Infiniti QX56 (Z62). Manual - part 798

 

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Infiniti QX56 (Z62). Manual - part 798

 

 

B262A, B262B, B2657, B2658 EXHAUST GAS/OUTSIDE ODOR DETECTING 

SENSOR

HAC-83

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

B262A, B262B, B2657, B2658 EXHAUST GAS/OUTSIDE ODOR DETECT-
ING SENSOR

DTC Logic

INFOID:0000000006275918

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-83, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006275919

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10A fuse [No.4, located in fuse block (J/B)]
NOTE:
Refer to 

PG-140, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2.

CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect exhaust gas / outside odor detecting sensor connector.

3.

Turn ignition switch ON.

4.

Check voltage between exhaust gas / outside odor detecting sensor harness and ground.

DTC

Items

(CONSULT-III screen terms)

DTC detection condition

Possible cause

B262A

GAS SENSOR

Exhaust gas / outside odor detecting sensor 
duty ratio 15% or less.

• Exhaust gas / outside odor detect-

ing sensor

• A/C auto amp.
• Harness or connectors

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

B262B

Exhaust gas / outside odor detecting sensor 
duty ratio 85% or more.

B2657

CAS SENSOR CIRCUIT

Exhaust gas / outside odor detecting sensor 
duty ratio 0%.

B2658

Exhaust gas / outside odor detecting sensor 
duty ratio 100%.

+

Voltage

(Approx.)

Exhaust gas / outside odor detect-

ing sensor 

Connector

Terminal

E117

1

Ground

Battery voltage

HAC-84

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B262A, B262B, B2657, B2658 EXHAUST GAS/OUTSIDE ODOR DETECTING 

SENSOR

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector between exhaust gas / outside odor detecting sensor and fuse block

(J/B).

3.

CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between exhaust gas / outside odor detecting sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between exhaust gas / outside odor detecting sensor harness connector and ground.

Is the inspection result normal?

YES

>> Replace exhaust gas / outside odor detecting sensor. Refer to 

HAC-151, "Removal and Installa-

tion"

.

NO

>> GO TO 5.

5.

CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp.connector.

3.

Check continuity between exhaust gas / outside odor detecting sensor harness connector and A/C auto
amp. connector.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT FOR GROUND

SHORT

Check continuity between exhaust gas / outside odor detecting sensor harness connector and ground.

Is the inspection result normal?

Exhaust gas / outside odor detect-

ing sensor 

Continuity

Connector

Terminal

E117

2

Ground

Existed

+

Voltage

(Approx.)

Exhaust gas / outside odor detect-

ing sensor 

Connector

Terminal

E117

3

Ground

5 V

Exhaust gas / outside odor detect-

ing sensor 

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

E117

3

M50

10

Existed

Exhaust gas / outside odor detect-

ing sensor 

Continuity

Connector

Terminal

E117

3

Ground

Not existed

B262A, B262B, B2657, B2658 EXHAUST GAS/OUTSIDE ODOR DETECTING 

SENSOR

HAC-85

< 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 7.

NO

>> Repair harness or connector.

7.

CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT FOR POWER

SHORT

Check voltage between exhaust gas / outside odor detecting sensor harness 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.

+

Voltage

(Approx.)

Exhaust gas / outside odor detect-

ing sensor 

Connector

Terminal

E117

3

Ground

0 V

HAC-86

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B2630, B2631 SUNLOAD SENSOR (DRIVER SIDE)

B2630, B2631 SUNLOAD SENSOR (DRIVER SIDE)

DTC Logic

INFOID:0000000006275920

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:0000000006275921

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

B2630

SUNLOAD SENSOR

Detected calorie at sunload sensor (driver side) 

2832 W/m

2

 (2436 kcal/m

2

·h) or more.

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

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

B2631

Detected calorie at sunload sensor (driver side) 

64.7 W/m

2

 (55.6 kcal/m

2

·h) or less.

+

Voltage

(Approx.)

Sunload sensor

Connector

Terminal

M74

2

Ground

5 V

Sunload sensor

Continuity

Connector

Terminal

M74

3

Ground

Existed

 

 

 

 

 

 

 

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