Nissan Qashqai (2007-2010). Manual — part 925

HAC-60

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

INTAKE DOOR MOTOR

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace auto amp.

5.

CHECK SIGNAL FOR AUTO AMP.

Confirm A/C LAN signal between auto amp. harness connector M53 terminal 3 and ground using an oscillo-
scope.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace auto amp.

6.

CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR

Check voltage between intake door motor harness connector M304 terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair harness or connector.

7.

CHECK SIGNAL FOR INTAKE DOOR MOTOR

Confirm A/C LAN signal between intake door motor harness connector M304 terminal 3 and ground using an
oscilloscope.

(+)

(

−

)

Voltage

Auto amp.

—

Connector

Terminal

M53

20

Ground

Battery voltage

(+)

(

−

)

Voltage

Auto amp.

—

Connector

Terminal

M53

3

Ground

SJIA1453J

(+)

(

−

)

Voltage

Intake door motor

—

Connector

Terminal

M304

1

Ground

Battery voltage

INTAKE DOOR MOTOR

HAC-61

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair harness or connector.

8.

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 M304 terminal 2 and ground.

Is the inspection result normal?

YES

>> Replace intake door motor.

NO

>> Repair harness or connector.

(+)

(

−

)

Voltage

Intake door motor

—

Connector

Terminal

M304

3

Ground

SJIA1453J

Intake door motor

—

Continuity

Connector

Terminal

M304

2

Ground

Continuity should exist

HAC-62

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

BLOWER MOTOR

BLOWER MOTOR

Description

INFOID:0000000000954652

COMPONENT DESCRIPTION

The blower motor (1) utilizes a brush motor with a sirocco fan type.

Component Function Check

INFOID:0000000000954653

1.

CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK

1.

Turn fan control dial clockwise. Blower should operate on low speed.

2.

Turn fan control dial clockwise, and continue checking blower speed and fan LEDs until all speeds
checked.

Is the inspection result normal?

YES

>> END.

NO

>> Go to diagnosis procedure. Refer to

HAC-62, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000000954654

1.

PERFORM SELF-DIAGNOSIS STEP-2

Perform self-diagnosis STEP-2. Refer to

HAC-27, "Diagnosis Description"

, see No. 1 to 3.

Is there any malfunction displayed?

YES

>> Go to appropriate malfunctioning sensor circuit. Refer to

HAC-27, "Diagnosis Description"

, see to

No. 11.

NO

>> GO TO 2.

2.

PERFORM SELF-DIAGNOSIS STEP-4

Perform self-diagnosis STEP-4. Refer to

HAC-27, "Diagnosis Description"

, see No. 1 to 6.

Does blower motor speed change according to each code No.?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK ENGINE COOLANT TEMPERATURE

Check engine coolant temperature.

Is engine coolant temperature below 56

°

C (133

°

F)?

YES

>> GO TO 4.

NO

>> Blower motor operation is normal.

4.

CHECK BLOWER MOTOR OPERATING

Check blower motor operating.

Is blower motor operation under starting blower speed control?

YES

>> END.

NO

>> GO TO 5.

:

Vehicle front

JPIIA0028ZZ

Code No.

41

42

43

44

45

46

Blower motor voltage

5 V

11.75 V

8.5 V

11.75 V

BLOWER MOTOR

HAC-63

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

5.

CHECK POWER SUPPLY FOR BLOWER MOTOR

1.

Disconnect blower motor connector.

2.

Turn ignition switch ON.

3.

Check voltage between blower motor harness connector M312 terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 10.

6.

CHECK POWER SUPPLY FOR FAN CONTROL AMP.

1.

Disconnect fan control amp. connector.

2.

Check voltage between fan control amp. harness connector M311 terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 14.

7.

CHECK BLOWER MOTOR CONTROL SIGNAL

1.

Reconnect blower motor connector and fan control amp. connector.

2.

Turn ignition switch ON.

3.

Press VENT switch.

4.

Turn fan control dial to 1st speed.

5.

Check voltage between fan control amp. harness connector M311 terminal 2 and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO-1

>> In the case of less than approx. 2.5 V: GO TO 15.

NO-2

>> In the case of more than approx. 9 V: Replace auto amp.

8.

CHECK FAN CONTROL AMP. GROUND CIRCUIT

1.

Disconnect fan control amp. connector.

2.

Check continuity between fan control amp. harness connector M311 terminal 3 and ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair harness or connector.

(+)

(

−

)

Voltage

Blower motor

—

Connector

Terminal

M312

1

Ground

Battery voltage

(+)

(

−

)

Voltage

Fan control amp.

—

Connector

Terminal

M311

1

Ground

Battery voltage

(+)

(

−

)

Voltage

Fan control amp.

—

Connector

Terminal

M311

2

Ground

Approx. 2.5

Fan control amp.

—

Continuity

Connector

Terminal

M311

3

Ground

Continuity should exist