Infiniti FX35, FX50 (S51). Manual - part 1594

 

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

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  1592  1593  1594  1595   ..

 

 

Infiniti FX35, FX50 (S51). Manual - part 1594

 

 

SBC-34

< DTC/CIRCUIT DIAGNOSIS >

U0428 STRG ANGL CAL

U0428 STRG ANGL CAL

Description

INFOID:0000000005241753

Inputs the steering calibration incomplete signal from steering angle sensor via CAN communication.

DTC Logic

INFOID:0000000005241754

DTC DETECTION LOGIC

NOTE:
If DTC U0428 is displayed with DTC U0126, first perform the trouble diagnosis for DTC U0126. Refer to 

SBC-

33, "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-34, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005241755

1.

CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”

Check “Self-diagnostic result” for “ABS” with CONSULT-III. Refer to 

BRC-44, "CONSULT-III Function"

.

Is DTC detected?

YES

>> Repair or replace malfunctioning parts.

NO

>> GO TO 2.

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-36, "Intermittent Incident"

.

>> INSPECTION END

DTC No.

Self-diagnosis item

DTC Detection Condition

Possible causes

U0428

STRG ANGL CAL

Receipt of the calibration incomplete signal

 Steering angle sensor calibration incomplete

POWER SUPPLY AND GROUND CIRCUIT

SBC-35

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SBC

N

O

P

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000005241756

1.

CHECK FUSE AND FUSIBLE LINK

Check that the following fuse and fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is

blown.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect pre-crash seat belt control unit (driver side and passenger side) connectors.

3.

Check voltage between harness pre-crash seat belt control unit (driver side and passenger side) connec-
tor and ground.

Is the measurement value normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK GROUND CIRCUIT

Check continuity between pre-crash seat belt control unit (driver side and passenger side) harness connector
and ground.

Does continuity exist?

YES

>> INSPECTION END

NO

>> Repair or replace harness.

Terminal No.

Signal name

Fuse and fusible link No.

Driver side

1

Battery power supply

11

Passenger side

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

Ground

Voltage (V)

(Approx.)

Connector

Terminal

B9

1

Battery voltage

B221

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

Ground

Continuity

Connector

Terminal

B9

18

Existed

20

B221

18

20

SBC-36

< DTC/CIRCUIT DIAGNOSIS >

SEAT BELT BUCKLE SWITCH (DRIVER SIDE)

SEAT BELT BUCKLE SWITCH (DRIVER SIDE)

PRE-CRASH SEAT BELT SYSTEM

PRE-CRASH SEAT BELT SYSTEM : Description

INFOID:0000000005241757

• Performs the control of tension reducer according to the seat belt buckle switch ON/OFF.
• Detects whether or not the seat belt is fastened when the ignition switch turns ON. If the seat belt is not fas-

tened, illuminates the seat belt warning lamp on the combination meter.

• The seat belt buckle switch is installed in the seat belt buckle.

PRE-CRASH SEAT BELT SYSTEM : Component Function Check

INFOID:0000000005241758

1.

CHECK PRE-CRASH SEAT BELT CONTROL UNIT INPUT SIGNAL

 With CONSULT-III

When checking “BUCKLE SW LH” on DATA MONITOR screen, check that ON/OFF display changes synchro-
nized with the insertion operation to the seat belt buckle.

Is the inspection result normal?

YES

>> Seat belt buckle switch (driver side) circuit is normal.

NO

>> Refer to 

SBC-36, "PRE-CRASH SEAT BELT SYSTEM : Diagnosis Procedure"

.

PRE-CRASH SEAT BELT SYSTEM : Diagnosis Procedure

INFOID:0000000005241759

1.

CHECK PRE-CRASH SEAT BELT CONTROL UNIT INPUT SIGNAL

Check that voltage between seat belt buckle switch (driver side) and ground.

Is the inspection result normal?

YES

>> Seat belt buckle switch (driver side) circuit is normal.

NO

>> GO TO 2.

2.

CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect pre-crash seat belt control unit (driver side) connector and seat belt buckle switch (driver side)
connector.

3.

Check continuity between pre-crash seat belt control unit (driver side) and seat belt buckle switch (driver
side).

4.

Check continuity between pre-crash seat belt control unit (driver side) and ground.

Monitor item

Condition

BUCKLE SW LH

When driver side seat belt is not fastened: OFF

When driver side seat belt is fastened: ON

(+)

(–)

Condition

Voltage (V)

(Approx.)

Seat belt buckle switch (driver side)

Connector

Terminal

B503

59

Ground

When driver side seat 
belt is not fastened

5

When driver side seat 
belt is fastened

0

Pre-crash seat belt control unit (driver side)

Seat belt buckle switch (driver side)

Continuity

Connector

Terminal

Connector

Terminal

B9

6

B503

59

Existed

SEAT BELT BUCKLE SWITCH (DRIVER SIDE)

SBC-37

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SBC

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness between pre-crash seat belt control unit (driver side) and seat belt

buckle switch (driver side).

3.

CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT

Check continuity between seat belt buckle switch (driver side) and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness between seat belt buckle switch and ground.

4.

CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE) 

Check seat belt buckle switch (driver side). Refer to 

SBC-37, "PRE-CRASH SEAT BELT SYSTEM : Compo-

nent Inspection (Belt Buckle Switch)"

.

Is the inspection result normal?

YES

>> Replace pre-crash seat belt control unit (driver side).

NO

>> Replace seat belt buckle switch (driver side).

PRE-CRASH SEAT BELT SYSTEM : Component Inspection (Belt Buckle Switch)

INFOID:0000000005241760

1.

CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE)

1.

Turn ignition switch OFF.

2.

Disconnect seat belt buckle switch connector.

3.

Check continuity of seat belt buckle (driver side).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace seat belt buckle switch (driver side).

SEAT BELT WARNING LAMP SYSTEM

SEAT BELT WARNING LAMP SYSTEM : Description

INFOID:0000000005241761

• Performs the control of tension reducer according to the seat belt buckle switch ON/OFF.
• Detects whether or not the seat belt is fastened when the ignition switch turns ON. If the seat belt is not fas-

tened, illuminates the seat belt warning lamp on the combination meter.

• The seat belt buckle switch is installed in the seat belt buckle.

SEAT BELT WARNING LAMP SYSTEM : Component Function Check

INFOID:0000000005241762

1.

CHECK SEAT BELT BUCKLE SWITCH 

Pre-crash seat belt control unit (driver side)

Ground

Continuity

Connector

Terminal

B9

6

Not existed

Seat belt buckle switch (driver side)

Ground

Continuity

Connector

Terminal

B503

60

Existed

Seat belt buckle switch (driver side)

Condition

Continuity

Terminal

59

60

When driver side seat belt is 
not fastened

Not existed

When driver side seat belt is 
fastened

Existed

 

 

 

 

 

 

 

Content   ..  1592  1593  1594  1595   ..