B2661

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT
1.Turn ignition switch ON.
2.Select "Self Diagnostic Result" mode of "HVAC" using CONSULT.
3.Check DTC.
Is DTC detected?
YES- Refer to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK UPPER VENTILATOR DOOR MOTOR COMMUNICATION SIGNAL

1.Turn ignition switch ON.
2.Check output waveform between upper vent door motor harness connector and ground with the oscilloscope.





Is the inspection result normal?
YES- GO TO 2.
NO- GO TO 3.

2. CHECK INSTALLATION OF UPPER VENTILATOR DOOR MOTOR

Check upper ventilator door motor is properly installed. Refer to "Exploded View" Door Motor.
Is the inspection result normal?
YES- Replace upper ventilator door motor. Refer to "UPPER VENTILATOR DOOR MOTOR : Removal and Installation" Upper Ventilator Door Motor.
NO- Repair or replace malfunctioning part.

3. CHECK UPPER VENTILATOR DOOR MOTOR COMMUNICATION SIGNAL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect upper vent door motor and A/C auto amp. connector.
3.Check continuity between upper vent door motor harness connector and A/C auto amp. harness connector.





Is the inspection result normal?
YES- Replace A/C auto amp. Refer to "Removal and Installation" Service and Repair.
NO- Repair harness or connector.