Nissan Juke Service and Repair Manual : B2636, B2637, B2638, B2639, B2654, B2655 mode door motor

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.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 >> Refer to HAC-157, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK MODE DOOR MOTOR POWER SUPPLY

1. Turn ignition switch ON.

2. Check voltage between mode door motor harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 2.

NO >> GO TO 5.

2.CHECK MODE DOOR MOTOR GROUND CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect mode door motor and A/C auto amp. connector.

3. Check continuity between mode door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 3.

NO >> Repair harness or connector.

3.CHECK MODE DOOR MOTOR LIN SIGNAL

1. Connect mode door motor and A/C auto amp. connector.

2. Turn ignition switch ON.

3. Confirm output waveform between mode door motor harness connector and ground using oscilloscope.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 4.

NO >> GO TO 6.

4.CHECK INSTALLATION OF MODE DOOR MOTOR

Check mode door motor is properly installed. Refer to HAC-195, "Exploded View".

Is the inspection result normal? YES >> Replace mode door motor. Refer to HAC-197, "MODE DOOR MOTOR : Removal and Installation".

NO >> Repair or replace malfunctioning part.

5.CHECK MODE DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect mode door motor and A/C auto amp. connector.

3. Check continuity between mode door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?


Is the inspection result normal? YES >> Replace A/C auto amp. Refer to HAC-188, "Removal and Installation".

NO >> Repair harness or connector.

6.CHECK MODE DOOR MOTOR LIN SIGNAL CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect mode door motor and A/C auto amp. connector.

3. Check continuity between mode door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?


Is the inspection result normal? YES >> Replace A/C auto amp. Refer to HAC-188, "Removal and Installation".

NO >> Repair harness or connector.

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