Infiniti QX56 (Z62). Manual - part 1087

SBC-48

< DTC/CIRCUIT DIAGNOSIS >

B2463 ROLLOVER SIGNAL

B2463 ROLLOVER SIGNAL

Description

INFOID:0000000006237919

Inputs the rollover signal from air bag diagnosis sensor unit via CAN communication.

DTC Logic

INFOID:0000000006237920

DTC DETECTION LOGIC

NOTE:
If DTC B2463 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

SBC-

35, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

SELF-DIAGNOSIS WITH PRE-CRASH SEAT BELT CONTROL UNIT

1.

Turn ignition switch ON.

2.

Check “Self-diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Refer to 

SBC-48, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006237921

1.

CHECK DTC WITH AIR BAG DIAGNOSIS SENSOR UNIT

Check “self-diagnostic result” for “AIR BAG DIAGNOSIS SENSOR UNIT” with CONSULT-III. Refer to 

SRC-19,

"CONSULT-III Function"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace air bag diagnosis sensor unit. Refer to 

SR-26, "Removal and Installation"

.

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

DTC No.

Self-diagnosis item

DTC Detection Condition

Possible causes

B2463

ROLLOVER SIGNAL

Receipt of a malfunction signal of the rollover signal

Air bag diagnosis sensor unit

B2466 DR/AS CONTROL UNIT

SBC-49

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SBC

N

O

P

B2466 DR/AS CONTROL UNIT

DTC Logic

INFOID:0000000006237922

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

SELF-DIAGNOSIS WITH PRE-CRASH SEAT BELT CONTROL UNIT

1.

Turn ignition switch ON.

2.

Check “Self-diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Refer to 

SBC-49, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006237923

1.

CHECK THE VEHICLE SPECIFICATION

Check the part number.

Does the part application fit to the vehicle specification?

YES

>> GO TO 2.

NO

>> Replace the malfunction parts.

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

DTC No.

Self-diagnosis item

DTC Detection Condition

Possible causes

B2466

DR/AS CONTROL UNIT

Pre-crash seat belt control unit is out of the 
vehicle specification

• Pre-crash seat belt control unit (driver side)
• Pre-crash seat belt control unit (passenger 

side)

SBC-50

< DTC/CIRCUIT DIAGNOSIS >

B2470 SYS HEAT PROTC DR

B2470 SYS HEAT PROTC DR

Description

INFOID:0000000006237924

When fastening and unfastening seat belt or opening and closing door is repeated continuously for a short
period of time, the system temporarily deactivates the retracting function of seat belt to prevent excessive
heating. The system recovers automatically.

DTC Logic

INFOID:0000000006237925

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

SELF-DIAGNOSIS WITH PRE-CRASH SEAT BELT CONTROL UNIT

1.

Turn ignition switch ON.

2.

Check “Self-diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Refer to 

SBC-50, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006237926

1.

CHECK THE VEHICLE CONDITION WITH CONSULT-III DATA MONITOR

1.

Check “HEAT PROTC LH” in “DATA MONITOR” with CONSULT-III.

2.

Wait until “OFF” appears.

3.

Perform the “self-diagnosis result” with CONSULT-III, after performing the check.

4.

Touch “ERASE”.

5.

Perform DTC Confirmation Procedure. Refer to 

SBC-50, "DTC Logic"

.

Is DTC B2470 displayed again?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

DTC No.

Self-diagnosis item

DTC Detection Condition

Possible causes

B2470

SYS HEAT PROTC DR

Deactivates to prevent excessive heating

Comfort function activates continuously in a 
short period of time.

B2471 SYS HEAT PROTC AS

SBC-51

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SBC

N

O

P

B2471 SYS HEAT PROTC AS

Description

INFOID:0000000006237927

When fastening and unfastening seat belt or opening and closing door is repeated continuously for a short
period of time, the system temporarily deactivates the retracting function of seat belt to prevent excessive
heating. The system recovers automatically.

DTC Logic

INFOID:0000000006237928

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

SELF-DIAGNOSIS WITH PRE-CRASH SEAT BELT CONTROL UNIT

1.

Turn ignition switch ON.

2.

Check “Self-diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Refer to 

SBC-51, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006237929

1.

CHECK THE VEHICLE CONDITION WITH CONSULT-III DATA MONITOR

1.

Check “HEAT PROTC RH” in “DATA MONITOR” with CONSULT-III.

2.

Wait until “OFF” appears.

3.

Perform the “self-diagnosis results” with CONSULT-III, after performing the check.

4.

Touch “ERASE”.

5.

Perform DTC Confirmation Procedure. Refer to 

SBC-51, "DTC Logic"

.

Is DTC B2471 displayed again?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

DTC No.

Self-diagnosis item

DTC Detection Condition

Possible causes

B2471

SYS HEAT PROTC AS

Deactivates to prevent excessive heating

Belt retracting function activates continuously in 
the short period of time