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:
Service
• Never use electrical test equipment to check SRS circuits unless instructed
to in this Service Manual.
• Before servicing the SRS, turn ignition switch OFF, disconnect battery
negative terminal and wait at least 3
minutes.
For approximately 3 minutes after the battery negative terminal ar ...
Combination meter
Reference Value
VALUES ON THE DIAGNOSIS TOOL
NOTE:
Some items are not available according to vehicle specification.
TERMINAL LAYOUT
PHYSICAL VALUES
Fail-Safe
FAIL-SAFE
The combination meter activates the fail-safe control if CAN communication
with each unit is malfuncti ...
Spark plug
Removal and Installation
REMOVAL
1. Remove ignition coil. Refer to EM-178, "Exploded View".
2. Remove spark plug with a spark plug wrench (commercial service
tool).
a : 14 mm (0.55 in)
CAUTION:
Never drop or shock spark plug.
INSTALLATION
Install in the reverse order of removal ...
