Nissan Murano Z51 (2008 year). Manual

B2581, B2582 INTAKE SENSOR

HAC-171

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

HAC

Is the inspection result normal?

YES

>> INSPECTION END

>> Replace intake sensor.

Terminal

Condition

Resistance k

Ω

Temperature

C (

−

15 (5)

18.63

−

10 (14)

14.15

−

5 (23)

10.86

0 (32)

8.41

5 (41)

6.58

10 (50)

5.19

15 (59)

4.12

20 (68)

3.30

25 (77)

2.67

30 (86)

2.17

35 (95)

1.78

40 (104)

1.46

45 (113)

1.21

Revision: 2008 October

2009 Murano

HAC-172

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B2630, B2631 SUNLOAD SENSOR

B2630, B2631 SUNLOAD SENSOR

Description

INFOID:0000000003469306

COMPONENT DESCRIPTION

Sunload Sensor

• The sunload sensor (1) is located on the driver’s side instrument

panel & pad.

• It detects sunload entering through windshield by means of a

photo diode. The sensor converts the sunload into a current value
which is then input into the A/C auto amp.

Sunload Sensor Circuit

SUNLOAD INPUT PROCESS

The A/C auto amp. also equips a processing circuit which averages the variations in detected sunload over a
period of time. This prevents drastic swings in the air temperature control system operation due to small or
quick variations in detected sunload.
For example, consider driving along a road bordered by an occasional group of large trees. The sunload
detected by the sunload sensor varies whenever the trees obstruct the sunlight. The processing circuit aver-
ages the detected sunload over a period of time, so that the (insignificant) effect of the trees momentarily
obstructing the sunlight does not cause any change in the air temperature control system operation. On the
other hand, shortly after entering a long tunnel, the system recognizes the change in sunload, and the system
reacts accordingly.

DTC Logic

INFOID:0000000003469308

DTC DETECTION LOGIC

NOTE:
• If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "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, light the sunload sensor with a lamp (60W or more).

JPIIA0559ZZ

JPIIA0615GB

DTC

Items

(CONSULT-III screen

terms)

Diagnostic item is detected when...

Possible cause

B2630

SUNLOAD SEN SHORT

Detected calorie at sunload sensor 64.7 w/m

(56 kcal/m

·h) or less

• Sunload sensor
• A/C auto amp.
• Harness and connector

(Sunload sensor circuit is open, or
there is a short in the circuit)

B2631

SUNLOAD SEN OPEN

Detected calorie at sunload sensor 2832 w/m

(2436 kcal/m

·h) or more

Revision: 2008 October

2009 Murano

B2630, B2631 SUNLOAD SENSOR

HAC-173

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

HAC

DTC CONFIRMATION PROCEDURE

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-diagnosis results.

NOTE:
• If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "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, light the sunload sensor with a lamp (60W or more).

Is DTC No.“B2630” or “B2631” displayed?

YES

>> Perform trouble diagnosis for the sunload sensor. Refer to

HAC-173, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003469309

CHECK VOLTAGE BETWEEN SUNLOAD SENSOR AND GROUND

Disconnect sunload sensor connector.

Turn ignition switch ON.

Check voltage between sunload sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> GO TO 4.

CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND A/C AUTO AMP.

Turn ignition switch OFF.

Disconnect A/C auto amp. connector.

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

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair harness or connector.

CHECK SUNLOAD SENSOR

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

Check sunload sensor. Refer to

HAC-174, "Component Inspection"

Is the inspection result normal?

YES

>> Replace A/C auto amp.

>> Replace sunload sensor.

CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND A/C AUTO AMP.

Turn ignition switch OFF.

Disconnect A/C auto amp. connector.

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

(+)

(

−

)

Voltage

Sunload sensor

—

Connector

Terminal

M74

Ground

Approx. 5 V

Sunload sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M74

M50

Existed

Revision: 2008 October

2009 Murano

HAC-174

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B2630, B2631 SUNLOAD SENSOR

Check continuity between sunload sensor harness connector and ground.

Is the inspection result normal?

YES

>> Replace A/C auto amp.

>> Repair harness or connector.

Component Inspection

INFOID:0000000003469310

CHECK SUNLOAD SENSOR

Turn ignition switch ON.

Check voltage between A/C auto amp. harness connector and ground.

NOTE:
Select a place where sunshine directly on it when checking sunload sensor.

Is the inspection result normal?

YES

>> INSPECTION END

>> Replace sunload sensor.

Sunload sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M74

M50

Existed

Sunload sensor

—

Continuity

Connector

Terminal

M74

Ground

Not existed

(+)

(

−

)

A/C auto amp.

