Diagnosis Procedure

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.




SEAT BELT BUCKLE SWITCH


PASSENGER SIDE : 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. Refer to Component Inspection.
Is the inspection result normal?
YES - GO TO 5.
NO - Replace seat belt buckle switch (passenger side). Refer to 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. Refer to Removal and Installation.
6.CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to Intermittent Incident.
- INSPECTION END