Seat Belt Buckle Switch: Testing and Inspection

INSPECT SEAT BELT BUCKLE SWITCH CONTINUITY
a. Check that continuity exists between the terminals 1 and 4 on the switch side connector with the switch ON belt fastened.
b. Check that continuity exists between the terminals 2 and 4 on the switch side connector with the switch OFF belt unfastened.
If operation is not as specified, replace the switch.







INSPECT SEAT BELT BUCKLE SWITCH CIRCUIT
Disconnect the switch connector and inspect the connector on wire harness side, as shown.
If continuity is not as specified, inspect the circuits connected to other parts.