—

Connector

Terminal

M50

Ground

SHA930E

Revision: 2008 October

2009 Murano

B2632, B2633 AIR MIX DOOR MOTOR (DRIVER SIDE)

HAC-175

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

HAC

B2632, B2633 AIR MIX DOOR MOTOR (DRIVER SIDE)

Description

INFOID:0000000003469311

COMPONENT DESCRIPTION

Air Mix Door Motor (Driver Side)

• The air mix door motor (driver side) (1) are attached to the heater

& cooling unit assembly.

• It rotates so that the air mix door is opened or closed to a position

set by the A/C auto amp.

• Motor rotation is then conveyed through a shaft and the air mix

door position feedback is then sent to the A/C auto amp. by PBR
built-in air mix door motor.

DTC Logic

INFOID:0000000003469312

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "DTC Logic"

DTC CONFIRMATION PROCEDURE

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-diagnosis results.

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "DTC Logic"

Is DTC No.“B2632” or “B2633” displayed?

YES

>> Perform trouble diagnosis for the air mix door motor (driver side). Refer to

HAC-176, "Diagnosis

Procedure"

>> GO TO 2.

FUNCTION INSPECTION

Press temperature control “UP” dial (driver side) until 32

C (90

F) is displayed.

Check for warm air at discharge air outlets.

Operate the compressor.

Press temperature control “DOWN” dial (driver side) until 18

C (60

F) is displayed.

Check for cool air at air discharge outlets.

Does it operate normally?

YES

>> END.

>> Check air mix door motor (driver side) installation, and repair or replace the malfunctioning parts.

Vehicle front

JPIIA0515ZZ

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

B2632

DR AIRMIX ACTR SHORT

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

• Air mix door motor (PBR internal

circuit is open or shorted)

• A/C auto amp.
• Harness and connector

(LAN communication line is
open or shorted)

B2633

DR AIRMIX ACTR OPEN

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

Revision: 2008 October

2009 Murano

HAC-176

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B2632, B2633 AIR MIX DOOR MOTOR (DRIVER SIDE)

Diagnosis Procedure

INFOID:0000000003469314

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

Check voltage between air mix door motor (driver side) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair the harnesses or connectors.

CHECK SIGNAL FOR AIR MIX DOOR MOTOR (DRIVER SIDE)

Check the output waveform (LAN signal) between air mix door motor (driver side) harness connector and
ground using an oscilloscope.

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair the harnesses or connectors.

CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect air mix door motor (driver side) connector.

Check continuity between air mix door motor (driver side) harness connector and ground.

Is the inspection result normal?

YES

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

>> Repair harness or connector.

(+)

(

−

)

Voltage

Air mix door motor (driver side)

—

Connector

Terminal

M306

Ground

Battery voltage

(+)

(

−

)

Voltage

Air mix door motor (driver side)

—

Connector

Terminal

M306

Ground

SJIA1453J

Air mix door motor (driver side)

—

Continuity

Connector

Terminal

M306

Ground

Existed

Revision: 2008 October

2009 Murano

B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)

HAC-177

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

HAC

B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)

Description

INFOID:0000000003469325

COMPONENT DESCRIPTION

Air Mix Door Motor (Passenger Side)

• The air mix door motor (passenger side) (1) are attached to the

heater & cooling unit assembly.

• It rotates so that the air mix door is opened or closed to a position

set by the A/C auto amp.

• Motor rotation is then conveyed through a shaft and the air mix

door position feedback is then sent to the A/C auto amp. by PBR
built-in air mix door motor.

DTC Logic

INFOID:0000000003469326

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "DTC Logic"

DTC CONFIRMATION PROCEDURE

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-diagnosis results.

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "DTC Logic"

Is DTC No.“B2634” or “B2635” displayed?

YES

>> Perform trouble diagnosis for the air mix door motor (passenger side). Refer to

HAC-178, "Diag-

nosis Procedure"

>> GO TO 2.

FUNCTION INSPECTION

Press temperature control “UP” dial (passenger side) until 32

C (90

F) is displayed.

Check for warm air at discharge air outlets.

Operate the compressor.

Press temperature control “DOWN” dial (passenger side) until 18

C (60

F) is displayed.

Check for cool air at air discharge outlets.

Does it operate normally?

YES

>> END.

>> Check air mix door motor (passenger side) installation, and repair or replace the malfunctioning

parts.

Vehicle front

JPIIA0526ZZ

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

B2634

PASS AIRMIX ACTR SHORT

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

• Air mix door motor (PBR internal

circuit is open or shorted)

• A/C auto amp.
• Harness and connector

(LAN communication line is open
or shorted)

B2635

PASS AIRMIX ACTR OPEN

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

Revision: 2008 October

2009 Murano

HAC-178

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)

Diagnosis Procedure

INFOID:0000000003469327

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

Check voltage between air mix door motor (passenger side) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair the harnesses or connectors.

