Infiniti M35/M45 Y50. Manual - part 1035

 

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Infiniti M35/M45 Y50. Manual - part 1035

 

 

PRE-CRASH SEAT BELT

SB-11

C

D

E

F

G

I

J

K

L

M

A

B

SB

THWT0242E

SB-12

PRE-CRASH SEAT BELT

THWT0205E

PRE-CRASH SEAT BELT

SB-13

C

D

E

F

G

I

J

K

L

M

A

B

SB

Terminals and Reference Value for Pre-Crash Seat Belt Control Unit

NHS00083

Work Flow

NHS00084

1.

Check the symptom and customer's requests.

2.

Understand the system description. Refer to 

SB-3, "System Description"

 .

3.

Perform the preliminary check. Refer to 

SB-15, "Preliminary Check"

 .

4.

Check the self-diagnosis, results using CONSULT-II. Refer to 

SB-14, "CONSULT-II Function (PRECRASH

SEATBELT)"

 .

5.

Based on the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to 

SB-15,

"Diagnoses Symptom Chart"

 .

6.

Does pre-crash seat belt system operate normally? 
OK: GO TO 7. 
NG: GO TO 4.

7.

INSPECTION END

Terminal

Wire 

Color

Item

Signal

Input/Output

Condition

Voltage [V]

(Approx.)

1

G/R

Seat belt motor RH release 
direction signal

Output

Seat belt motor RH operation

Battery voltage

Other than above

0

2

W

Power source (BAT)

Input

Battery voltage

3

G/Y

Seat belt motor RH fastened 
direction signal

Output

Seat belt motor RH operation

Battery voltage

Other than above

0

4

GY/W

Seat belt motor LH fastened 
direction signal

Output

Seat belt motor LH operation

Battery voltage

Other than above

0

5

B/Y

Ground (Driver circuit)

0

6

L/Y

Seat belt motor LH release 
direction signal

Output

Seat belt motor LH operation

Battery voltage

Other than above

0

7

G/Y

Seat belt indicator signal

Output

When driver side seat belt is fastened

Battery voltage

When driver side seat belt is un-fastened

0

When driver side seat belt is fastened and 
system malfunction

Battery 

voltage 

 0

8

LG

Seat belt buckle switch RH

Input

When seat belt is fastened

5

When seat belt is un-fastened

0

10

SB

Seat belt buckle switch LH

Input

When seat belt is fastened

Battery voltage

When seat belt is un-fastened

0

13

W/G

Power source (IGN)

Input

Ignition switch ON or START

Battery voltage

16

W

Brake pedal stroke sensor 
output signal 1

Output

Brake pedal is fully released operation

1

Brake pedal is slightly depressed operation

4

18

R

Power source 
(Brake pedal stroke sensor)

Input

5

20

G

Brake pedal stroke sensor 
output signal 2

Output

Brake pedal is fully released operation

4

Brake pedal is slightly depressed operation

1

21

B

Ground 
(Brake pedal stroke sensor)

0

22

P

CAN-L

Input/Output

24

L

CAN-H

Input/Output

25

Ground (Shield wire)

0

26

B/Y

Ground (Control circuit)

0

SB-14

PRE-CRASH SEAT BELT

CONSULT-II Function (PRECRASH SEATBELT)

NHS00085

CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.

CONSULT-II START PROCEDURE

Refer to 

GI-38, "CONSULT-II Start Procedure"

 .

HOW TO READ SELF-DIAGNOSTIC RESULTS

SELF-DIAGNOSTIC RESULTS ITEM CHART

DATA MONITOR ITEM CHART

CONSULT-II 

diagnosis items

Inspection item

 self-diagnosis mode

Content

Reference 

page

PRECRASH 
SEATBELT

SELF–DIAG RESULTS

Carries out the self-diagnosis.

SB-14

DATA MONITOR

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

SB-14

CAN DIAG SUPPORT MNTR

The results of transmit / receive diagnosis of CAN communication 
can be read.

LAN-44

ECU PART NUMBER

Displays pre-crash seat belt control unit part No.

PHIA1176E

DTC

Self-diagnosis item

(CONSULT-II indication)

DTC detection condition

Reference 

page

U1000

 CAN COMM CIRCUIT

When pre-crash seat belt control unit is not transmitting or receiving CAN 
communication signal for 2 seconds or more.

 

SB-15

B2451

SB MOTOR RH CIRC 

Circuit of seat belt motor (RH) is open or shorted.

SB-26

B2452

SB MOTOR LH CIRC 

Circuit of seat belt motor (LH) is open or shorted.

SB-24

B2453

BR STROKE SEN CIRC 

Circuit of brake pedal stroke sensor is open or shorted.

SB-21

B2454

MOTOR PWR SUP CIRC 

Circuit of motor power supply is open or shorted.

SB-16

B2455

PSB C/U INT CIRC

ECU circuit internal abnormality

Monitor item [OPERATION or UNIT]

Contents

SB SW RH SIG

“ON/OFF”

RH seat belt switch signal is displayed.

SB SW LH SIG

“ON/OFF”

LH seat belt switch signal is displayed.

VHCL SPEED SE

“Km/h”

Vehicle speed signal is displayed.

B PEDAL SIG1

“V”

Brake pedal stroke sensor 1 signal voltage is displayed.

B PEDAL SIG 2

“V”

Brake pedal stroke sensor 2 signal voltage is displayed.

 

 

 

 

 

 

 

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