Nissan Pathfinder. Manual — part 715
POWER SUPPLY AND GROUND CIRCUIT
HAC-121
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK INSTALLATION OF SHUT-OFF DOOR MOTOR
Check shut-off door motor is properly installed. Refer to
Is the inspection result normal?
YES
>> Replace shut-off door motor. Refer to
HAC-165, "REAR SHUT-OFF DOOR MOTOR : Removal
.
NO
>> Repair or replace malfunctioning part.
4.
CHECK SHUT-OFF DOOR MOTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect shut-off door motor connector and A/C auto amp. connector.
3. Check continuity between shut-off door motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-157, "Removal and Installation"
.
NO
>> Repair harness or connector.
REAR A/C CONTROL
REAR A/C CONTROL : Diagnosis Procedure
INFOID:0000000009176862
Regarding Wiring Diagram information, refer to
1.
CHECK FUSE
Check 10A fuse [No. 30, located in the fuse block (J/B)].
NOTE:
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the blown fuse after repairing the affected circuit.
2.
CHECK REAR AIR CONTROL POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect rear air control connector.
3. Turn ignition switch ON.
4. Check voltage between rear air control harness connector and ground.
Is the inspection result normal?
Shut-off door motor
—
Continuity
Connector
Terminal
M12
3
Ground
Yes
Shut-off door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M12
1
M50
17
Yes
+
−
Voltage
(Approx.)
Rear air control
Connector
Terminal
M258
12
Ground
Battery voltage
HAC-122
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
YES
>> GO TO 3.
NO
>> Repair harness or connector between rear air control and fuse block (J/B).
3.
CHECK REAR AIR CONTROL GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between rear air control harness connector and ground.
Is the inspection result normal?
YES
>> Replace rear air control. Refer to
HAC-154, "Removal and Installation - Without Navigation"
.
NO
>> Repair harness or connector.
Rear air control
—
Continuity
Connector
Terminal
M258
1
Ground
Yes
A/C SWITCH ASSEMBLY SIGNAL CIRCUIT
HAC-123
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
A/C SWITCH ASSEMBLY SIGNAL CIRCUIT
Diagnosis Procedure
INFOID:0000000009176863
WITH BASE AUDIO SYSTEM
Regarding Wiring Diagram information, refer to
1.
CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT
1. Using CONSULT, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC No. is displayed in the self-diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
.
Is any DTC No. displayed?
YES
>> Perform diagnosis for the applicable DTC. Refer to
NO
>> GO TO 2.
2.
CHECK TX (A/C SWITCH ASSEMBLY
→ A/C AUTO AMP.) CIRCUIT CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect the A/C switch assembly and the A/C auto amp. connectors.
3. Check continuity between A/C switch assembly harness connector M146 terminal 4 and A/C auto amp.
harness connector M50 terminal 24.
4. Check continuity between A/C switch assembly harness connector M146 terminal 4 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK RX (A/C AUTO AMP.
→ A/C SWITCH ASSEMBLY) CIRCUIT CONTINUITY
1. Disconnect the A/C display unit connector.
2. Check continuity between A/C switch assembly harness connector M146 terminal 3 and A/C auto amp.
harness connector M50 terminal 4.
3. Check continuity between A/C switch assembly harness connector M146 terminal 3 and ground.
Is the inspection result normal?
YES
>> Perform trouble diagnosis for the A/C switch assembly. Refer to
.
A/C switch assembly
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M146
4
M50
24
Yes
A/C switch assembly
—
Continuity
Connector
Terminal
M146
4
Ground
No
A/C switch assembly
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M146
3
M50
4
Yes
A/C switch assembly
—
Continuity
Connector
Terminal
M146
3
Ground
No
HAC-124
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
A/C SWITCH ASSEMBLY SIGNAL CIRCUIT
NO
>> Repair harness or connector.
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