Seat Belt Buckle Switch (Driver Side)

SEAT BELT BUCKLE SWITCH (DRIVER SIDE)

Component Function Check


1. CHECK SEAT BELT BUCKLE SWITCH CIRCUIT (DRIVER SEAT)

Check BUCKLE SW LH on DATA MONITOR.





Is the inspection result normal?
YES- Inspection End.
NO- Check seat belt buckle switch (driver seat). Refer to "Diagnosis Procedure" .


Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" [1][2]Electrical Diagrams.

1. CHECK PRE-CRASH SEAT BELT CONTROL UNIT (DRIVER SIDE) OUTPUT SIGNAL

1.Turn ignition switch OFF.
2.Disconnect seat belt buckle switch (driver seat) harness connector.
3.Turn ignition switch ON.
4.Check voltage between seat belt buckle switch (driver seat) harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 2.

2. CHECK SEAT BELT BUCKLE SWITCH (DRIVER SEAT) CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect pre-crash seat belt control unit (driver side) harness connector.
3.Check continuity between pre-crash seat belt control unit (driver side) harness connector and seat belt buckle switch (driver seat) harness connector.





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





Is the inspection result normal?
YES- Replace pre-crash seat belt control unit (driver side). Refer to "Removal and Installation" Seat Belt Pre-Tensioner.
NO- Repair or replace harness or connector.

3. CHECK SEAT BELT BUCKLE SWITCH (DRIVER SEAT) GROUND CIRCUIT

Revision: March 20122013 Infiniti JX
Check continuity between seat belt buckle switch (driver seat) and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace harness or connector.

4. CHECK SEAT BELT BUCKLE SWITCH (DRIVER SEAT)

Check seat belt buckle switch (driver seat). Refer to "Component Inspection" .
Is the inspection result normal?
YES- Inspection End.
NO- Replace seat belt buckle switch (driver seat). Refer to "Removal and Installation" Service and Repair.


Component Inspection


1. CHECK SEAT BELT BUCKLE SWITCH (DRIVER SEAT)

1.Turn ignition switch OFF.
2.Disconnect seat belt belt buckle switch (driver seat) harness connector.
3.Check continuity between seat belt belt buckle switch (driver seat) terminals.





Is the inspection result normal?
YES- Inspection End.
NO- Replace seat belt belt buckle switch (driver seat). Refer to "Removal and Installation" Service and Repair.
Revision: March 20122013 Infiniti JX