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:
U1000, U1001 CAN COMM CIRCUIT
Description
CAN (Controller Area Network) is a serial communication line for real time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent error
detection ability. Many electronic
control units are equipped onto a vehicle, and each co ...
P1612 chain of ECM-IMMU
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC P1612 is displayed with DTC U1000 (for BCM), first perform the trouble
diagnosis for DTC U1000.
Refer to BCS-83, "DTC Logic".
• If DTC P1612 is displayed with DTC U1010 (for BCM), first perform the trouble
diagnosis for DTC U1010.
...
Changing engine coolant
Major cooling system repairs should be performed by a NISSAN dealer. The service
procedures can be found in the appropriate NISSAN Service Manual.
Improper servicing can result in reduced heater performance and engine overheating.
WARNING
• To avoid the danger of being scalded, never change the ...
