Nissan Juke (2016 year). Service Repair Manual — part 430
A/C ON SIGNAL
HAC-77
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
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A/C ON SIGNAL
Component Function Check
INFOID:0000000012200065
1.
CHECK A/C ON SIGNAL
With CONSULT
1. Turn ignition switch ON.
2. Operate blower motor.
3. Select “AIR CONDITIONER” of “BCM” using CONSULT.
4. Select “AIR COND SW” in “DATA MONITOR” mode.
5. Check A/C ON signal when the A/C switch is operated.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000012200066
1.
CHECK A/C ON SIGNAL
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Turn ignition switch ON.
4. Check output waveform between A/C auto amp. harness connector and ground with using oscilloscope.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-93, "Removal and Installation"
NO
>> GO TO 2.
2.
CHECK A/C ON SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between A/C auto amp. harness connector and BCM harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
Monitor item
Condition
Status
AIR COND SW
A/C switch
ON (A/C indicator:
ON)
On
OFF (A/C indicator:
OFF)
Off
+
−
Output waveform
A/C auto amp.
Connector
Terminal
M50
15
Ground
JPMIA0012GB
A/C auto amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M50
15
M68
27
Existed
Revision: November 2015
2016 JUKE
HAC-78
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
A/C ON SIGNAL
NO
>> Repair harness or connector.
3.
CHECK A/C 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-94, "Removal and Installation"
NO
>> Repair harness or connector.
A/C auto amp.
—
Continuity
Connector
Terminal
M50
15
Ground
Not existed
Revision: November 2015
2016 JUKE
BLOWER FAN ON SIGNAL
HAC-79
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
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BLOWER FAN ON SIGNAL
Component Function Check
INFOID:0000000012200067
1.
CHECK BLOWER FAN ON SIGNAL
With CONSULT
1. Turn ignition switch ON.
2. Select “AIR CONDITIONER” of “BCM” using CONSULT.
3. Select “FAN ON SIG” in “DATA MONITOR” mode.
4. Check blower fan ON signal when the fan control dial is operated.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000012200068
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-93, "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
Monitor item
Condition
Status
FAN ON SIG
Blower motor
ON
On
OFF
OFF
+
−
Output waveform
A/C auto amp.
Connector
Terminal
M50
14
Ground
PKIB4960J
A/C auto amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M50
14
M68
28
Existed
Revision: November 2015
2016 JUKE
HAC-80
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
BLOWER FAN ON SIGNAL
Check continuity between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-94, "Removal and Installation"
NO
>> Repair harness or connector.
A/C auto amp.
—
Continuity
Connector
Terminal
M50
14
Ground
Not existed
Revision: November 2015
2016 JUKE
BLOWER MOTOR
HAC-81
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
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BLOWER MOTOR
Diagnosis Procedure
INFOID:0000000012200069
1.
CHECK FUSE
1. Turn ignition switch OFF.
2. Check following fuses.
-
10A fuse [No. 15, located in fuse block (J/B)]
-
15A fuses [Nos. 14 and 16, located in fuse block (J/B)]
NOTE:
PG-80, "Fuse, Connector and Terminal Arrangement"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.
CHECK BLOWER MOTOR POWER SUPPLY
1. Disconnect blower motor connector.
2. Turn ignition switch ON.
3. Check voltage between blower motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK BLOWER RELAY
1. Turn ignition switch OFF.
2. Check blower relay. Refer to
HAC-84, "Component Inspection (Blower Relay)"
.
Is the inspection result normal?
YES
>> Repair harness or connector between blower motor and fuse.
NO
>> Replace blower relay.
4.
CHECK BLOWER MOTOR CONTROL CIRCUIT
1. Turn ignition switch OFF.
2. Connect blower motor connector.
3. Disconnect power transistor connector.
4. Turn ignition switch ON.
5. Check voltage between power transistor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
CHECK BLOWER MOTOR CONTROL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect blower motor connector.
3. Check continuity between power transistor harness connector and blower motor harness connector.
+
−
Voltage
(Approx.)
