Nissan Juke Service and Repair Manual : Blower fan on signal
Component Function Check
1.CHECK BLOWER FAN ON SIGNAL
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? 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? 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? 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? 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.
A/C on signal
Component Function Check
1.CHECK A/C ON SIGNAL
With CONSULT-III
1. Turn ignition switch ON.
2. Operate blower motor.
3. Select “AIR CONDITIONER” of “BCM” using CONSULT-III.
4. Select “AIR COND S ...
Blower motor
Diagnosis Procedure
1.CHECK SYMPTOM
Check symptom (A, B or C).
Which symptom is detected?
A >>GO TO 2.
B >>GO TO 11.
C >> GO TO 13.
2.CHECK FUSE
1. Turn ignition switch O ...
Other materials:
Door motor
Exploded View
LEFT SIDE
1. A/C unit assembly
2. Intake door lever
3. Intake door link
4. Intake door motor
5. Air mix door motor
6. Air mix door link
7. Max. cool door
8. Upper air mix door lever
9. Air mix door rod
10. Lower air mix door lever
RIGHT SIDE
1. A/C unit assembly ...
Diagnosis and repair work flow
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION ABOUT SYMPTOM
Get the detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurred).
>> GO TO 2.
2.CHECK DTC
1. Check DTC for “ENGINE” and “BCM” usin ...
Take away warning does not operate
Diagnosis Procedure
1.CHECK DTC WITH BCM AND COMBINATION METER
Check that DTC is not detected with BCM and combination meter.
Is the inspection result normal?
YES >> GO TO 2.
NO-1 >> Refer to BCS-67, "DTC Index". (BCM)
NO-2 >> Refer to MWI-36, "DTC Index&qu ...
