Nissan Qashqai J11. Manual - part 1161

HAC-280

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

B24B9 MODE DOOR MOTOR

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK MODE DOOR MOTOR

Check mode door motor. Refer to 

HAC-280, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C amp. Refer to 

HAC-295, "Removal and Installation"

.

NO

>> Replace mode door motor. Refer to 

HAC-301, "MODE DOOR MOTOR : Removal and Installa-

tion"

.

Component Inspection

INFOID:0000000010499416

1.

CHECK MODE DOOR MOTOR

1.

Remove mode door motor. Refer to 

HAC-301, "MODE DOOR MOTOR : Removal and Installation"

.

2.

Check resistance between mode door motor terminals. Refer to applicable table for the normal value. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace mode door motor. Refer to 

HAC-301, "MODE DOOR MOTOR : Removal and Installa-

tion"

.

+

−

Voltage

Mode door motor

Connector

Terminal

M387

1

Ground

0 V

3

4

6

Terminal

Resistance (

Ω

)

(Approx.)

2

1

90

3

4

6

B24BB LEFT AIR MIX DOOR MOTOR

HAC-281

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

B24BB LEFT AIR MIX DOOR MOTOR

DTC Logic

INFOID:0000000010499417

DTC DETECTION LOGIC

POSSIBLE CAUSE

[CIRCUIT SHORT TO BATTERY]

• Harness and connector (Air mix door motor circuit is shorted to battery)
• Air Mix door motor
• A/C amp.

[CIRC SHORT TO GRND OR OPEN]

• Harness and connector (Air mix door motor circuit is open or shorted to ground)
• Air mix door motor
• A/C amp.

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.

3.

Check DTC.

Is DTC detected?

YES

>> Refer to 

HAC-281, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010499418

1.

CHECK AIR MIX DOOR MOTOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect air mix door motor connector.

3.

Turn ignition switch ON.

4.

Check voltage between air mix door motor harness connector and ground for several seconds after oper-
ating the temperature control dial.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK AIR MIX DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B24BB

LEFT AIR MIX DOOR MOTOR
(Left side air mix door motor)

[CIRCUIT SHORT TO BATTERY]

Detect short to battery circuit of air mix door 
motor circuits.

[CIRC SHORT TO GRND OR OPEN]

Detect open or short to ground circuit of air mix 
door motor circuits.

+

−

Voltage

Air mix door motor

Connector

Terminal

M388

2

Ground

11 - 14 V

HAC-282

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

B24BB LEFT AIR MIX DOOR MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect A/C amp. connector.

3.

Check continuity between air mix door motor harness connector and A/C amp. harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK AIR MIX DOOR MOTOR POWER SUPPLY CIRCUIT FOR SHORT

Check continuity between air mix door motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace A/C amp. Refer to 

HAC-295, "Removal and Installation"

.

NO

>> Repair harness or connector.

4.

CHECK AIR MIX DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C amp. connector.

3.

Check continuity between air mix door motor harness connector and A/C amp. harness connector.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK AIR MIX DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT

1.

Check continuity between air mix door motor harness connector and ground.

2.

Check voltage between air mix door motor harness connector and ground.

Air mix door motor

A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

M388

2

M50

24

Existed

Air mix door motor

—

Continuity

Connector

Terminal

M388

2

Ground

Not existed

Air mix door motor

A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

M388

1

M50

9

Existed

3

10

4

25

6

26

Air mix door motor

—

Continuity

Connector

Terminal

M388

1

Ground

Not existed

3

4

6

B24BB LEFT AIR MIX DOOR MOTOR

HAC-283

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK AIR MIX DOOR MOTOR

Check air mix door motor. Refer to 

HAC-283, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C amp. Refer to 

HAC-295, "Removal and Installation"

.

NO

>> Replace air mix door motor. Refer to 

HAC-300, "AIR MIX DOOR MOTOR : Removal and Installa-

tion"

.

Component Inspection

INFOID:0000000010499419

1.

CHECK AIR MIX DOOR MOTOR

1.

Remove air mix door motor. Refer to 

HAC-300, "AIR MIX DOOR MOTOR : Removal and Installation"

.

2.

Check resistance between air mix door motor terminals. Refer to applicable table for the normal value. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace air mix door motor. Refer to 

HAC-300, "AIR MIX DOOR MOTOR : Removal and Installa-

tion"

.

+

−

Voltage

Air mix door motor

Connector

Terminal

M388

1

Ground

0 V

3

4

6

Terminal

Resistance (

Ω

)

(Approx.)

2

1

90

3

4

6