Nissan Juke Service and Repair Manual : Blower fan on signal

Component Function Check

1.CHECK BLOWER FAN ON SIGNAL

1. Turn ignition switch ON.With CONSULT-III


1. Turn ignition switch ON.

2. Select “AIR CONDITIONER” of “BCM” using CONSULT-III.

3. Select “FAN ON SIG” in “DATA MONITOR” mode.

4. Check blower fan ON signal when the fan switch is operated.

Is the inspection result normal?


Is the inspection result normal? YES >> INSPECTION END

NO >> Refer to HAC-168, "Diagnosis Procedure".

Diagnosis Procedure

1.CHECK BLOWER FAN ON SIGNAL

1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. harness connector.

3. Turn ignition switch ON.

4. Check output waveform between A/C auto amp. and ground with using oscilloscope.

Is the inspection result normal?


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

NO >> GO TO 2.

2.CHECK BLOWER FAN ON SIGNAL CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect BCM connector.

3. Check continuity A/C auto amp. harness connector and BCM harness connector.

Is the inspection result normal?


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

NO >> Repair harness or connector.

3.CHECK BLOWER FAN ON SIGNAL CIRCUIT FOR SHORT

Check continuity between A/C auto amp. harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> Replace BCM. Refer to BCS-93, "Removal and Installation" (with Intelligent Key) or BCS-161, "Removal and Installation" (without Intelligent Key).

NO >> Repair harness or connector.

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