Infiniti FX35, FX50 (S51). Manual - part 1588

 

  Index      Infiniti     Infiniti FX35, FX50 (S51) - service repair manual 2010 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  1586  1587  1588  1589   ..

 

 

Infiniti FX35, FX50 (S51). Manual - part 1588

 

 

SBC-10

< SYSTEM DESCRIPTION >

SEAT BELT WARNING SYSTEM

SEAT BELT WARNING SYSTEM

System Diagram

INFOID:0000000005241703

System Description

INFOID:0000000005241704

• Turns ON seat belt warning lamp, when the Occupant Detection System judges adult or child in the front

passenger seat and the passenger seat belt buckle switch is OFF.

• Operation of air bag diagnosis sensor unit when air bag diagnosis sensor unit receives information from

Occupant Detection System.

• In addition, seat belt warning lamp illuminates, when the driver side seat belt is not fasten. This does not

relate to the air bag diagnosis sensor unit. 

• For driver seat belt function, refer to 

MWI-6, "METER SYSTEM : System Diagram"

JMHIA0685GB

Status (front passenger seat)

Seat belt warning lamp (When front passenger seat is unbuck-
led)

Empty

OFF

An object

OFF

Child/ child-seat

ON

Adult

ON

Malfunction

OFF

Zero point reset 
Not yet performed (service parts only)

OFF

SEAT BELT WARNING SYSTEM

SBC-11

< SYSTEM DESCRIPTION >

C

D

E

F

G

I

J

K

L

M

A

B

SBC

N

O

P

Component Parts Location

INFOID:0000000005241705

Component Description

INFOID:0000000005241706

1.

Combination meter (seat belt warn-
ing lamp) 

2.

Seat belt buckle switch (driver side)  3.

Seat belt buckle switch (passenger 
side) 

4.

Air bag diagnosis sensor unit

5.

Occupant Detection Sensor unit 

6.

Occupant Detection Sensor sensor 

7.

Passenger air bag OFF indicator

A.

View with center console assembly 
removed

B.

Backside of the seat cushion

JMHIA0686ZZ

Component parts

Outline of function

Seat belt buckle switch (Driver side)

Detects if the seat belt buckle switch (driver side) is fastened or unfastened

Seat belt buckle switch (Passenger side)

Detects if the seat belt buckle switch (passenger side) is fastened or unfastened

Seat belt warning lamp

Turns the seat belt warning lamp ON when the seat belt is unfastened

Occupant Detection System control unit

Judges the passenger seat condition based on the information from Occupant Detec-
tion System control unit

Occupant Detection System sensor

Detects if the passenger seat is empty or occupied

Air bag diagnosis sensor unit

Turns ON seat belt warning lamp based on the information from Occupant Detection 
System control unit

Front passenger air bag OFF indicator

Turns the front passenger air bag OFF indicator lamp ON when the front passenger 
seat is occupied by a child or a chile seat

SBC-12

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (PRE-CRASH SEAT BELT)

DIAGNOSIS SYSTEM (PRE-CRASH SEAT BELT)

CONSULT-III Function

INFOID:0000000005241707

Diagnosis for pre-crash seat belt system can be performed using CONSULT-III.

APPLICATION ITEM

SELF-DIAGNOSIS RESULTS

Check self-diagnosis results. 

CAUTION:

When malfunctions are detected in several systems, including the CAN communication [U1000], trou-
bleshoot the CAN communication [U1000].

ERASING SELF-DIAGNOSIS RESULTS

• SELF-DIAGNOSIS RESULTS

Part to be diagnosed

Diagnosis Mode

Function description

Pre-crash seat belt

Self-diagnosis Results

• Displays data recorded when a malfunction is de-

tected.

• Can print out the display.
• Erases DTC recorded in memory.

Data Monitor

Displays input data for pre-crash seat belt control 
unit in real time.

Work Support

Changes the setting for each system function.

CAN DIAG SUPPORT MNTR

Monitors communication status of CAN communi-
cation.

Ecu Identification

Displays pre-crash seat belt control unit part num-
ber.

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

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

DIAGNOSIS SYSTEM (PRE-CRASH SEAT BELT)

SBC-13

< SYSTEM DESCRIPTION >

C

D

E

F

G

I

J

K

L

M

A

B

SBC

N

O

P

Current “SELF-DIAG RESULTS” are displayed. (If all suspect circuits have been repaired, “NO DTC” is dis-
played.)

• SELF-DIAG RESULTS [MEMORY]

Resume trouble diagnosis item selection screen, confirm “SELF-DIAG RESULTS”, and then touch ERASE
MEMORY.

DATA MONITOR

WORK SUPPORT

Monitor item

Contents

BUCKLE SW RH

Indicates [ON/OFF] condition of seat belt buckle switch (RH).

BUCKLE SW LH

Indicates [ON/OFF] condition of seat belt buckle switch (LH).

VEHICLE DISTANCE

Indicates [ON/OFF] condition of intelligent brake assist signal.

IGN SW

Indicates [ON/OFF] condition of ignition switch.

FR DOOR SW RH

Indicates [Close/Open] condition of front door switch (RH).

FR DOOR SW LH

Indicates [Close/Open] condition of front door switch (LH).

VHCL SPEED

Indicates [Km/h] vehicle speed signal.

BRK PEDAL SNSR1

Indicates [V] voltage of brake pedal stroke sensor 1 signal.

BRK PEDAL SNSR2

Indicates [V] voltage of brake pedal stroke sensor 2 signal.

STRG ANGLE

Indicates [deg] steering angle signal.

STRG ACCL SPEED

Indicates [deg/s] steering acceleration speed signal.

HEAT PROTC RH

Indicates [ON/OFF] condition of heat protection (RH).

HEAT PROTC LH

Indicates [ON/OFF] condition of heat protection (RH).

Monitor item

Description

DOOR OPENING RETRACT RETRY

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

 

 

 

 

 

 

 

Content   ..  1586  1587  1588  1589   ..