B2661

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR





DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1. Turn ignition switch ON.
2. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT-III.
3. Check DTC.
Is DTC detected?
YES - SEE 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. Door Motor.
Is the inspection result normal?
YES - Replace upper ventilator door motor. 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.. Service and Repair.
NO - Repair harness or connector.