Seat Belt Buckle Switch Signal Circuit

SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

Description

Transmits a seat belt buckle switch signal to the unified meter and A/C amp.


Component Function Check


1. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL

1.Connect the CONSULT-III.
2.Select the "Data Monitor" of the "METER/M&A" and check the "BUCKLE SW" monitor value.





- INSPECTION END


Diagnosis Procedure


1. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL

1.Turn ignition switch ON.
2.Check voltage between unified meter and A/C amp. harness connector terminal and ground.





Is the inspection result normal?
YES- Replace unified meter and A/C amp.
NO- GO TO 2.

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

1.Turn ignition switch OFF.
2.Disconnect unified meter and A/C amp. connector and seat belt buckle switch (driver side) connector.
3.Check continuity between unified meter and A/C amp. harness connector terminal and seat belt buckle switch (driver side) harness connector terminal.





4.Check harness continuity between unified meter and A/C amp. harness connector terminal and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair harness or connector.

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

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





Is the inspection result normal?
YES- INSPECTION END
NO- Repair harness or connector.


Component Inspection


1. CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE)

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





Is the inspection result normal?
YES- INSPECTION END
NO- Replace the seat belt buckle (driver side). Removal and Installation.