Nissan Quest E52. Instruction — part 772
HAC-218
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
A/C ON SIGNAL
A/C ON SIGNAL
Component Function Check
INFOID:0000000009652658
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-218, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000009652659
1.
CHECK A/C ON SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect A/C amp. connector.
3.
Turn ignition switch ON.
4.
Check output waveform between A/C amp. harness connector and ground with using oscilloscope.
Is the inspection result normal?
YES
>> Replace front A/C control (A/C amp.). Refer to
HAC-238, "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 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 amp.
Connector
Terminal
M49
13
Ground
JPMIA0012GB
A/C amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M49
13
M121
27
Existed
A/C ON SIGNAL
HAC-219
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
NO
>> Repair harness or connector.
3.
CHECK A/C ON SIGNAL CIRCUIT FOR SHORT
Check continuity between A/C amp. harness connector and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-98, "Removal and Installation"
NO
>> Repair harness or connector.
A/C amp.
—
Continuity
Connector
Terminal
M49
13
Ground
Not existed
HAC-220
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
BLOWER FAN ON SIGNAL
BLOWER FAN ON SIGNAL
Component Function Check
INFOID:0000000009652660
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 switch is operated.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Refer to
HAC-220, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000009652661
1.
CHECK BLOWER FAN ON SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect A/C amp. harness connector.
3.
Turn ignition switch ON.
4.
Check output waveform between A/C amp. and ground with using oscilloscope.
Is the inspection result normal?
YES
>> Replace front A/C control (A/C amp.). Refer to
HAC-238, "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 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
Fan switch
OFF position
Off
Except OFF position
On
+
−
Output waveform
A/C amp.
Connector
Terminal
M49
12
Ground
PKIB4960J
A/C amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M49
12
M121
28
Existed
BLOWER FAN ON SIGNAL
HAC-221
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Check continuity between A/C amp. harness connector and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-98, "Removal and Installation"
NO
>> Repair harness or connector.
A/C amp.
—
Continuity
Connector
Terminal
M49
12
Ground
Not existed
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст