Nissan Quest E52. Instruction — part 740
HAC-90
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
A/C AUTO AMP.
A/C AUTO AMP.
Component Function Check
INFOID:0000000009652548
1.
PERFORM SELF-DIAGNOSIS FUNCTION STEP 5-2
1.
Turn ignition switch ON.
2.
Perform self-diagnosis function step 5-2. Erase self diagnosis result. Refer to
.
3.
Turn ignition switch OFF.
4.
Turn ignition switch ON.
5.
Perform self-diagnosis function step 5-2 again. Refer to
HAC-47, "On Board Diagnosis Function"
.
6.
Check self-diagnosis result.
Is “40” displayed?
YES
>> Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009652549
1.
REPLACE FRONT A/C CONTROL (A/C AUTO AMP.)
Replace front A/C control (A/C auto amp.). Refer to
HAC-143, "Removal and Installation"
>> INSPECTION END
REAR A/C CONTROL COMMUNICATION SIGNAL
HAC-91
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
REAR A/C CONTROL COMMUNICATION SIGNAL
Diagnosis Procedure
INFOID:0000000009652550
1.
CHECK SYMPTOM
Check symptom (A or B).
Which symptom is detected?
A
>> GO TO 2.
B
>> GO TO 5.
2.
CHECK COMMUNICATION SIGNAL (REAR A/C CONTROL
→
A/C AUTO AMP.) CIRCUIT FOR OUTPUT
SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect rear A/C control connector.
3.
Turn ignition switch ON.
4.
Check voltage between rear A/C control harness connector and ground.
Is the inspection result normal?
YES
>> Replace rear A/C control. Refer to
HAC-144, "Removal and Installation"
.
NO
>> GO TO 3.
3.
CHECK COMMUNICATION SIGNAL (REAR A/C CONTROL
→
A/C AUTO AMP.) CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Check continuity between rear A/C control harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK COMMUNICATION SIGNAL (REAR A/C CONTROL
→
A/C AUTO AMP.) CIRCUIT FOR SHORT
Check continuity between rear A/C control harness connector and ground.
Symptom
A
Rear air conditioning
cannot be controlled
by rear A/C control.
Operation status of rear air conditioning is indicated on rear A/C control display.
B
Operation status of rear air conditioning is not indicated on rear A/C control dis-
play.
+
−
Voltage
(Approx.)
Rear A/C control
Connector
Terminal
R16 (without rear
entertainment)
10
Ground
5 V
R101 (with rear en-
tertainment)
Rear A/C control
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
R16 (without rear
entertainment)
10
M50
33
Existed
R101 (with rear en-
tertainment)
HAC-92
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
REAR A/C CONTROL COMMUNICATION SIGNAL
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.
5.
CHECK COMMUNICATION SIGNAL (A/C AUTO AMP.
→
REAR A/C CONTROL) CIRCUIT FOR OUTPUT
SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Turn ignition switch ON.
4.
Check voltage 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
>> GO TO 6.
6.
CHECK COMMUNICATION SIGNAL (A/C AUTO AMP.
→
REAR A/C CONTROL) CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect rear A/C control connector.
3.
Check continuity between rear A/C control harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair harness or connector.
7.
CHECK COMMUNICATION SIGNAL (A/C AUTO AMP.
→
REAR A/C CONTROL) CIRCUIT FOR SHORT
Check continuity between rear A/C control harness connector and ground.
Is the inspection result normal?
YES
>> Check rear A/C control power supply circuit. Refer to
HAC-88, "REAR A/C CONTROL : Diagnosis
.
Rear A/C control
—
Continuity
Connector
Terminal
R16 (without rear
entertainment)
10
Ground
Not existed
R101 (with rear en-
tertainment)
+
−
Voltage
(Approx.)
A/C auto amp.
Connector
Terminal
M50
32
Ground
5 V
Rear A/C control
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
R16 (without rear
entertainment)
9
M50
32
Existed
R101 (with rear en-
tertainment)
Rear A/C control
—
Continuity
Connector
Terminal
R16 (without rear
entertainment)
9
Ground
Not existed
R101 (with rear en-
tertainment)
REAR A/C CONTROL COMMUNICATION SIGNAL
HAC-93
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
NO
>> Repair harness or connector.
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