Murano Cross Cabriolet Z51 (2012 year). Manual - part 44

HAC-42

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B2581, B2582 INTAKE SENSOR

B2581, B2582 INTAKE SENSOR

DTC Logic

INFOID:0000000007563427

DTC DETECTION LOGIC 

NOTE:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

HAC-

36, "DTC Logic"

.

• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. 

HAC-37,

"DTC Logic"

.

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-42, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000007563428

1.

CHECK INTAKE SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect intake sensor connector. 

3.

Turn ignition switch ON.

4.

Check voltage between intake sensor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK INTAKE SENSOR GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector. 

3.

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

Is the inspection result normal?

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B2581

INTAKE SENSOR

The intake sensor recognition temperature is 
too high [more than 69

°

C (156

°

F)].

• Harness or connectors

(Intake sensor circuit is open or 
shorted)

• Intake sensor
• A/C auto amp.

B2582

The intake sensor recognition temperature is 
too low [less than 

−

33

°

C (

−

27

°

F)].

+

−

Voltage

(Approx.)

Intake sensor

Connector

Terminal

M42

1

Ground

5 V

Intake sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M42

2

M50

37

Existed

Revision: 2013 February

2012 Murano CrossCabriolet

B2581, B2582 INTAKE SENSOR

HAC-43

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK INTAKE SENSOR

Check intake sensor. Refer to 

HAC-43, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-78, "Removal and Installation"

.

NO

>> Replace intake sensor. Refer to 

HAC-82, "Removal and Installation"

.

4.

CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector. 

3.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR SHORT

Check continuity between intake sensor harness connector and ground. 

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-78, "Removal and Installation"

.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000007563429

1.

CHECK INTAKE SENSOR

1.

Remove intake sensor. Refer to 

HAC-82, "Removal and Installation"

.

2.

Check resistance between intake sensor terminals. Refer to applicable table for the normal value. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace intake sensor. Refer to 

HAC-82, "Removal and Installation"

.

Intake sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M42

1

M50

16

Existed

Intake sensor

—

Continuity

Connector

Terminal

M42

1

Ground

Not existed

Terminal

Condition

Resistance: k

Ω

Temperature: 

°

C (

°

F) 

1

2

−

20 (

−

4)

24.81

−

10 (14)

14.15

0 (32) 

8.41

10 (50)

5.19

20 (68)

3.30

25 (77)

2.67

30 (86)

2.17

40 (104)

1.46

Revision: 2013 February

2012 Murano CrossCabriolet

HAC-44

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B2630, B2631 SUNLOAD SENSOR

B2630, B2631 SUNLOAD SENSOR

DTC Logic

INFOID:0000000007563430

DTC DETECTION LOGIC 

NOTE:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

HAC-

36, "DTC Logic"

.

• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. 

HAC-37,

"DTC Logic"

.

• Sunload sensor may register a malfunction when indoors, at dusk, or at other times when light is insufficient.

When performing the diagnosis indoors, use a lamp (60 W or more) that is pointed at the sunload sensor.

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-44, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000007563431

1.

CHECK SUNLOAD SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect sunload sensor connector. 

3.

Turn ignition switch ON.

4.

Check voltage between sunload sensor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK SUNLOAD SENSOR GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector. 

3.

Check continuity between sunload sensor harness connector and A/C auto amp harness connector. 

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B2630

SUNLOAD SENSOR

Detected calorie at sunload sensor 2832 W/m

2

 

(2436 kcal/m

2

·h) or more.

• Harness or connectors

(Sunload sensor circuit is open or 
shorted)

• Sunload sensor
• A/C auto amp.

B2631

Detected calorie at sunload sensor 64.7 W/m

2

 

(56 kcal/m

2

·h) or less.

+

−

Voltage

(Approx.)

Sunload sensor

Connector

Terminal

M74

1

Ground

5 V

Sunload sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M74

2

M50

37

Existed

Revision: 2013 February

2012 Murano CrossCabriolet

B2630, B2631 SUNLOAD SENSOR

HAC-45

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK SUNLOAD SENSOR

1.

Reconnect sunload sensor connector and A/C auto amp. connector. 

2.

Check sunload sensor. Refer to 

HAC-45, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-78, "Removal and Installation"

.

NO

>> Replace sunload sensor. Refer to 

HAC-81, "Removal and Installation"

.

4.

CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector. 

3.

Check continuity between sunload sensor harness connector and A/C auto amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR SHORT

Check continuity between sunload sensor harness connector and ground. 

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-78, "Removal and Installation"

.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000007563432

1.

