Nissan Quest E52. Manual - part 771

HAC-214

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

REAR MODE DOOR MOTOR

NO

>> Repair or replace malfunctioning part.

5.

CHECK REAR MODE DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect rear mode door motor and A/C amp. connector.

3.

Check continuity between rear mode door motor harness connector and A/C amp. harness connector.

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.

6.

CHECK REAR MODE DOOR MOTOR LAN SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect rear mode door motor and A/C amp. connector.

3.

Check continuity between rear mode door motor harness connector and A/C amp. harness connector.

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.

Rear mode door motor

A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

B405

1

M49

4

Existed

Rear mode door motor

A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

B405

3

M49

5

Existed

DOOR MOTOR

HAC-215

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

C

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HAC

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DOOR MOTOR

Diagnosis Procedure

INFOID:0000000009652657

NOTE:
Check this circuit when all door motor system malfunction are detected.

1.

CHECK DOOR MOTOR POWER SUPPLY

1.

Turn ignition switch ON.

2.

Check voltage between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 7.

2.

CHECK DOOR MOTOR GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect intake door motor and A/C amp. connector.

3.

Check continuity between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK DOOR MOTOR LAN SIGNAL

1.

Connect A/C amp. and intake door motor connector.

2.

Turn ignition switch ON.

3.

Confirm output waveform between A/C amp. harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 6.

4.

CHECK DOOR MOTOR LAN SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C amp. and intake door motor connector.

3.

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

+

−

Voltage

Intake door motor

Connector

Terminal

M304

1

Ground

9.5 – 13.5 V

Intake door motor

—

Continuity

Connector

Terminal

M304

2

Ground

Existed

+

−

Output waveform

A/C amp.

Connector

Terminal

M49

5

Ground

SJIA1453J

HAC-216

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

DOOR MOTOR

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

6.

CHECK DOOR MOTOR LAN SIGNAL CIRCUIT FOR SHORT

1.

Turn ignition switch OFF.

2.

Disconnect following connectors.

-

A/C amp.

-

Front air mix door motor

-

Front mode door motor

-

Intake door motor

-

Rear air mix door motor

-

Rear mode door motor

3.

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.

7.

CHECK DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect intake door motor and A/C amp. connector.

3.

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

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair harness or connector.

8.

CHECK DOOR MOTOR POWER SUPPLY CIRCUIT FOR SHORT

1.

Disconnect following connectors.

-

A/C amp.

-

Front air mix door motor

-

Front mode door motor

-

Rear air mix door motor

-

Rear mode door motor

2.

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

A/C amp.

Intake door motor

Continuity

Connector

Terminal

Connector

Terminal

M49

5

M304

3

Existed

A/C amp.

—

Continuity

Connector

Terminal

M49

5

Ground

Not existed

Intake door motor

A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

M304

1

M49

4

Existed

DOOR MOTOR

HAC-217

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

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H

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B

HAC

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O

P

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.

A/C amp.

—

Continuity

Connector

Terminal

M49

4

Ground

Not existed