Seat Belt Buckle Switch (Passenger Side)

SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)

Description

- 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 switch is not fastened, illuminates the seat belt warning lamp on the combination meter.
- The seat belt buckle switch is installed in the seat belt buckle.


Component Function Check


1. CHECK PRE-CRASH SEAT BELT CONTROL UNIT INPUT SIGNAL

With CONSULT
When checking "BUCKLE SW RH" on DATA MONITOR screen, check that ON/OFF display changes are synchronized with the insertion operation to the seat belt buckle.





Is the inspection result normal?
YES- Seat belt buckle switch (passenger side) circuit is normal.
NO- .


Diagnosis Procedure


1. CHECK PRE-CRASH SEAT BELT CONTROL UNIT INPUT SIGNAL

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





Is the inspection result normal?
YES- Seat belt buckle switch (passenger side) circuit is normal.
NO- GO TO 2.

2. CHECK SEAT BELT BUCKLE (PASSENGER SIDE) SWITCH CIRCUIT

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





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





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace harness between pre-crash seat belt control unit (passenger side) and seat belt buckle switch (passenger side).

3. CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT

Check continuity between seat belt buckle switch (passenger 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 (PASSENGER SIDE)

Check seat belt buckle switch (passenger side). .
Is the inspection result normal?
YES- Replace pre-crash seat belt control unit (passenger side).
NO- Replace seat belt buckle switch (passenger side).


Component Inspection (Belt Buckle Switch)


1. CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)

1.Turn ignition switch OFF.
2.Disconnect seat belt buckle switch connector.
3.Check continuity of seat belt buckle (passenger side).





Is the inspection result normal?
YES- INSPECTION END
NO- Replace seat belt buckle switch (passenger side).