voltage between intake door motor harness connector and the ground.





Is inspection result normal?
YES - GO TO 4.
NO - GO TO 2.
2.CHECK CONTINUITY BETWEEN INTAKE DOOR MOTOR AND A/C AUTO AMP.-1
1. Turn the ignition switch OFF.
2. Disconnect the intake door motor connector.
3. Disconnect the A/C auto amp. connector.
4. Check continuity between intake door motor harness connector and A/C auto amp. harness connector.





Is inspection result normal?
YES - GO TO 3.
NO - Repair the harnesses or connectors.
3.CHECK CONTINUITY INTAKE DOOR MOTOR AND GROUND-1
Check continuity between intake door motor and the ground.





Is inspection result normal?
YES - Replace the A/C auto amp.
NO - Repair the harnesses or connectors.
4.CHECK INTAKE DOOR MOTOR PBR GROUND
1. Turn the ignition switch OFF.
2. Disconnect the A/C auto amp. connector.
3. Check continuity between intake door motor harness connector and the ground.





Is inspection result normal?
YES - GO TO 5.
NO - Repair the harnesses or connectors.
5.CHECK INTAKE DOOR MOTOR PBR FEEDBACK SIGNAL
1. Connect the A/C auto amp. connector.
2. Connect the intake door motor connector.
3. Turn the ignition switch ON.
4. Check voltage between A/C auto amp. and the ground when intake switch is operated.





Is inspection result normal?
YES - Replace the A/C auto amp.
NO - GO TO 6.
6.CHECK CONTINUITY INTAKE DOOR MOTOR AND A/C AUTO AMP.-2
1. Turn the ignition switch OFF.
2. Disconnect the A/C auto amp. connector.
3. Disconnect the intake door motor connector.
4. Check continuity between intake door motor and A/C auto amp.





Is inspection result normal?
YES - GO TO 7.
NO - Repair the harnesses or connectors.
7.CHECK CONTINUITY INTAKE DOOR MOTOR AND GROUND-2
Check continuity between intake door motor harness connector and the ground.





Is inspection result normal?
YES - Replace the intake door motor.
NO - Repair the harnesses or connectors.