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-III
When checking "SB SW RH SIG" 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 - SEE Diagnosis Procedure.




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





4. Check continuity between pre-crash seat belt control unit and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace harness between pre-crash seat belt control unit 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). SEE Component Inspection.
Is the inspection result normal?
YES - Replace pre-crash seat belt control unit. Removal And Installation.
NO - Replace seat belt buckle switch (passenger side).




Component Inspection
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).


SEAT BELT BUCKLE SWITCH - PASSENGER SIDE





Description
- Seat belt buckle switch is installed in seat belt buckle.
- Seat belt buckle switch detects condition of seat belt.




Component Function Check
1.CHECK FUNCTION
Check that power walk-in function does not activate when seat belt is fastened.
Is the inspection result normal?
YES - Seat belt buckle switch (passenger side) is OK.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK SEAT BELT BUCKLE SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between passenger seat control unit harness connector and ground.





Is the inspection result normal?
YES - Seat belt buckle switch (passenger side) circuit is OK.
NO - GO TO 2.
2.CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) CIRCUIT
1. Disconnect passenger seat control unit connector and seat belt buckle switch (passenger side) connector.
2. Check continuity between passenger seat control unit harness connector and seat belt buckle switch
(passenger side) harness connector.





3. Check continuity between passenger seat control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace harness.
3.CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) 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. SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 5.
NO - Replace seat belt buckle switch (passenger side). Exploded View.
5.CHECK PASSENGER SEAT CONTROL UNIT OUTPUT SIGNAL
1. Connect passenger seat control unit connector.
2. Check voltage between passenger seat control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 6.
NO - Replace passenger seat control unit. Removal And Installation.
6.CHECK INTERMITTENT INCIDENT
Check intermittent incident. Intermittent Incident.
- INSPECTION END




Component Inspection
1.CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)
1. Turn ignition switch OFF.
2. Disconnect seat belt buckle switch (passenger side) connector.
3. Check continuity between seat belt buckle switch (passenger side) terminals.





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