CHECK SUNLOAD SENSOR

1.

Turn ignition switch ON.

2.

Check voltage between A/C auto amp. harness connector and ground. Refer to applicable table for the
normal value. 

Sunload sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M74

1

M50

15

Existed

Sunload sensor

—

Continuity

Connector

Terminal

M74

1

Ground

Not existed

+

−

A/C auto amp.

Connector

Terminal

M50

15

Ground

Revision: 2013 February

2012 Murano CrossCabriolet

HAC-46

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B2630, B2631 SUNLOAD SENSOR

NOTE:
• When checking indoors, use a lamp of approximately 60 W. Move the lamp towards and away from the

sensor to check. 

• The sunload amount produced by direct sunshine in fair weather is equivalent to approximately 0.77

kW/m

2

 (662 kcal/m

2

·h). 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace sunload sensor. Refer to 

HAC-81, "Removal and Installation"

.

SHA930E

Revision: 2013 February

2012 Murano CrossCabriolet

B2632, B2633 AIR MIX DOOR MOTOR (DRIVER SIDE)

HAC-47

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

B2632, B2633 AIR MIX DOOR MOTOR (DRIVER SIDE)

DTC Logic

INFOID:0000000007563433

DTC DETECTION LOGIC

NOTE:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

HAC-

36, "DTC Logic"

.

• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. 

HAC-37,

"DTC Logic"

.

• If all of door motors DTC (B2632, B2633, B2634, B2635, B2636, B2637, B2638, B2639, B263D, B263E,

B263F, B2654, B2655, B2661, B2662, and B2663) are detected, check “DOOR MOTOR” circuit. Refer to

HAC-64, "Diagnosis Procedure"

.

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-47, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000007563434

1.

CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) POWER SUPPLY

1.

Turn ignition switch ON.

2.

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

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 5.

2.

CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect air mix door motor LH and A/C auto amp. connector.

3.

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

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B2632

DR AIR MIX DOOR MOT

Air mix door motor (driver side) PBR 
position 95% or more

• Harness or connectors

[Air mix door motor (driver side) circuit 
is open or shorted]

• Air mix door motor (driver side) system 

installation condition

• Air mix door motor (driver side)
• A/C auto amp.

B2633

Air mix door motor (driver side) PBR 
position 5% or less

+

−

Voltage

(Approx.)

Air mix door motor LH

Connector

Terminal

M306

1

Ground

12 V

Revision: 2013 February

2012 Murano CrossCabriolet

HAC-48

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B2632, B2633 AIR MIX DOOR MOTOR (DRIVER SIDE)

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) LAN SIGNAL

1.

Connect air mix door motor LH and A/C auto amp. connector.

2.

Turn ignition switch ON.

3.

Confirm output waveform between air mix door motor LH harness connector and ground using oscillo-
scope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 6.

4.

CHECK INSTALLATION OF AIR MIX DOOR MOTOR (DRIVER SIDE) SYSTEM

Check air mix door motor (driver side) system is properly installed. Refer to 

HAC-85, "Exploded View"

.

Is the inspection result normal?

YES

>> Replace air mix door motor (driver side). Refer to 

HAC-85, "AIR MIX DOOR MOTOR : Removal

and Installation"

.

NO

>> Repair or replace malfunctioning part.

5.

CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect air mix door motor LH and A/C auto amp. connector.

3.

Check continuity between air mix door motor LH harness connector and A/C auto amp. harness connec-
tor.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-78, "Removal and Installation"

.

NO

>> Repair harness or connector.

6.

CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) LAN SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect air mix door motor LH and A/C auto amp. connector.

3.

Check continuity between air mix door motor LH harness connector and A/C auto amp. harness connec-
tor.

Air mix door motor LH

—

Continuity

Connector

Terminal

M306

2

Ground

Existed

+

−

Output waveform

Air mix door motor LH

Connector

Terminal

M306

3

Ground

SJIA1453J

Air mix door motor LH

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M306

1

M50

11

Existed

Revision: 2013 February

2012 Murano CrossCabriolet

B2632, B2633 AIR MIX DOOR MOTOR (DRIVER SIDE)

HAC-49

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-78, "Removal and Installation"

.

NO

>> Repair harness or connector.

Air mix door motor LH

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M306

3

M50

10

Existed

Revision: 2013 February

2012 Murano CrossCabriolet

HAC-50

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)

B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)

DTC Logic

INFOID:0000000007563435

DTC DETECTION LOGIC

NOTE:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

HAC-

36, "DTC Logic"

.

• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. 

