Nissan Primera P12. Instruction - page 17

TROUBLE DIAGNOSIS

ATC-61

C

D

E

F

G

H

I

K

L

M

A

B

ATC

LAN System Circuit

EJS002XY

SYMPTOM: Mode door motor, intake door motor and/or air mix door motor does not operate normally.

DIAGNOSTIC PROCEDURE FOR LAN SYSTEM CIRCUIT

1.

CHECK POWER SUPPLY FOR AUTO AMP.

OK or NG

OK

>> GO TO 2.

NG

>> Replace auto amp.

2.

CHECK SIGNAL FOR AUTO AMP.

Confirm A/C LAN signal using an oscilloscope.

OK or NG

OK

>> GO TO 3.

NG

>> Replace auto amp.

RJIA1326E

Terminal

Voltage

(+)

(

)

Auto amp. connec-

tor

Terminal No.

(Wire color)

M76

21 (G/Y)

Ground

Approx. 12V

RJIA0273E

Terminal

Voltage

(+)

(

)

Auto amp. connector

Terminal No.

(Wire color)

M75

5 (R/Y)

Ground

HAK0652D

ATC-62

TROUBLE DIAGNOSIS

3.

CHECK POWER SUPPLY FOR MOTOR

OK or NG

OK

>> GO TO 4.

NG

>> Replace harness or connector.

4.

CHECK SIGNAL FOR MOTOR

Confirm A/C LAN signal using an oscilloscope.

OK or NG

OK

>> GO TO 5.

NG

>> Replace harness or connector.

5.

CHECK MOTOR GROUND CIRCUIT

OK or NG

OK

>> GO TO 6.

NG

>> Replace harness or connector.

Door motor

Terminal

Voltage

(+)

(

)

Connector

Terminal No.

(Wire color)

Mode

M44

1 (G/Y)

Ground

Approx.

12V

Air mix

M40

1 (G/Y)

Intake

M73

1 (G/Y)

RJIA0509E

Door motor

Terminal

Voltage

(+)

(

)

Connector

Terminal No.

(Wire color)

Mode

M44

3 (R/Y)

Ground

Air mix

M40

3 (R/Y)

Intake

M73

3 (R/Y)

HAK0652D

Door motor

Terminal

Continuity

(+)

(

)

Connector

Terminal No.

(Wire color)

Mode

M44

2 (B)

Ground

Yes

Air mix

M40

2 (B)

Intake

M73

2 (B)

RJIA0511E

TROUBLE DIAGNOSIS

ATC-63

C

D

E

F

G

H

I

K

L

M

A

B

ATC

6.

CHECK MOTOR OPERATION

Disconnect and reconnect the motor connector and confirm the motor operation.

OK or NG

OK

>> (Return to operate normally.)

Poor contacting the motor connector

NG

>> (Does not operate normally.)

GO TO 7

7.

CHECK MODE DOOR MOTOR OPERATION

1.

Disconnect mode door motor and air mix door motor connector.

2.

Reconnect mode door motor connector and confirm the mode door motor operation.

OK or NG

OK

>> (Mode door motor operates normally.)

GO TO 8

NG

>> (Mode door motor does not operate normally.)

Replace the mode door motor.

8.

CHECK AIR MIX DOOR MOTOR OPERATION

1.

Disconnect mode door motor connector.

2.

Reconnect air mix door motor connector and confirm the air mix door motor operation.

OK or NG

OK

>> (Air mix door motor operates normally.)

GO TO 9

NG

>> (Air mix door motor does not operate normally.)

Replace the air mix door motor.

9.

CHECK INTAKE DOOR MOTOR OPERATION

1.

Disconnect air mix door motor connector.

2.

Reconnect intake door motor connector and confirm the intake door motor operation.

OK or NG

OK

>> (Intake door motor operates normally.)

Replace auto amp.

NG

>> (Intake door motor does not operate normally.)

Replace intake door motor.

ATC-64

TROUBLE DIAGNOSIS

Mode Door Motor Circuit

EJS002XZ

SYMPTOM:

Air outlet does not change.

Mode door motor does not operate normally.

INSPECTION FLOW

*1

ATC-28, "Discharge Air Flow"

*2

ATC-56, "Operational Check"

*3

ATC-49, "FUNCTION CONFIRMA-
TION PROCEDURE"

, see No.1

*4

ATC-49, "FUNCTION CONFIRMA-
TION PROCEDURE"

, see No. 5

*5

ATC-100, "Ambient Sensor Circuit"

*6

ATC-102, "In-vehicle Sensor Circuit"

*7

ATC-105, "Sunload Sensor Circuit"

*8

ATC-67, "Air Mix Door Motor Circuit"

*9

ATC-49, "FUNCTION CONFIRMA-
TION PROCEDURE"

, see No.14

RJIA0772E

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