Infiniti QX56 (Z62). Manual - part 1089

 

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Infiniti QX56 (Z62). Manual - part 1089

 

 

SBC-56

< DTC/CIRCUIT DIAGNOSIS >

SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)

4.

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

Is the inspection result normal?

YES

>> Replace pre-crash seat belt control unit (passenger side). Refer to 

SB-6, "SEAT BELT RETRAC-

TOR : Removal and Installation"

.

NO

>> Repair or replace harness or connector.

3.

CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE) GROUND CIRCUIT

Check continuity between seat belt assembly (passenger side) and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness or connector.

4.

CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE) 

Check seat belt assembly (passenger side). Refer to 

SBC-56, "Component Inspection [Seat Belt Assembly

(Passenger Side)]"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

NO

>> Replace seat belt assembly (passenger side). Refer to 

SB-6, "SEAT BELT RETRACTOR :

Removal and Installation"

.

Component Inspection [Seat Belt Assembly (Passenger Side)]

INFOID:0000000006237936

1.

CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE)

1.

Turn ignition switch OFF.

2.

Disconnect seat belt assembly (passenger side) harness connector.

3.

Check continuity between seat belt assembly (passenger side) terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace seat belt assembly (passenger side). Refer to 

SB-6, "SEAT BELT RETRACTOR :

Removal and Installation"

.

Pre-crash seat belt control unit (passenger side)

Ground

Continuity

Connector

Terminal

B231

6

Not existed

Seat belt assembly (passenger side)

Ground

Continuity

Connector

Terminal

B245

4

Existed

Seat belt assembly (passenger side)

Condition

Continuity

Terminal

3

4

When passenger side seat belt is fastened

Not existed

When passenger side seat belt is not fastened

Existed

5

When passenger side seat belt is fastened

Existed

When passenger side seat belt is not fastened

Not existed

SEAT BELT WARNING LAMP CIRCUIT

SBC-57

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SBC

N

O

P

SEAT BELT WARNING LAMP CIRCUIT

Component Function Check

INFOID:0000000006237937

1.

CHECK SEAT BELT WARNING LAMP FUNCTION-I

1.

Turn ignition switch ON.

2.

Check seat belt warning lamp function.

Is the inspection results normal?

YES

>> GO TO 2.

NO

>> Check combination meter circuit. Refer to 

MWI-57, "Work flow"

.

2.

CHECK SEAT BELT WARNING LAMP FUNCTION-II

1.

Sits in the passenger seat.

2.

Fasten the seat belt (passenger side).

3.

Check seat belt warning lamp function.

Is the inspection results normal?

YES

>> Seat belt warning lamp circuit is normal.

NO

>> Check seat belt warning lamp circuit. Refer to 

SBC-57, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006237938

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3

minutes. (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device. 

1.

CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE) CIRCUIT-I

1.

Turn ignition switch OFF.

2.

Disconnect air bag diagnosis sensor unit harness connector and seat belt assembly (passenger side) har-
ness connector.

3.

Check continuity between air bag diagnosis sensor unit harness connector and seat belt assembly (pas-
senger side) harness connector.

4.

Check continuity between air bag diagnosis sensor unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace harness or connector.

2.

CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE) CIRCUIT-II

Check continuity between seat belt assembly (passenger side) harness connector and ground.

Condition

Seat belt warning lamp

Seat belt (driver side) is fastened

Not illuminated

Seat belt (driver side) is unfastened

Illuminated

Condition

Seat belt warning lamp

Seat belt (passenger side) is fastened

Not illuminated

Seat belt (passenger side) is unfastened

Illuminated

Air bag diagnosis sensor unit

Seat belt assembly (passenger side)

Continuity

Connector

Terminal

Connector

Terminal

B228

29

B245

3

Existed

Air bag diagnosis sensor unit 

Ground

Continuity

Connector

Terminal

B228

29

Not existed

SBC-58

< DTC/CIRCUIT DIAGNOSIS >

SEAT BELT WARNING LAMP CIRCUIT

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE)

Check seat belt assembly (passenger side).
Refer to 

SBC-58, "Component Inspection [Seat Belt Assembly (Passenger Side)]"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace seat belt assembly (passenger side). Refer to 

SB-6, "SEAT BELT RETRACTOR :

Removal and Installation"

.

4.

CHECK SEAT BELT WARNING LAMP CIRCUIT

1.

Disconnect combination meter harness connector.

2.

Check continuity between air bag diagnosis sensor unit harness connector and combination meter har-
ness connector.

3.

Check continuity between seat belt warning unit and ground.

Is the inspection results normal?

YES

>> GO TO 5.

NO

>> Replace harness or connector.

5.

CHECK COMBINATION METER POWER SUPPLY AND GROUND CIRCUIT

Check combination meter power supply and ground circuit.
Refer to 

MWI-64, "COMBINATION METER : Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness or connector.

6.

REPLACE COMBINATION METER

Replace combination meter.
Refer to 

MWI-85, "Removal and Installation"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace air bag diagnosis sensor unit. Refer to 

SR-26, "Removal and Installation"

.

Component Inspection [Seat Belt Assembly (Passenger Side)]

INFOID:0000000006237939

1.

CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE)

1.

Turn ignition switch OFF.

2.

Disconnect seat belt assembly (passenger side) harness connector.

3.

Check continuity between seat belt assembly (passenger side) terminals.

Seat belt assembly (passenger side)

Ground

Continuity

 Connector

Terminal

B245

4

Existed

Air bag diagnosis sensor unit

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

M59

24

M34

36

Existed

Air bag diagnosis sensor unit 

Ground

Continuity

Connector

Terminal

M59

24

Not existed

SEAT BELT WARNING LAMP CIRCUIT

SBC-59

< 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

>> INSPECTION END

NO

>> Replace seat belt assembly (passenger side). Refer to 

SB-6, "SEAT BELT RETRACTOR :

Removal and Installation"

.

Seat belt assembly (passenger side)

Condition

Continuity

Terminal

3

4

When passenger side seat belt is fastened

Not existed

When passenger side seat belt is not fastened

Existed

5

When passenger side seat belt is fastened

Existed

When passenger side seat belt is not fastened

Not existed

 

 

 

 

 

 

 

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