CHECK SIGNAL FOR AIR MIX DOOR MOTOR (PASSENGER SIDE)

Check the output waveform (LAN signal) between air mix door motor (passenger side) harness connector and
ground using an oscilloscope.

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair the harnesses or connectors.

CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect air mix door motor (passenger side) connector.

Check continuity between air mix door motor (passenger side) harness connector and ground.

Is the inspection result normal?

YES

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

>> Repair harness or connector.

(+)

(

−

)

Voltage

Air mix door motor (passenger side)

—

Connector

Terminal

M307

Ground

Battery voltage

(+)

(

−

)

Voltage

Air mix door motor (passenger side)

—

Connector

Terminal

M307

Ground

SJIA1453J

Air mix door motor (passenger side)

—

Continuity

Connector

Terminal

M307

Ground

Existed

Revision: 2008 October

2009 Murano

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

HAC-179

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

HAC

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

Description

INFOID:0000000003469329

COMPONENT DESCRIPTION

Mode Door Motor

• The mode door motor (1) are attached to the heater & cooling unit

assembly.

• It rotates so that air is discharged from the outlet set by the A/C

auto amp. Motor rotation is conveyed to a link which activates the
mode door.

DTC Logic

INFOID:0000000003469330

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "DTC Logic"

DTC CONFIRMATION PROCEDURE

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-diagnosis results.

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "DTC Logic"

Is DTC No.“ B2636 ”, “ B2637 ”, “B2638 ”, “B2639 ”, “B2654 ” or “B2655 ” displayed?

YES

>> Perform trouble diagnosis for the mode door motor. Refer to

HAC-180, "Diagnosis Procedure"

>> GO TO 2.

FUNCTION INSPECTION

Press MODE switch and DEF switch.

Each position indicator should change shape.

Vehicle front

JPIIA0513ZZ

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

B2636

DR VENT DOOR FAIL

When the malfunctioning door position is
detected at VENT position

• Mode door motor (PBR internal

circuit is open or shorted)

• A/C auto amp.
• Harness and connector (LAN

communication line is open or
shorted)

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/L2 DOOR FAIL

When the malfunctioning door position is
detected at B/L2 position

Revision: 2008 October

2009 Murano

HAC-180

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

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

Confirm that air discharge comes out according to the air distribution table at below. Refer to

HAC-135,

"System Description"

NOTE:
Confirm that the compressor clutch is engaged (Sound or visual inspection) and intake door position is at FRE
when DEF (

) or D/F (

) is selected.

Does it operate normally?

YES

>> INSPECTION END

>> Check mode door motor installation, and repair or replace the malfunctioning parts.

Diagnosis Procedure

INFOID:0000000003469332

CHECK POWER SUPPLY FOR MODE DOOR MOTOR

Check voltage between mode door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair harness or connector.

CHECK SIGNAL FOR MODE DOOR MOTOR

Confirm A/C LAN signal between mode door motor harness connector and ground using an oscilloscope.

JPIIA0509GB

JPIIA0510GB

(+)

(

−

)

Voltage

Mode door motor

—

Connector

Terminal

M310

Ground

Battery voltage

Revision: 2008 October

2009 Murano

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

HAC-181

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

HAC

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair harness or connector.

CHECK MODE DOOR MOTOR GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect mode door motor connector.

Check continuity between mode door motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace mode door motor.

>> Repair harness or connector.

(+)

(

−

)

Voltage

Mode door motor

—

Connector

Terminal

M310

Ground

SJIA1453J

Mode door motor

—

Continuity

Connector

Terminal

M310

Ground

Existed

Revision: 2008 October

2009 Murano

HAC-182

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B263D, B263E, B263F INTAKE DOOR MOTOR

B263D, B263E, B263F INTAKE DOOR MOTOR

Description

INFOID:0000000003469334

COMPONENT DESCRIPTION

Intake Door Motor

• The intake door motor (1) is attached to the blower unit.

• It rotates so that air is drawn from inlets set by the A/C auto amp.

Motor rotation is conveyed to a lever which activates the intake
door.

DTC Logic

INFOID:0000000003469335

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "DTC Logic"

DTC CONFIRMATION PROCEDURE

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-diagnosis results.

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "DTC Logic"

Is DTC No.“B263D”, “B263E” or “B263F” displayed?

YES

>> Perform trouble diagnosis for the intake door motor. Refer to

HAC-183, "Diagnosis Procedure"

>> GO TO 2.

FUNCTION INSPECTION

Press intake switch.

The intake switch indicator is turned ON. (REC position)

Listen for intake door position change (Slight change of blower sound can be heard.).

Press intake switch again.

