Nissan Sentra. Manual - part 579

HAC-164

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

AIR MIX DOOR MOTOR

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-189, "Removal and Installation"

.

NO

>> Replace air mix door motor. Refer to 

HAC-193, "AIR MIX DOOR MOTOR : Removal and Installa-

tion"

.

Component Inspection

INFOID:0000000009757753

1.

CHECK AIR MIX DOOR MOTOR

1. Remove air mix door motor. Refer to 

HAC-193, "AIR MIX DOOR MOTOR : Removal and Installation"

.

2. Check resistance between air mix door motor terminals. Refer to applicable table for the normal value. 

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace air mix door motor. Refer to 

HAC-193, "AIR MIX DOOR MOTOR : Removal and Installa-

tion"

.

Terminal

Resistance (

Ω)

(Approx.)

5

1

90

2

3

4

INTAKE DOOR MOTOR

HAC-165

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

INTAKE DOOR MOTOR

Diagnosis Procedure

INFOID:0000000009757754

Regarding Wiring Diagram information, refer to 

HAC-145, "Wiring Diagram"

 or 

HAC-152, "Wiring Diagram"

.

1.

CHECK INTAKE DOOR MOTOR OPERATION

1. Turn ignition switch ON.

2. Operate intake switch and check by operation sound that intake door motor operates.
Does the intake door motor operate?

YES

>> Refer to 

GI-39, "Intermittent Incident"

.

NO

>> GO TO 2.

2.

CHECK INTAKE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect intake door motor connector, and A/C auto amp. connector.

3. Check continuity between intake door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK INTAKE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT

Check continuity between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK INTAKE DOOR MOTOR 

1. Turn ignition switch OFF.

2. Check intake door motor. Refer to 

HAC-166, "Component Inspection (Motor)"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace intake door motor. Refer to 

HAC-193, "INTAKE DOOR MOTOR : Removal and Installa-

tion"

.

5.

CHECK INSTALLATION OF INTAKE DOOR MOTOR SYSTEM

Check intake door motor system is properly installed. Refer to 

HAC-192, "Exploded View"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-189, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning parts.

Intake door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M48

2

M33 (with manual A/C)

M29 (without A/C)

35

Yes

6

36

Intake door motor

—

Continuity

Connector

Terminal

M48

2

Ground

No

6

HAC-166

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

INTAKE DOOR MOTOR

Component Inspection (Motor)

INFOID:0000000009757755

1.

CHECK INTAKE DOOR MOTOR

Supply intake door motor terminals with battery voltage and check by visually and operation sound that intake

door motor operates.

Is the inspection result normal?

YES

>> Inspection ENd.

NO

>> Replace intake door motor. Refer to 

HAC-193, "INTAKE DOOR MOTOR : Removal and Installa-

tion"

.

Terminal

Operation direction

+

−

2

6

FRE

6

2

REC

A/C SWITCH ASSEMBLY SIGNAL CIRCUIT

HAC-167

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

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A/C SWITCH ASSEMBLY SIGNAL CIRCUIT

Diagnosis Procedure

INFOID:0000000009757756

Regarding Wiring Diagram information, refer to 

HAC-145, "Wiring Diagram"

 or 

HAC-152, "Wiring Diagram"

.

1.

CHECK RX (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 and A/C auto amp. harness connector. 

4. Check continuity between A/C switch assembly harness connector M51 terminal 5 and ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK TX (A/C AUTO AMP. 

→ A/C SWITCH ASSEMBLY) CIRCUIT CONTINUITY

1. Check continuity between A/C switch assembly harness connector and A/C auto amp. harness connector.

2. Check continuity between A/C switch assembly harness connector M79 terminal 9 and ground. 

Is the inspection result normal?

YES

>> Perform trouble diagnosis for the A/C switch assembly. Refer to 

HAC-160, "A/C SWITCH

ASSEMBLY : Diagnosis Procedure"

. 

NO

>> Repair harness or connector.

A/C switch assembly

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M51

5

M33 (with manual A/C)

27

Yes

M29 (without A/C)

A/C switch assembly

—

Continuity

Connector

Terminal

M51

5

Ground

No

A/C switch assembly

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M51

13

M33 (with manual A/C)

28

Yes

M29 (without A/C)

A/C switch assembly

—

Continuity

Connector

Terminal

M51

13

Ground

No