Nissan March K13. Manual - part 380

HAC-54

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

MODE DOOR MOTOR

Is it installed normally?

YES

>> INSPECTION END

NO

>> Repair or adjust control linkage.

INTAKE DOOR MOTOR

HAC-55

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

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A

B

HAC

N

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INTAKE DOOR MOTOR

Diagnosis Procedure

INFOID:0000000006024042

1.

PERFORM SELF-DIAGNOSIS

Perform self-diagnosis function. Refer to 

HAC-22, "Diagnosis Description"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR

Check voltage between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK SIGNAL FOR INTAKE DOOR MOTOR

Confirm A/C LAN signal between intake door motor harness connector and ground using an oscilloscope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK INTAKE DOOR MOTOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect intake door motor connector.

3.

Check continuity between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace intake door motor.

NO

>> Repair harness or connector.

5.

CHECK INTAKE DOOR CONTROL LINKAGE

Check intake door control linkage is properly installed. Refer to 

XX-XX, "*****"

.

(+)

(

−

)

Voltage

(Approx.)

Intake door motor

—

Connector

Terminal

M54

1

Ground

12 V

(+)

(

−

)

Voltage

Intake door motor

—

Connector

Terminal

M54

3

Ground

SJIA1453J

Intake door motor

—

Continuity

Connector

Terminal

M54

2

Ground

Existed

HAC-56

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

INTAKE DOOR MOTOR

Is it installed normally?

YES

>> INSPECTION END

NO

>> Repair or adjust control linkage.

BLOWER MOTOR

HAC-57

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

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HAC

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BLOWER MOTOR

Component Function Check

INFOID:0000000006024045

1.

CHECK OPERATION

1.

Warm up the engine.

2.

Operate the fan control switch. Check that the fan speed and indicator unit are switched for all fan speeds. 

Does it operate normally?

YES

>> INSPECTION END

NO

>> Perform the diagnosis for the blower motor. Refer to 

HAC-57, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006024046

1.

CHECK FUSE

Check 15A fuses [Nos. 14 and 16, located in the fuse block (J/B)].
NOTE:
Refer to 

XX-XX, "*****"

.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the corresponding fuse.

2.

CHECK POWER SUPPLY OF BLOWER MOTOR

1.

Turn the ignition switch OFF.

2.

Disconnect the blower motor connector. 

3.

Turn the ignition switch ON.

4.

Check voltage between blower motor harness connector and the ground. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK BLOWER MOTOR RELAY

1.

Turn the ignition switch OFF.

2.

Check the blower motor relay. Refer to 

HAC-58, "Component Inspection"

.

Is inspection result normal?

YES

>> Repair the harness or connector between blower motor and fuse.

NO

>> Replace the blower motor relay.

4.

CHECK VOLTAGE BETWEEN FAN CONTROL AMP. AND GROUND

1.

Connect the blower motor connector.

2.

Disconnect the fan control amp. connector.

3.

Turn the ignition switch ON.

4.

Check voltage between fan control amp. harness connector and the ground.

Is inspection result normal?

YES

>> GO TO 6.

(+)

(

−

)

Voltage

(Approx.)

Blower motor

—

Connector

Terminal

M39

1

Ground

Battery voltage

(+)

(

−

)

Voltage

(Approx.)

Blower motor

—

Connector

Terminal

M81

1

Ground

Battery voltage