Infiniti QX56 (Z62). Manual - part 1078

SBC-12

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (PRE-CRASH SEAT BELT)

WORK SUPPORT

Monitor item

Description

DOOR OPENING RETRACT RETRY

Changes the number of times for the seat belt retract retry when the door opens.

PRE-CRASH SEAT BELT CONTROL UNIT (DRIVER SIDE)

SBC-13

< ECU DIAGNOSIS INFORMATION >

C

D

E

F

G

I

J

K

L

M

A

B

SBC

N

O

P

ECU DIAGNOSIS INFORMATION

PRE-CRASH SEAT BELT CONTROL UNIT (DRIVER SIDE)

Reference Value

INFOID:0000000006237883

VALUES ON THE DIAGNOSIS TOOL

CONSULT-III MONITOR ITEM

Monitor item

Condition

Value/Status

(Approx.)

BUCKLE SW RH

RH seat belt is not fastened

OFF

RH seat belt is fastened

ON

BUCKLE SW LH

RH seat belt is not fastened

OFF

RH seat belt is fastened

ON

VEHICLE DISTANCE

Not activated

OFF

Activated

ON

IGN SW

Ignition switch OFF

OFF

Ignition switch ON

ON

FR DOOR SW RH

LH door close

CLOSE

LH door open

OPEN

FR DOOR SW LH

RH door close

CLOSE

RH door open

OPEN

ABS ACTIVATING

ABS is inactive

OFF

ABS is active

ON

VHCL SPEED

While driving

Equivalent speedometer reading (km/h)

BRK PEDAL SNSR1

Brake released 

→

 depressed

(1 V 

→

 4 V)

BRK PEDAL SNSR2

Brake released 

→

 depressed

(4 V 

→

 1 V)

STRG ANGLE

Steering wheel: 0

°

 (Neutral)

±

2.5 (deg)

Steering wheel: 90

°

 (Turned right)

+90 (deg)

Steering wheel: 90

°

 (Turned left)

-90 (deg)

STRG ANGLE SPEED 

Steering wheel: Being turned

Depending on steering acceleration speed 

(deg/s)

INCLINATION JDMT

Vehicle is level

OFF

Vehicle is inclined

ON

PRE-TEN ACTIVTN

Seat belt pre-tensioner is not activated

OFF

Seat belt pre-tensioner is activated

ON

HEAT PROTC RH

RH heat protection is not activated

OFF

RH heat protection is activated

ON

HEAT PROTC LH

LH heat protection is not activated

OFF

LH heat protection is activated

ON

SBC-14

< ECU DIAGNOSIS INFORMATION >

PRE-CRASH SEAT BELT CONTROL UNIT (DRIVER SIDE)

TERMINAL LAYOUT

PHYSICAL VALUES

Fail Safe

INFOID:0000000006237884

• When a system malfunction is detected, deactivates a part of the system or all functions depending on the

malfunctioning part.

• When the malfunction condition recovers to the normal condition, the system returns to the normal opera-

tion. 

JMHIA0711ZZ

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

–

Signal name

Input/

Output

1

(Y)

Ground

Power supply

Input

—

Battery voltage

2

(G)

Ground

Brake pedal stroke sensor signal 1

Input

Brake released 

→

 depressed

1 V - 4 V

4

(P)

Ground

CAN-L

Input/

Output

—

—

6

(LG/R)

Ground

Seat belt buckle switch signal

Input

Seat belt is fastened

0 V

Seat belt is unfastened

5 V

8

(G)

Ground

Local Communication Line 2

Output

IGN ON

5 V

9

(–)

Ground

Shield

—

—

—

10

(R)

Ground

Brake pedal stroke sensor power circuit

Output

IGN ON

5 V

12

(B)

Ground

Brake pedal stroke sensor signal 2

Input

Brake released 

→

 depressed

4 V - 1 V

14

(L)

Ground

CAN-H

Input/

Output

—

—

16

(W)

Ground

Local Communication Line 1

Input/

Output

—

—

17

(W)

Ground

Brake pedal stroke sensor ground circuit

—

—

0 V

18

(B)

Ground

Ground

—

—

0 V

19

(W)

Ground

Motor drive circuit power supply

Input

—

Battery voltage

20

(B)

Ground

Motor drive circuit ground

—

—

0 V

PRE-CRASH SEAT BELT CONTROL UNIT (DRIVER SIDE)

SBC-15

< ECU DIAGNOSIS INFORMATION >

C

D

E

F

G

I

J

K

L

M

A

B

SBC

N

O

P

*

1

: The deactivation mode differs depending on the internal malfunctioning condition of control unit

Display contents of CONSULT-III

Fail-safe

U0126

STRG ANG SEN SIG

Stops the operation in the conditions as per the following.
• When lateral slippage during cornering occurs
• When steering wheel is rotated for emergency
• A part of comfort function

U0428

STRG ANGL CAL

Stops the operation in the conditions as per the following.
• When lateral slippage during cornering occurs
• When steering wheel is rotated for emergency
• A part of comfort function

U1000

CAN communication circuit

Stops the operation in the conditions as per the following. *

1

• During emergency brake operation
• When ABS continuously operates
• When lateral slippage during cornering occurs
• When Intelligent brake assistance operates
• When steering wheel is rotated for emergency
• When the vehicle inclined excessively
• A part or the whole comfort function

B2451

SEAT BLT MTR DR CIRC

Fully deactivates the whole operation.

B2452

SEAT BLT MTR AS CIRC

Deactivates a part of comfort function.

B2453

BR_STROKE_SEN_CIRC

Stops the operation in the conditions as per the following.
• During emergency brake operation
• When ABS continuously operates
• A part of comfort function

B2454

SEAT BLT PWR DR CIRC

Fully deactivates the whole operation.

B2455

CONTROL UNIT DR

Stops the operation in the conditions as per the following. *

1

• During emergency brake operation
• When ABS continuously operates
• When lateral slippage during cornering occurs
• When Intelligent brake assistance operates
• When steering wheel is rotated for emergency
• When the vehicle inclined excessively
• A part or the whole comfort function

B2456

SEAT BLT PWR AS

Deactivates a part of comfort function.

B2457

CONTROL UNIT AS

Deactivates a part of comfort function.

B2458

LOCAL COMM

Deactivates a part of comfort function.

B2461

VHCL SPEED SIGNAL

Stops the operation in the conditions as per the following.
• During emergency brake operation
• When ABS continuously operates
• When lateral slippage during cornering occurs
• When steering wheel is rotated for emergency
• When the vehicle inclined excessively
• When comfort function operates

B2463

ROLLOVER SIGNAL

Stops the operation in the conditions as per the following.
• When the vehicle inclined excessively
• A part or the whole comfort function

B2466

DR/AS CONTROL UNIT

Deactivates a part of comfort function.

B2470

SYS HEAT PROTC DR

• Fully deactivates the whole operation.
• Operation return
- 1 time operation becomes possible after approximately 30 seconds
- Returns to the initial condition after approximately 8 minutes