Nissan Qashqai (2007-2010). Manual - part 923

HAC-52

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

HIGH-LEVEL VENTILATOR DOOR MOTOR

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK HIGH-LEVEL VENTILATOR DOOR MOTOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect high-level ventilator door motor connector.

3.

Check continuity between high-level ventilator door motor harness connector M44 terminal 2 and ground.

Is the inspection result normal?

YES

>> Replace high-level ventilator door motor.

NO

>> Repair harness or connector.

7.

PERFORM SELF-DIAGNOSIS STEP-4

Perform self-diagnosis STEP-4. Refer to 

HAC-27, "Diagnosis Description"

, see No. 1 to 6.

Is it operated normally?

YES

>> END.

NO

>> GO TO 8.

8.

CHECK HIGH-LEVEL VENTILATOR DOOR CONTROL LINKAGE

Check high-level ventilator door control linkage.

Is it installed normally?

YES

>> Refer to 

VTL-37, "Exploded View"

.

NO

>> Repair or adjust control linkage.

Component Inspection

INFOID:0000000001117101

HIGH-LEVEL VENTILATOR SWITCH

Check continuity between high-level ventilator switch (1) M52 termi-
nal 2 and 3.

(+)

(

−

)

Voltage

High-level VENT door motor

—

Connector

Terminal

M44

3

Ground

SJIA1453J

High-level VENT door motor

—

Continuity

Connector

Terminal

M44

2

Ground

Continuity should exist

JSIIA0303ZZ

HIGH-LEVEL VENTILATOR DOOR MOTOR

HAC-53

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

High-level ventilator switch

Condition

Continuity

Connector

Terminal

Connector

Terminal

M52

2

M52

3

High-level VENT SW: OFF

Continuity should not exist

High-level VENT SW: ON

Continuity should exist

HAC-54

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

AIR MIX DOOR MOTOR

AIR MIX DOOR MOTOR

Description

INFOID:0000000000954646

COMPONENT DESCRIPTION

Air Mix Door Motor

The air mix door motors (1) are attached to the A/C unit assembly. It rotates so that the air mix door is opened
or closed to a position set by the auto amp. Motor rotation is then conveyed through a shaft and the air mix
door position feedback is then sent to the auto amp. by PBR built-in air mix door motor.

Component Function Check

INFOID:0000000000954647

1.

CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK

1.

Turn temperature control dial (driver side) clockwise until 30.0

°

C is displayed.

2.

Check for hot air at discharge air outlets.

3.

Turn temperature control dial (driver side) counterclockwise until 16.0

°

C is displayed.

4.

Check for cold air at discharge air outlets.

Is the inspection result normal?

YES

>> END.

NO

>> Go to diagnosis procedure. Refer to 

HAC-54, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000000954648

1.

PERFORM SELF-DIAGNOSIS STEP-2

Perform self-diagnosis STEP-2. Refer to 

HAC-27, "Diagnosis Description"

, see No. 1 to 3.

Does code No. 20 appear on the display?

YES

>> GO TO 2.

NO

>> Go to appropriate malfunctioning sensor circuit. Refer to 

HAC-27, "Diagnosis Description"

, see

No. 11.

2.

PERFORM SELF-DIAGNOSIS STEP-4

Perform self-diagnosis STEP-4. Refer to 

HAC-27, "Diagnosis Description"

, see No.1 to 6.

Is it operated normally?

YES

>> END.

:

Vehicle front

JPIIA0026ZZ

AIR MIX DOOR MOTOR

HAC-55

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

NO-1

>> Malfunction is detected on left side. GO TO 3.

NO-2

>> Malfunction is detected on right side. GO TO 9.

3.

CHECK AIR MIX DOOR MOTOR (LEFT SIDE)

Check air mix door motor (left side). Refer to 

VTL-39, "Exploded View"

.

Is it installed normally?

YES

>> GO TO 4.

NO

>> Replace air mix door motor (left side).

4.

CHECK POWER SUPPLY FOR AUTO AMP.

1.

Turn ignition switch ON.

2.

Check voltage between auto amp. harness connector M53 terminal 20 and ground.

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 AIR MIX DOOR MOTOR (LEFT SIDE)

Check voltage between air mix door motor (left side) harness connector M306 terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair harness or connector.

7.

CHECK SIGNAL FOR AIR MIX DOOR MOTOR (LEFT SIDE)

Confirm A/C LAN signal between air mix door motor (left side) harness connector M306 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

Air mix door motor (left side)

—

Connector

Terminal

M306

1

Ground

Battery voltage