Seat & Belt System Testing
NOTE:
Engine cranks when 3-wire connector near fuse block is disconnected or when turning ignition to "START" with seat belts unfastened and no one sitting on seats.
- With ignition "ON", belts unfastened, 3-wire connector connected, press and release driver and passenger seat cushion. Interlock relay should click twice at each seat position. With two clicks at both positions, go to step 2 ); two clicks at one position only, go to step 5); and only one click or no click at both positions, go to step 7).
- Sit on seat, hold seat belt release button in and connect belt. Relay should click when belt is fastened.NOTE: Holding release button prevents snap lock from making more noise than relay.
Perform same test on opposite front seat position to determine which belt does not click relay when fastened. If relay clicks for one belt only, go to step 3 ). If relay does not click when belts are fastened, remove module from under seat and disconnect multiple connectors. Connect a self-powered test light to ground and BLACK wire in 10-pin connector. If light comes on, replace module; if not, repair ground wire.
- Turn ignition "OFF", move seat forward and disconnect seat belt wire connector at position where there was no click. Connect a self-powered test light to both terminals in belt side of wire connector and connect belt buckle. If light fails, on vehicles with electronic module, or light comes on; vehicles with mechanical relay module, replace defective seat belt and stop test if problem is corrected.
- Reconnect seat belt wire connector, remove module and disconnect both multiple connectors. Connect a self-powered test light to the two wires in 10-pin connector for seat belt in question. If test light fails, repair open circuit in one or both wires leading from belt connector to 10-pin connector. If light comes on, connect tester to ground and BLACK wire in 10-pin connector. If light comes on, replace module; if light fails, repair ground connection BLACK wire to body.CAUTION: To prevent replacement module failure, be certain interlock relay or reminder buzzer is not shorted internally.
- Disconnect seat sensor connector at seat position where two clicks cannot be heard. Connect self-powered test light to terminals in sensor side of connector. Press on seat position and replace seat sensor if light fails. If light comes on, go to step 6 ).
- Reconnect seat sensor. Remove module from under seat and disconnect both module connectors. Connect self-powered test light to BLACK wire in 4-wire connector and to wire leading to seat sensor in question. Press and release seat cushion. If test light comes on, replace module; if not, repair open circuit in one or both wires from 4-wire connector to seat sensor. Stop tests if problem is corrected.
- Disconnect 3-wire connector near fuse block. Remove module from under seat and disconnect module connectors. Connect self-powered test light to DK. GREEN wire in 10-pin connector and ground. Light on, repair short in wire between connectors. Light off, go to step 8 ).
- Connect self-powered test light to body ground and to each wire in 4-wire connector. Light on with any wire, repair short in wire to seat sensor. Light off for all wires, connect same test light to body ground and to black wire in 10-pin connector. Light on, replace module; light off, repair ground connection.