Nissan Quest E52. Instruction — part 747
HAC-118
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
DOOR MOTOR
DOOR MOTOR
Diagnosis Procedure
INFOID:0000000009652567
NOTE:
Check this circuit when all door motor system malfunction are detected.
1.
CHECK DOOR MOTOR POWER SUPPLY
1.
Turn ignition switch ON.
2.
Check voltage between intake door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 7.
2.
CHECK DOOR MOTOR GROUND CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect intake door motor and A/C auto amp. connector.
3.
Check continuity between intake door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK DOOR MOTOR LAN SIGNAL
1.
Connect A/C auto amp. and intake door motor connector.
2.
Turn ignition switch ON.
3.
Confirm output waveform between A/C auto amp. harness connector and ground using oscilloscope.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 6.
4.
CHECK DOOR MOTOR LAN SIGNAL CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. and intake door motor connector.
3.
Check continuity between A/C auto amp. harness connector and intake door motor harness connector.
+
−
Voltage
Intake door motor
Connector
Terminal
M304
1
Ground
9.5 – 13.5 V
Intake door motor
—
Continuity
Connector
Terminal
M304
2
Ground
Existed
+
−
Output waveform
A/C auto amp.
Connector
Terminal
M50
5
Ground
SJIA1453J
DOOR MOTOR
HAC-119
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
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M
A
B
HAC
N
O
P
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair harness or connector.
5.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
>> INSPECTION END
6.
CHECK DOOR MOTOR LAN SIGNAL CIRCUIT FOR SHORT
1.
Turn ignition switch OFF.
2.
Disconnect following connectors.
-
A/C auto amp.
-
Front air mix door motor LH
-
Front air mix door motor RH
-
Front mode door motor
-
Intake door motor
-
Rear air mix door motor
-
Rear mode door motor
3.
Check continuity between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES
>> Replace front A/C control (A/C auto amp.). Refer to
HAC-143, "Removal and Installation"
NO
>> Repair harness or connector.
7.
CHECK DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect intake door motor and A/C auto amp. connector.
3.
Check continuity between intake door motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair harness or connector.
8.
CHECK DOOR MOTOR POWER SUPPLY CIRCUIT FOR SHORT
1.
Disconnect following connectors.
-
A/C auto amp.
-
Front air mix door motor LH
-
Front air mix door motor RH
-
Front mode door motor
-
Rear air mix door motor
-
Rear mode door motor
2.
Check continuity between A/C auto amp. harness connector and ground.
A/C auto amp.
Intake door motor
Continuity
Connector
Terminal
Connector
Terminal
M50
5
M304
3
Existed
A/C auto amp.
—
Continuity
Connector
Terminal
M50
5
Ground
Not existed
Intake door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M304
1
M50
4
Existed
HAC-120
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
DOOR MOTOR
Is the inspection result normal?
YES
>> Replace front A/C control (A/C auto amp.). Refer to
HAC-143, "Removal and Installation"
NO
>> Repair harness or connector.
A/C auto amp.
—
Continuity
Connector
Terminal
M50
4
Ground
Not existed
A/C ON SIGNAL
HAC-121
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
A/C ON SIGNAL
Component Function Check
INFOID:0000000009652568
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
HAC-121, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000009652569
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 front A/C control (A/C auto amp.). Refer to
HAC-143, "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
13
Ground
JPMIA0012GB
A/C auto amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M50
13
M121
27
Existed
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