Nissan Murano Z51. Manual - part 880

B2581, B2582 INTAKE SENSOR

HAC-175

< DTC/CIRCUIT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace intake sensor.

Terminal

Condition

Resistance k

Ω

Temperature 

°

C (

°

F)

1

2

−

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

HAC-176

< DTC/CIRCUIT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B2630, B2631 SUNLOAD SENSOR

B2630, B2631 SUNLOAD SENSOR

Description

INFOID:0000000005514718

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:0000000005514719

DTC DETECTION LOGIC

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

HAC-

165, "DTC Logic"

 or 

HAC-166, "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

2

 

(56 kcal/m

2

·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

2

 

(2436 kcal/m

2

·h) or more

B2630, B2631 SUNLOAD SENSOR

HAC-177

< DTC/CIRCUIT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

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-

165, "DTC Logic"

 or 

HAC-166, "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-177, "Diagnosis Procedure"

. 

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005514720

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-178, "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-178

< DTC/CIRCUIT DIAGNOSIS >

[WITH 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:0000000005514721

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