The intake switch indicator is turned OFF. (FRE position)

Listen for intake door position change (Slight change of blower sound can be heard.).

Does it operate normally?

YES

>> INSPECTION END

>> Check intake door motor installation, and repair or replace the malfunctioning parts.

Vehicle front

JPIIA0516ZZ

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

B263D

FRE DOOR FAIL

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

• Intake door motor (PBR internal

circuit is open or shorted)

• A/C auto amp.
• Harness and connector (LAN com-

munication line is open or shorted)

B263E

20P FRE DOOR FAIL

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

B263F

REC DOOR FAIL

When the malfunctioning intake door posi-
tion is detected at REC position

Revision: 2008 October

2009 Murano

B263D, B263E, B263F INTAKE DOOR MOTOR

HAC-183

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

HAC

Diagnosis Procedure

INFOID:0000000003469337

CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR

Check voltage between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair harness or connector.

CHECK SIGNAL FOR INTAKE DOOR MOTOR

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

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair harness or connector.

CHECK INTAKE DOOR MOTOR GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect intake door motor connector.

Check continuity between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace intake door motor.

>> Repair harness or connector.

(+)

(

−

)

Voltage

Intake door motor

—

Connector

Terminal

M304

Ground

Battery voltage

(+)

(

−

)

Voltage

Intake door motor

—

Connector

Terminal

M304

Ground

SJIA1453J

Intake door motor

—

Continuity

Connector

Terminal

M304

Ground

Existed

Revision: 2008 October

2009 Murano

HAC-184

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR

Description

INFOID:0000000003469339

COMPONENT DESCRIPTION

Upper Ventilator Door Motor

• The upper ventilator door motor (1) are attached to the heater &

cooling unit assembly.

• Upper ventilator door motor operates by UPPER VENT switch ON/

OFF when the DEF switch is OFF.

• Motor rotation is conveyed to a link which activates the upper ven-

tilator door.

DTC Logic

INFOID:0000000003469341

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "DTC Logic"

DTC CONFIRMATION PROCEDURE

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-diagnosis results.

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

161, "DTC Logic"

HAC-162, "DTC Logic"

Is DTC No.“B2661”, “B2662” or “B2663” displayed?

YES

>> Perform trouble diagnosis for the upper ventilator door motor. Refer to

HAC-185, "Diagnosis Pro-

cedure"

>> GO TO 2.

FUNCTION INSPECTION

Press the UPPER VENT switch.

The UPPER VENT switch indicator is turned ON.

Vehicle front

JPIIA0514ZZ

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

B2661

UPPER VENT DOOR OPEN POSI
FAIL

When the malfunctioning upper ventilator
door position is detected at open position.

• Upper ventilator door motor (PBR

internal circuit is open or shorted)

• A/C auto amp.
• Harness and connector (LAN com-

munication line is open or shorted)

B2662

UPPER VENT DOOR MID POSI
FAIL

When the malfunctioning upper ventilator
door position is detected at middle posi-
tion.

B2663

UPPER VENT DOOR SHUT POSI
FAIL

When the malfunctioning upper ventilator
door position is detected at shut position.

Revision: 2008 October

2009 Murano

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR

HAC-185

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

HAC

Check that the air blown from UPPER VENT does not greatly deviate from the air mix ratio.

Press the UPPER VENT switch again.

The UPPER VENT switch indicator is turned OFF.

The air blown from UPPER VENT stops.

Does it operate normally?

YES

>> INSPECTION END

>> Check upper ventilator door motor installation, and repair or replace the malfunctioning parts.

Diagnosis Procedure

INFOID:0000000003469342

CHECK POWER SUPPLY FOR UPPER VENTILATOR DOOR MOTOR

Check voltage between upper ventilator door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair harness or connector.

CHECK SIGNAL FOR UPPER VENTILATOR DOOR MOTOR

Confirm A/C LAN signal between upper ventilator door motor harness connector and ground using an oscillo-
scope.

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair harness or connector.

JPIIA0509GB

(+)

(

−

)

Voltage

Upper ventilator door motor

—

Connector

Terminal

M51

Ground

Battery voltage

(+)

(

−

)

Voltage

Upper ventilator door motor

—

Connector

Terminal

M51

Ground

SJIA1453J

Revision: 2008 October

2009 Murano

HAC-186

< COMPONENT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR

CHECK UPPER VENTILATOR DOOR MOTOR GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect upper ventilator door motor connector.

Check continuity between upper ventilator door motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace upper ventilator door motor.

>> Repair harness or connector.

Upper ventilator door motor

—

Continuity

Connector

Terminal

M51

Ground

Existed

Revision: 2008 October

2009 Murano

Nissan Murano Z51 (2008 year). Manual - part 231