Nissan Pathfinder. Instruction - 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 

HAC-163, "Exploded View"

.

Is the inspection result normal?

YES

>> Replace shut-off door motor. Refer to 

HAC-165, "REAR SHUT-OFF DOOR MOTOR : Removal

and Installation"

.

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 

HAC-49, "Wiring Diagram"

.

1.

CHECK FUSE

Check 10A fuse [No. 30, located in the fuse block (J/B)].

NOTE:

Refer to 

PG-81, "Terminal Arrangement"

.

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 

HAC-49, "Wiring Diagram"

.

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 

HAC-

81, "DTC Logic"

 or 

HAC-82, "DTC Logic"

. 

Is any DTC No. displayed?

YES

>> Perform diagnosis for the applicable DTC. Refer to 

HAC-46, "DTC Index"

. 

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 

HAC-119, "A/C SWITCH ASSEM-

BLY : Diagnosis Procedure"

. 

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.