Blower motor
Connector
Terminal
M39
1
Ground
Battery voltage
+
−
Voltage
(Approx.)
Power transistor
Connector
Terminal
M344
1
Ground
Battery voltage
Revision: November 2015
2016 JUKE
HAC-82
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
BLOWER MOTOR
Is the inspection result normal?
YES
>> Replace blower motor. Refer to
VTL-14, "Removal and Installation"
.
NO
>> Repair harness or connector.
6.
CHECK A/C AUTO AMP. IGNITION POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp.
3. Turn ignition switch ON.
4. Check voltage between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair harness or connector between A/C auto amp. and fuse.
7.
CHECK POWER TRANSISTOR IGNITION POWER SUPPLY
Check voltage between power transistor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair harness or connector between power transistor and fuse.
8.
CHECK POWER TRANSISTOR GROUND CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Check continuity between power transistor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair harness or connector.
9.
CHECK POWER TRANSISTOR CONTROL SIGNAL
1. Connect blower motor connector and A/C auto amp. connector.
2. Turn ignition switch ON.
3. Set air outlet to VENT.
4. Change fan speed from 1st – 7th, and check duty ratios between blower motor harness connector and
ground by using an oscilloscope.
NOTE:
Calculate the drive signal duty ratio as shown in the figure.
T2 = Approx. 1.6 ms
Power transistor
Blower motor
Continuity
Connector
Terminal
Connector
Terminal
M344
1
M39
2
Existed
+
−
Voltage
(Approx.)
A/C auto amp.
Connector
Terminal
M50
21
Ground
Battery voltage
+
−
Voltage
(Approx.)
Power transistor
Connector
Terminal
M344
4
Ground
Battery voltage
Power transistor
—
Continuity
Connector
Terminal
M344
3
Ground
Existed
Revision: November 2015
2016 JUKE
BLOWER MOTOR
HAC-83
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
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Is the inspection result normal?
YES
>> Replace power transistor. Refer to
HAC-99, "Removal and Installation"
.
NO
>> GO TO 10.
10.
CHECK POWER TRANSISTOR CONTROL SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect power transistor connector and A/C auto amp. connector.
3. Check continuity between power transistor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Repair harness or connector.
11.
CHECK POWER TRANSISTOR CONTROL SIGNAL CIRCUIT FOR SHORT
Check continuity between power transistor harness connector and ground.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-93, "Removal and Installation"
NO
>> Repair harness or connector.
Component Inspection (Blower Motor)
INFOID:0000000012200070
1.
CHECK BLOWER MOTOR
1. Remove blower motor. Refer to
VTL-14, "Removal and Installation"
2. Check that there is not any mixing foreign object in the blower motor.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace blower motor. Refer to
VTL-14, "Removal and Installation"
.
2.
CHECK BLOWER MOTOR
Check that there is not breakage or damage in the blower motor.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace blower motor. Refer to
VTL-14, "Removal and Installation"
.
+
−
Condition
Duty ratio
(Approx.)
Output waveform
Power transistor
Connector
Terminal
Fan speed (manual)
Air outlet: VENT
M344
2
Ground
1st
26%
2nd
34%
3rd
41%
4th
51%
5th
62%
6th
73%
7th
82%
JPIIA1646GB
Power transistor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M344
2
M50
13
Existed
Power transistor
—
Continuity
Connector
Terminal
M344
2
Ground
Not existed
Revision: November 2015
2016 JUKE
HAC-84
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
BLOWER MOTOR
3.
CHECK BLOWER MOTOR
Check that blower motor turns smoothly.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace blower motor. Refer to
VTL-14, "Removal and Installation"
.
Component Inspection (Blower Relay)
INFOID:0000000012200071
1.
CHECK BLOWER RELAY
1. Remove blower relay. Refer to
PG-80, "Fuse, Connector and Terminal Arrangement"
2. Check continuity between blower relay terminal 3 and 5 when
the voltage is supplied between terminal 1 and 2.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace blower relay.
Terminal
Voltage
Continuity
3
5
ON
Existed
OFF
Not existed
JSIIA1551ZZ
Revision: November 2015
2016 JUKE
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