Nissan Quest E52. Manual - part 768

HAC-202

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

REAR A/C CONTROL COMMUNICATION SIGNAL

NAL

1.

Turn ignition switch OFF. 

2.

Disconnect A/C amp. connector. 

3.

Turn ignition switch ON. 

4.

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

>> GO TO 6.

6.

CHECK COMMUNICATION SIGNAL (A/C 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 amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair harness or connector.

7.

CHECK COMMUNICATION SIGNAL (A/C 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-200, "REAR A/C CONTROL : Diagno-

sis Procedure"

.

NO

>> Repair harness or connector.

+

−

Voltage

(Approx.)

A/C amp.

Connector

Terminal

M49

32

Ground

5 V

Rear A/C control

A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

R16

9

M49

32

 Existed

Rear A/C control

—

Continuity

Connector

Terminal

R16

9

Ground

 Not existed

INTAKE SENSOR

HAC-203

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

C

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INTAKE SENSOR

Diagnosis Procedure

INFOID:0000000009652650

1.

CHECK INTAKE SENSOR SIGNAL

1.

Turn ignition switch ON.

2.

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

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 2.

2.

CHECK INTAKE SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect intake sensor connector. 

3.

Turn ignition switch ON.

4.

Check voltage between intake sensor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK INTAKE SENSOR GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C amp. connector. 

3.

Check continuity between intake sensor harness connector and A/C amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK INTAKE SENSOR

Check intake sensor. Refer to 

HAC-204, "Component Inspection"

.

Is the inspection result normal?

YES

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

HAC-238, "Removal and Installation"

.

NO

>> Replace intake sensor. Refer to 

HAC-240, "Removal and Installation"

.

+

−

Voltage

A/C amp.

Connector

Terminal

M49

37

Ground

JMIIA1786ZZ

+

−

Voltage

(Approx.)

Intake sensor

Connector

Terminal

M42

1

Ground

5 V

Intake sensor

A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

M42

2

M49

40

Existed

HAC-204

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

INTAKE SENSOR

5.

CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C amp. connector. 

3.

Check continuity between intake sensor harness connector and A/C amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR SHORT

Check continuity between intake sensor 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.

7.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-42, "Intermittent Incident"

.

Is the inspection result normal?

YES

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

HAC-238, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning parts.

Component Inspection

INFOID:0000000009652651

1.

CHECK INTAKE SENSOR

1.

Remove intake sensor. Refer to 

HAC-240, "Removal and Installation"

.

2.

Check resistance between intake sensor terminals. Refer to applicable table for the normal value. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace intake sensor. Refer to 

HAC-240, "Removal and Installation"

.

Intake sensor

A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

M42

1

M49

37

Existed

Intake sensor

—

Continuity

Connector

Terminal

M42

1

Ground

Not existed

Terminal

Condition

Resistance: k

Ω

Temperature: 

°

C (

°

F) 

1

2

−

20 (

−

4)

24.81

−

10 (14)

14.15

0 (32) 

8.41

10 (50)

5.19

20 (68)

3.30

25 (77)

2.67

30 (86)

2.17

40 (104)

1.46

FRONT AIR MIX DOOR MOTOR

HAC-205

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

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FRONT AIR MIX DOOR MOTOR

Diagnosis Procedure

INFOID:0000000009652652

1.

CHECK FRONT AIR MIX DOOR MOTOR POWER SUPPLY

1.

Turn ignition switch ON.

2.

Check voltage between front air mix door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 5.

2.

CHECK FRONT AIR MIX DOOR MOTOR GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect front air mix door motor and A/C amp. connector.

3.

Check continuity between front air mix door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK FRONT AIR MIX DOOR MOTOR LAN SIGNAL

1.

Connect front air mix door motor and A/C amp. connector.

2.

Turn ignition switch ON.

3.

Confirm output waveform between front air mix door motor harness connector and ground using oscillo-
scope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 6.

4.

CHECK INSTALLATION OF FRONT AIR MIX DOOR MOTOR

Check front air mix door motor is properly installed. Refer to 

HAC-242, "Exploded View"

.

Is the inspection result normal?

YES

>> Replace front air mix door motor. Refer to 

HAC-243, "FRONT AIR MIX DOOR MOTOR : Removal

and Installation"

.

+

−

Voltage

Front air mix door motor

Connector

Terminal

M308

1

Ground

9.5 – 13.5 V

Front air mix door motor

—

Continuity

Connector

Terminal

M308

2

Ground

Existed

+

−

Output waveform

Front air mix door motor

Connector

Terminal

M308

3

Ground

SJIA1453J