Nissan Cube. Manual - part 553

HAC-50

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

INTAKE DOOR MOTOR

INTAKE DOOR MOTOR

Description

INFOID:0000000009950997

COMPONENT DESCRIPTION

• The intake door motor (1) is installed to A/C unit assembly. 

• The A/C auto amp. sends the control signal to Intake door motor.

When intake door motor receives the control signal, intake door is
moved to appropriate position by PBR (Potentio Balance Resistor)
opening angle indication signal. 

Intake door motor circuit

Diagnosis Procedure

INFOID:0000000009950998

POWER SUPPLY CIRCUIT

1.

CHECK INTAKE DOOR MOTOR DRIVE SIGNAL

1.

Turn the ignition switch ON.

2.

Check voltage between intake door motor harness connector and the ground when intake switch is oper-
ated.

Is inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK CONTINUITY BETWEEN A/C AUTO AMP. AND INTAKE DOOR MOTOR

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector.

3.

Disconnect the intake door motor connector.

4.

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

: Vehicle front

JPIIA1741ZZ

JPIIA1656GB

(+)

(

−

)

Condition

Voltage

(Approx.)

Intake door motor

—

Connector

Terminal

M54

5

Ground

FRE 

→

 REC

12 V

6

REC 

→

 FRE

INTAKE DOOR MOTOR

HAC-51

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harnesses or connectors. 

3.

CHECK CONTINUITY BETWEEN INTAKE DOOR MOTOR AND GROUND

Check continuity between intake door motor harness connector and the ground.

Is inspection result normal?

YES

>> Replace the A/C auto amp.

NO

>> Repair the harnesses or connectors.

4.

CHECK INTAKE DOOR MOTOR

Perform the intake door motor component inspection. Refer to 

HAC-53, "Component Inspection"

.

Is inspection result normal?

YES

>> Replace the A/C auto amp.

NO

>> Replace the intake door motor.

PBR CIRCUIT

1.

CHECK POWER SUPPLY OF INTAKE DOOR MOTOR PBR

1.

Turn the ignition switch ON.

2.

Check voltage between intake door motor harness connector and the ground.

Is inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK CONTINUITY BETWEEN INTAKE DOOR MOTOR AND A/C AUTO AMP.-1

1.

Turn the ignition switch OFF.

2.

Disconnect the intake door motor connector.

3.

Disconnect the A/C auto amp. connector.

4.

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

Is inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harnesses or connectors.

Intake door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M54

5

M50

13

Existed

6

12

Intake door motor

—

Continuity

Connector

Terminal

M54

5

Ground

Not existed

6

(+)

(

−

)

Voltage

(Approx.)

Intake door motor

—

Connector

Terminal

M54

1

Ground

5 V

Intake door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M54

1

M50

3

Existed

HAC-52

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

INTAKE DOOR MOTOR

3.

CHECK CONTINUITY INTAKE DOOR MOTOR AND GROUND-1

Check continuity between intake door motor and the ground.

Is inspection result normal?

YES

>> Replace the A/C auto amp.

NO

>> Repair the harnesses or connectors.

4.

CHECK INTAKE DOOR MOTOR PBR GROUND

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector.

3.

Check continuity between intake door motor harness connector and the ground.

Is inspection result normal?

YES

>> GO TO 5.

NO

>> Repair the harnesses or connectors.

5.

CHECK INTAKE DOOR MOTOR PBR FEEDBACK SIGNAL

1.

Connect the A/C auto amp. connector.

2.

Connect the intake door motor connector.

3.

Turn the ignition switch ON.

4.

Check voltage between A/C auto amp. and the ground when intake switch is operated.

Is inspection result normal?

YES

>> Replace the A/C auto amp.

NO

>> GO TO 6.

6.

CHECK CONTINUITY INTAKE DOOR MOTOR AND A/C AUTO AMP.-2

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector.

3.

Disconnect the intake door motor connector.

4.

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

Is inspection result normal?

YES

>> GO TO 7.

NO

>> Repair the harnesses or connectors.

7.

CHECK CONTINUITY INTAKE DOOR MOTOR AND GROUND-2 

Check continuity between intake door motor harness connector and the ground.

Intake door motor

—

Continuity

Connector

Terminal

M54

1

Ground

Not existed

Intake door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M54

3

M50

6

Existed

(+)

(

−

)

Condition

Voltage

(Approx.)

A/C auto amp.

—

Connector

Terminal

M54

1

Ground

FRE

4.5 V

REC

0.5 V

Intake door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M54

2

M51

26

Existed

INTAKE DOOR MOTOR

HAC-53

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is inspection result normal?

YES

>> Replace the intake door motor.

NO

>> Repair the harnesses or connectors.

Component Inspection

INFOID:0000000009950999

1.

CHECK INTAKE DOOR MOTOR 

1.

Turn the ignition switch OFF.

2.

Disconnect the intake door motor connector.

3.

Supply to the intake door motor terminal directly, confirm the motor operation by listening the sound or by
visually.

Is inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the intake door motor.

Intake door motor

—

Continuity

Connector

Terminal

M54

2

Ground

Not existed

Terminal

Operation

(+)

(

−

)

5

6

To  REC

6

5

To  FRE