Infiniti QX56 (Z62). Manual - part 803

B2667, B2668 SUNLOAD SENSOR (PASSENGER SIDE)

HAC-103

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

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M

A

B

HAC

N

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B2667, B2668 SUNLOAD SENSOR (PASSENGER SIDE)

DTC Logic

INFOID:0000000006275937

DTC DETECTION LOGIC 

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

HAC-

72, "DTC Logic"

.

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

HAC-73,

"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-III

1.

Turn ignition switch ON.

2.

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

3.

Check DTC.

Is DTC detected?

YES

>> Refer to 

HAC-103, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006275938

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

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-III screen terms)

DTC detection condition

Possible cause

B2667

PASS SUNLOAD SENSOR

Detected calorie at sunload sensor (passenger 

side) 2832 W/m

2

 (2436 kcal/m

2

·h) or more.

• Sunload sensor
• A/C auto amp.
• Harness or connectors

[The sensor circuit (passenger 
side) is open or shorted.]

B2668

Detected calorie at sunload sensor (passenger 

side) 64.7 W/m

2

 (55.6 kcal/m

2

·h) or less.

+

−

Voltage

(Approx.)

Sunload sensor

Connector

Terminal

M74

1

Ground

5 V

Sunload sensor

—

Continuity

Connector

Terminal

M74

3

Ground

Existed

HAC-104

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B2667, B2668 SUNLOAD SENSOR (PASSENGER SIDE)

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK SUNLOAD SENSOR

Check sunload sensor. Refer to 

HAC-104, "Component Inspection"

. 

Is the inspection result normal?

YES

>> Replace A/C auto amp.. Refer to 

HAC-146, "Removal and Installation"

.

NO

>> Replace sunload sensor. Refer to 

HAC-149, "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 GROUND SHORT

Check continuity between sunload sensor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR POWER SHORT

1.

Turn ignition switch ON.

2.

Check voltage between sunload sensor harness connector and ground. 

Is the inspection result normal?

YES

>> Replace A/C auto amp.. Refer to 

HAC-146, "Removal and Installation"

.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000006275939

1.

CHECK SUNLOAD SENSOR

1.

Turn ignition switch OFF.

2.

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

3.

Turn ignition switch ON.

4.

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

Sunload sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M74

1

M50

29

Existed

Sunload sensor

—

Continuity

Connector

Terminal

M74

1

Ground

Not existed

+

−

Voltage

(Approx.)

Sunload sensor

Connector

Terminal

M74

1

Ground

0 V

B2667, B2668 SUNLOAD SENSOR (PASSENGER SIDE)

HAC-105

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

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 0.770

kW/m

2

 (662 kcal/m

2

·h). 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace sunload sensor. Refer to 

HAC-149, "Removal and Installation"

.

+

−

A/C auto amp.

Connector

Terminal

M50

29

Ground

JPIIA1659GB

HAC-106

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B266B, B266C REAR IN-VEHICLE SENSOR

B266B, B266C REAR IN-VEHICLE SENSOR

DTC Logic

INFOID:0000000006275940

DTC DETECTION LOGIC 

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

HAC-

72, "DTC Logic"

.

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

HAC-73,

"DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

1.

Turn ignition switch ON.

2.

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

3.

Check DTC.

Is DTC detected?

YES

>> Refer to 

HAC-106, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006275941

1.

CHECK REAR IN-VEHICLE SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect rear in-vehicle sensor connector.

3.

Turn ignition switch ON.

4.

Check voltage between rear in-vehicle sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK REAR IN-VEHCLE SENSOR GROUND CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector.

3.

Check continuity between rear in-vehicle sensor harness connector and ground.

Is the inspection result normal?

DTC

Items

(CONSULT-III screen terms)

DTC detection condition

Possible cause

B266B

REAR IN-VEHICLE SEN

The rear in-vehicle sensor recognition tempera-
ture is too high.

• Rear in-vehicle sensor
• A/C auto amp.
• Harness or connectors

(The sensor circuit is open or short-
ed.)

B266C

The rear in-vehicle sensor recognition tempera-
ture is too low.

+

−

Voltage

(Approx.)

Rear in-vehicle sensor

Connector

Terminal

B211

1

Ground

5 V

Rear in-vehicle sensor

—

Continuity

Connector

Terminal

B211

2

Ground

Existed