B2664

B2664, B2665 REAR AIR MIX 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 REAR AIR MIX DOOR MOTOR COMMUNICATION SIGNAL

1.Turn ignition switch ON.
2.Check output waveform between rear air mix 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 REAR AIR MIX DOOR MOTOR

Check rear air mix door motor is properly installed. Refer to "Exploded View" Door Motor.
Is the inspection result normal?
YES- Replace rear air mix door motor. Refer to "REAR AIR MIX DOOR MOTOR : Removal and Installation" Rear Air Mix Door Motor.
NO- Repair or replace malfunctioning part.

3. CHECK REAR AIR MIX DOOR MOTOR COMMUNICATION SIGNAL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect rear air mix door motor and A/C auto amp. connector.
3.Check continuity between rear air mix 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.