Nissan Cube. Manual - part 790

SEAT BELT BUCKLE SWITCH

SBC-7

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SBC

N

O

P

YES

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

NO

>> Refer to 

SBC-7, "PASSENGER SIDE : Diagnosis Procedure"

.

PASSENGER SIDE : Diagnosis Procedure

INFOID:0000000009949402

1.

CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect seat belt buckle switch (passenger side) connector.

3.

Turn ignition switch ON.

4.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect air bag diagnosis sensor unit connector.

3.

Check continuity between air bag diagnosis sensor unit harness connector and seat belt buckle switch
(passenger side) harness connector.

4.

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

Is the inspection result normal?

YES

>> Replace air bag diagnosis sensor unit. Refer to 

SR-26, "Removal and Installation"

.

NO

>> Repair or replace harness between air bag diagnosis sensor unit and seat belt buckle switch (pas-

senger side).

3.

CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) 

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

SBC-8, "PASSENGER SIDE : Component Inspection

(Seat Belt Buckle Switch)"

.

Is the inspection result normal?

YES

>> INSPECTION END

(+)

(–)

Condition

Voltage (V)

(Approx.)

Seat belt buckle switch (passenger side)

Connector

Terminal

B23

1

Ground

When passenger side seat belt is fastened

Battery voltage

When passenger side seat belt is not fastened

0

Air bag diagnosis sensor unit

Seat belt buckle switch (passenger side)

Continuity

Connector

Terminal

Connector

Terminal

B14

29

B23

1

Existed

Air bag diagnosis sensor unit

Ground

Continuity

Connector

Terminal

B14

29

Not existed

Seat belt buckle switch (passenger side)

Ground

Continuity

Connector

Terminal

B23

2

Existed

SBC-8

< DTC/CIRCUIT DIAGNOSIS >

SEAT BELT BUCKLE SWITCH

NO

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

SB-8, "SEAT BELT BUCKLE : Removal and

Installation"

.

PASSENGER SIDE : Component Inspection (Seat Belt Buckle Switch)

INFOID:0000000009949403

1.

CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)

1.

Turn ignition switch OFF.

2.

Disconnect seat belt buckle switch connector.

3.

Check continuity between seat belt buckle switch (passenger side).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace seat belt buckle switch (passenger side). Refer to 

SB-8, "SEAT BELT BUCKLE :

Removal and Installation"

.

Seat belt buckle switch (passenger side)

Condition

Continuity

Terminal

1

2

When passenger side seat belt is not fas-
tened

Existed

When passenger side seat belt is fas-
tened

Not existed

SEAT BELT WARNING LAMP CIRCUIT

SBC-9

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SBC

N

O

P

SEAT BELT WARNING LAMP CIRCUIT

Diagnosis Procedure

INFOID:0000000009949404

1.

CHECK SEAT BELT WARNING LAMP CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector.

3.

Turn ignition switch ON.

4.

Check voltage between combination meter harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace combination meter. Refer to 

MWI-93, "Removal and Installation"

.

2.

CHECK SEAT BELT WARNING LAMP CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect air bag diagnosis sensor unit connector.

3.

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

4.

Check continuity between combination meter and ground.

Is the inspection result normal?

YES

>> Replace air bag diagnosis sensor unit. Refer to 

SR-26, "Removal and Installation"

.

NO

>> Repair or replace harness.

Combination meter

Ground

Voltage (V)

(Approx.)

Connector

Terminal

M34

29

12

Combination meter

Air bag diagnosis sensor unit

Continuity

Connector

Terminal

Connector

Terminal

M34

29

M59

24

Existed

Combination meter

Ground

Continuity

Connector

Terminal

M34

29

Not existed

SBC-10

< DTC/CIRCUIT DIAGNOSIS >

SEAT BELT WARNING SYSTEM

SEAT BELT WARNING SYSTEM

Wiring Diagram - SEAT BELT WARNING SYSTEM -

INFOID:0000000009949405

JCHWM0541GB