Infiniti FX35, FX50 (S51). Manual - part 1599

SBC-54

< ECU DIAGNOSIS INFORMATION >

PRE-CRASH SEAT BELT CONTROL UNIT

PASSENGER SIDE

*

1

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

DTC Index

INFOID:0000000005241777

DISPLAY ITEM LIST (PRE-CRASH SEAT BELT)

Display contents of CONSULT-III

Fail-safe

B2452:SEAT BLT MTR DR CIRC

Fully deactivates the whole operation.

B2453:BR_STROKE_SEN_CIRC

Stops the operation in the conditions as per the following.
• During emergency brake operation
• When ABS continuously operates

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
• A part or the whole comfort function

B2456:SEAT BLT PWR AS

Fully deactivates the whole operation.

B2457:CONTROL UNIT AS

Fully deactivates the whole operation. *

1

B2458:LOCAL COMM

Fully deactivates the whole operation. *

1

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
• A part or the whole comfort function

B2462:VHCL DISTANCE SIGNAL

Deactivates a part of comfort function.

B2466:DR/AS CONTROL UNIT

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
• A part or the whole comfort function

B2471:SYS HEAT PROTC AS

• 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

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

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

DTC

Trouble diagnosis name

(CONSULT-III display)

DTC detection condition

Reference

U1000

CAN COMM CIRCUIT

Pre-crash seat belt control unit cannot transmit and receive CAN 
communication signal for 2 seconds or more

SBC-14

B2451

SEAT BLT MTR DR CIRC

• Motor or control unit malfunction
• Seat belt motor circuit is shorted or open

SBC-15

B2452

SEAT BLT MTR DR CIRC

• Motor or control unit malfunction
• Seat belt motor circuit is shorted or open

SBC-16

PRE-CRASH SEAT BELT CONTROL UNIT

SBC-55

< ECU DIAGNOSIS INFORMATION >

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D

E

F

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A

B

SBC

N

O

P

B2453

BR_STROKE_SEN_CIRC

• Brake pedal stroke sensor malfunction
• Brake pedal stroke sensor circuit is short

SBC-17

B2454

SEAT BLT PWR DR CIRC

Motor power supply circuit is shorted or open

SBC-20

B2455

CONTROL UNIT DR

Malfunction in pre-crash seat belt control unit 

SBC-22

B2456

SEAT BLT PWR AS

Motor power supply circuit is shorted or open

SBC-23

B2457

CONTROL UNIT AS

Malfunction in pre-crash seat belt control unit 

SBC-25

B2458

LOCAL COMM

Local communication line shorted or open

SBC-26

B2461

VHCL SPEED SIGNAL

Vehicle speed signal malfunction is received

SBC-28

B2462

VHCL DISTANCE SIGNAL

ACC signal malfunction is received

SBC-29

B2466

DR/AS CONTROL UNIT

Control unit is out of the vehicle specification

SBC-30

B2470

SYS HEAT PROTC DR

Deactivation for cooling to prevent system heating due to continuous 
operation

SBC-31

B2471

SYS HEAT PROTC AS

Deactivation for cooling to prevent system heating due to continuous 
operation

SBC-32

U0126

STRG ANG SEN SIG

Steering angle sensor malfunction is received

SBC-33

U0428

STRG ANGL CAL

Steering angle sensor calibration incomplete signal is received

SBC-34

DTC

Trouble diagnosis name

(CONSULT-III display)

DTC detection condition

Reference

SBC-56

< ECU DIAGNOSIS INFORMATION >

PRE-CRASH SEAT BELT CONTROL UNIT

Wiring Diagram - PRE-CRASH SEAT BELT SYSTEM -

INFOID:0000000005241778

JCHWA0386GB

PRE-CRASH SEAT BELT CONTROL UNIT

SBC-57

< ECU DIAGNOSIS INFORMATION >

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SBC

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JCHWA0387GB