Seat Belt Buckle Switch: Testing and Inspection

INSPECT BUCKLE SWITCH CONTINUITY
a. Check that continuity exists between terminal 2 and 4 on the switch side connector with the switch ON (belt fastened).
b. Check that no continuity exists between terminal 2 and 4 on the switch side connector with the switch OFF (belt unfastened).
If operation is not as specified, replace the seat belt inner.




INSPECT SEAT BELT BUCKLE SWITCH CIRCUIT
Disconnect the switch connector and inspect the connector on wire harness side, as shown.