HAC-37,

"DTC Logic"

.

• If all of door motors DTC (B2632, B2633, B2634, B2635, B2636, B2637, B2638, B2639, B263D, B263E,

B263F, B2654, B2655, B2661, B2662, and B2663) are detected, check “DOOR MOTOR” circuit. Refer to

HAC-64, "Diagnosis Procedure"

.

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-50, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000007563436

1.

CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) POWER SUPPLY

1.

Turn ignition switch ON.

2.

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

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 5.

2.

CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect air mix door motor RH and A/C auto amp. connector.

3.

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

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B2634

PASS AIR MIX DOOR MOT

Air mix door motor (passenger side) 
PBR position 95% or more

• Harness or connectors

[Air mix door motor (passenger side) 
circuit is open or shorted]

• Air mix door motor (passenger side) 

system installation condition

• Air mix door motor (passenger side)
• A/C auto amp.

B2635

Air mix door motor (passenger side) 
PBR position 5% or less

+

−

Voltage

(Approx.)

Air mix door motor RH

Connector

Terminal

M307

1

Ground

12 V

Revision: 2013 February

2012 Murano CrossCabriolet

B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)

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 the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) LAN SIGNAL

1.

Connect air mix door motor RH and A/C auto amp. connector.

2.

Turn ignition switch ON.

3.

Confirm output waveform between air mix door motor RH harness connector and ground using oscillo-
scope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 6.

4.

CHECK INSTALLATION OF AIR MIX DOOR MOTOR (PASSENGER SIDE) SYSTEM

Check air mix door motor (passenger side) system is properly installed. Refer to 

HAC-85, "Exploded View"

.

Is the inspection result normal?

YES

>> Replace air mix door motor (passenger side). Refer to 

HAC-85, "AIR MIX DOOR MOTOR :

Removal and Installation"

.

NO

>> Repair or replace malfunctioning part.

5.

CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect air mix door motor RH and A/C auto amp. connector.

3.

Check continuity between air mix door motor RH harness connector and A/C auto amp. harness connec-
tor.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-78, "Removal and Installation"

.

NO

>> Repair harness or connector.

6.

CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) LAN SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect air mix door motor RH and A/C auto amp. connector.

3.

Check continuity between air mix door motor RH harness connector and A/C auto amp. harness connec-
tor.

Air mix door motor RH

—

Continuity

Connector

Terminal

M307

2

Ground

Existed

+

−

Output waveform

Air mix door motor RH

Connector

Terminal

M307

3

Ground

SJIA1453J

Air mix door motor RH

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M307

1

M50

11

Existed

Revision: 2013 February

2012 Murano CrossCabriolet

HAC-52

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-78, "Removal and Installation"

.

NO

>> Repair harness or connector.

Air mix door motor RH

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M307

3

M50

10

Existed

Revision: 2013 February

2012 Murano CrossCabriolet

B2636, B2637, B2638, B2639, B2654, B2655 MODE 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

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

DTC Logic

INFOID:0000000007563437

DTC DETECTION LOGIC

NOTE:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

HAC-

36, "DTC Logic"

.

• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. 

HAC-37,

"DTC Logic"

.

• If all of door motors DTC (B2632, B2633, B2634, B2635, B2636, B2637, B2638, B2639, B263D, B263E,

B263F, B2654, B2655, B2661, B2662, and B2663) are detected, check “DOOR MOTOR” circuit. Refer to

HAC-64, "Diagnosis Procedure"

.

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-53, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000007563438

1.

CHECK MODE DOOR MOTOR POWER SUPPLY

1.

Turn ignition switch ON.

2.

Check voltage between mode door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 5.

2.

CHECK MODE DOOR MOTOR GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B2636

DR VENT DOOR FAIL

When the malfunctioning door position 
is detected at VENT position

• Harness or connectors

(Mode door motor circuit is open or 
shorted)

• Mode door motor system installation 

condition

• Mode door motor
• A/C auto amp.

B2637

DR B/L DOOR FAIL

When the malfunctioning door position 
is detected at B/L position

B2638

DR D/F1 DOOR FAIL

When the malfunctioning door position 
is detected at FOOT position

B2639

DR DEF DOOR FAIL

When the malfunctioning door position 
is detected at DEF position

B2654

D/F2 DOOR FAIL

When the malfunctioning door position 
is detected at D/F position

B2655

B/L DOOR FAIL

When the malfunctioning door position 
is detected at B/L position

+

−

Voltage

(Approx.)

Mode door motor

Connector

Terminal

M310

1

Ground

12 V

Revision: 2013 February

2012 Murano CrossCabriolet

HAC-54

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

2.

