Nissan Murano Z51. Manual - part 850

B2630, B2631 SUNLOAD SENSOR

HAC-55

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

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DTC CONFIRMATION PROCEDURE

1.

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

1.

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

2.

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-

43, "DTC Logic"

 or 

HAC-44, "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-55, "Diagnosis Procedure"

. 

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005514616

1.

CHECK VOLTAGE BETWEEN SUNLOAD SENSOR AND GROUND

1.

Disconnect sunload sensor connector.

2.

Turn ignition switch ON.

3.

Check voltage between sunload sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

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

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 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-56, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp.

NO

>> Replace sunload sensor.

4.

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

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.

(+)

(

−

)

Voltage

Sunload sensor

—

Connector

Terminal

M74

1

Ground

Approx. 5 V

Sunload sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M74

2

M50

37

Existed

HAC-56

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

B2630, B2631 SUNLOAD SENSOR

4.

Check continuity between sunload sensor harness connector and ground.

Is the inspection result normal?

YES

>> Replace A/C auto amp.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000005514617

1.

CHECK SUNLOAD SENSOR

1.

Turn ignition switch ON.

2.

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

NO

>> Replace sunload sensor.

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

SHA930E

B2632, B2633 AIR MIX DOOR MOTOR (DRIVER SIDE)

HAC-57

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

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B2632, B2633 AIR MIX DOOR MOTOR (DRIVER SIDE)

Description

INFOID:0000000005514618

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:0000000005514619

DTC DETECTION LOGIC

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

HAC-

43, "DTC Logic"

 or 

HAC-44, "DTC Logic"

. 

DTC CONFIRMATION PROCEDURE

1.

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

1.

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

2.

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-

43, "DTC Logic"

 or 

HAC-44, "DTC Logic"

. 

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

YES

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

HAC-58, "Diagnosis

Procedure"

. 

NO

>> GO TO 2.

2.

FUNCTION INSPECTION

1.

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

°

C (90

°

F) is displayed.

2.

Check for warm air at discharge air outlets.

3.

Operate the compressor. 

4.

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

°

C (60

°

F) is displayed.

5.

Check for cool air at air discharge outlets.

Does it operate normally?

YES

>> INSPECTION END

NO

>> 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

HAC-58

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

B2632, B2633 AIR MIX DOOR MOTOR (DRIVER SIDE)

Diagnosis Procedure

INFOID:0000000005514620

1.

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.

NO

>> Repair the harnesses or connectors.

2.

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.

NO

>> Repair the harnesses or connectors.

3.

CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect air mix door motor (driver side) connector.

3.

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).

NO

>> Repair harness or connector.

(+)

(

−

)

Voltage

Air mix door motor (driver side)

—

Connector

Terminal

M306

1

Ground

Battery voltage

(+)

(

−

)

Voltage

Air mix door motor (driver side)

—

Connector

Terminal

M306

3

Ground

SJIA1453J

Air mix door motor (driver side)

—

Continuity

Connector

Terminal

M306

2

Ground

Existed