Nissan Quest E52. Manual - part 767

HAC-198

< BASIC INSPECTION >

[MANUAL AIR CONDITIONING]

OPERATION INSPECTION

2.

Check whether any malfunction is detected.

Is any malfunction detected?

YES

>> Perform the appropriate diagnosis for the detected malfunction.

NO

>> Refer to 

HAC-231, "Symptom Table"

, and perform the appropriate diagnosis.

POWER SUPPLY AND GROUND CIRCUIT

HAC-199

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

A/C AMP.

A/C AMP. : Diagnosis Procedure

INFOID:0000000009652647

1.

CHECK SYMPTOM

Check symptom (A or B).

Which symptom is detected?

A

>> GO TO 2.

B

>> GO TO 5.

2.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10A fuse (No. 3 and 19, located in fuse block (J/B)].
NOTE:
Refer to 

PG-80, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 

3.

CHECK A/C AMP. IGNITION POWER SUPPLY AND ACC POWER SUPPLY

1.

Disconnect A/C amp. connector. 

2.

Turn ignition switch ON. 

3.

Check voltage between A/C amp. harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector between A/C amp. and fuse.

4.

CHECK A/C AMP. GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Check continuity between A/C amp. harness connector and ground. 

Is the inspection result normal?

YES

>> Replace front A/C control (A/C amp.). Refer to 

HAC-238, "Removal and Installation"

.

NO

>> Repair harness or connector.

Symptom

A

• Front air conditioning does not activate.
• Front air conditioning cannot be controlled.
• Operation status of front air conditioning is not indicated on display.

B

Memory function does not operate normally.

+

−

Voltage

A/C amp.

Connector

Terminal

M49

2

Ground

11 – 14 V

9

A/C amp.

—

Continuity

Connector

Terminal

M49

21

Ground

Existed

23

HAC-200

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

POWER SUPPLY AND GROUND CIRCUIT

5.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 15A fuse (No. 6, located in fuse block (J/B)].
NOTE:
Refer to 

PG-80, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 

6.

CHECK A/C AMP. BATTERY POWER SUPPLY

1.

Disconnect A/C amp. connector. 

2.

Check voltage between A/C amp. harness connector and ground. 

Is the inspection result normal?

YES

>> Replace front A/C control (A/C amp.). Refer to 

HAC-238, "Removal and Installation"

.

NO

>> Repair harness or connector between A/C amp. and fuse.

REAR A/C CONTROL

REAR A/C CONTROL : Diagnosis Procedure

INFOID:0000000009652648

1.

CHECK REAR A/C CONTROL POWER SUPPLY

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

>> GO TO 2.

NO

>> Repair harness or connector between rear A/C control and fuse block (J/B).

2.

CHECK REAR A/C CONTROL GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between rear A/C control harness connector and ground. 

Is the inspection result normal?

YES

>> Replace rear A/C control. Refer to 

HAC-239, "Removal and Installation"

.

NO

>> Repair harness or connector.

+

−

Voltage

A/C amp.

Connector

Terminal

M49

1

Ground

11 – 14 V

+

−

Voltage

Rear A/C control

Connector

Terminal

R16

12

Ground

11 – 14 V

Rear A/C control

—

Continuity

Connector

Terminal

R16

1

Ground

Existed

REAR A/C CONTROL COMMUNICATION SIGNAL

HAC-201

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL 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:0000000009652649

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 AMP.) CIRCUIT FOR OUTPUT SIG-

NAL

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-239, "Removal and Installation"

. 

NO

>> GO TO 3.

3.

CHECK COMMUNICATION SIGNAL (REAR A/C CONTROL 

→

 A/C AMP.) CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C amp. connector.

3.

Check continuity between rear A/C control harness connector and A/C 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 AMP.) CIRCUIT FOR SHORT

Check continuity between rear A/C control harness connector and ground. 

Is the inspection result normal?

YES

>> Replace front A/C control (A/C amp.). Refer to 

HAC-238, "Removal and Installation"

.

NO

>> Repair harness or connector.

5.

CHECK COMMUNICATION SIGNAL (A/C AMP. 

→

 REAR A/C CONTROL) CIRCUIT FOR OUTPUT SIG-

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

10

Ground

5 V

Rear A/C control

A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

R16

10

M49

33

 Existed

Rear A/C control

—

Continuity

Connector

Terminal

R16

10

Ground

Not existed