Disconnect mode door motor and A/C auto amp. connector.

3.

Check continuity between mode door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK MODE DOOR MOTOR LAN SIGNAL

1.

Connect mode door motor and A/C auto amp. connector.

2.

Turn ignition switch ON.

3.

Confirm output waveform between mode door motor harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 6.

4.

CHECK INSTALLATION OF MODE DOOR MOTOR SYSTEM

Check mode door motor system is properly installed. Refer to 

HAC-85, "Exploded View"

.

Is the inspection result normal?

YES

>> Replace mode door motor. Refer to 

HAC-86, "MODE DOOR MOTOR : Removal and Installation"

.

NO

>> Repair or replace malfunctioning part.

5.

CHECK MODE DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect mode door motor and A/C auto amp. connector.

3.

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

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-78, "Removal and Installation"

.

NO

>> Repair harness or connector.

6.

CHECK MODE DOOR MOTOR LAN SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect mode door motor and A/C auto amp. connector.

3.

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

Mode door motor

—

Continuity

Connector

Terminal

M310

2

Ground

Existed

+

−

Output waveform

Mode door motor

Connector

Terminal

M310

3

Ground

SJIA1453J

Mode door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M310

1

M50

11

Existed

Revision: 2013 February

2012 Murano CrossCabriolet

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

HAC-55

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-78, "Removal and Installation"

.

NO

>> Repair harness or connector.

Mode door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M310

3

M50

10

Existed

Revision: 2013 February

2012 Murano CrossCabriolet

HAC-56

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B263D, B263E, B263F INTAKE DOOR MOTOR

B263D, B263E, B263F INTAKE DOOR MOTOR

DTC Logic

INFOID:0000000007563439

DTC DETECTION LOGIC

NOTE:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

HAC-

36, "DTC Logic"

.

• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. 

HAC-37,

"DTC Logic"

.

• If all of door motors DTC (B2632, B2633, B2634, B2635, B2636, B2637, B2638, B2639, B263D, B263E,

B263F, B2654, B2655, B2661, B2662, and B2663) are detected, check “DOOR MOTOR” circuit. Refer to

HAC-64, "Diagnosis Procedure"

.

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-56, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000007563440

1.

CHECK INTAKE DOOR MOTOR POWER SUPPLY

1.

Turn ignition switch ON.

2.

Check voltage between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 5.

2.

CHECK INTAKE DOOR MOTOR GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect intake door motor and A/C auto amp. connector.

3.

Check continuity between intake door motor harness connector and ground.

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B263D

FRE DOOR FAIL

When the malfunctioning intake door 
position is detected at FRE position

• Harness or connectors

(Intake door motor circuit is open or 
shorted)

• Intake door motor system installation 

condition

• Intake door motor
• A/C auto amp.

B263E

20P FRE DOOR FAIL

When the malfunctioning intake door 
position is detected at 20% FRE posi-
tion

B263F

REC DOOR FAIL

When the malfunctioning intake door 
position is detected at REC position

+

−

Voltage

(Approx.)

Intake door motor

Connector

Terminal

M304

1

Ground

12 V

Revision: 2013 February

2012 Murano CrossCabriolet

B263D, B263E, B263F INTAKE DOOR MOTOR

HAC-57

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK INTAKE DOOR MOTOR LAN SIGNAL

1.

Connect intake door motor and A/C auto amp. connector.

2.

Turn ignition switch ON.

3.

Confirm output waveform between intake door motor harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 6.

4.

CHECK INSTALLATION OF INTAKE DOOR MOTOR SYSTEM

Check intake door motor system is properly installed. Refer to 

HAC-85, "Exploded View"

.

Is the inspection result normal?

YES

>> Replace intake door motor. Refer to 

HAC-87, "INTAKE DOOR MOTOR : Removal and Installa-

tion"

.

NO

>> Repair or replace malfunctioning part.

5.

CHECK INTAKE DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect intake door motor and A/C auto amp. connector.

3.

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

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-78, "Removal and Installation"

.

NO

>> Repair harness or connector.

6.

CHECK INTAKE DOOR MOTOR LAN SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect intake door motor and A/C auto amp. connector.

3.

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

Intake door motor

—

Continuity

Connector

Terminal

M304

2

Ground

Existed

+

−

Output waveform

Intake door motor

Connector

Terminal

M304

3

Ground

SJIA1453J

Intake door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M304

1

M50

11

Existed

Revision: 2013 February

2012 Murano CrossCabriolet