Hello,
Sorry I don't come onto the Au forums very often but check all the seat connections, also has the dash been out recently?
The link below should help reset the system providing there are no actually faults present.
http://www.lextreme....irbaglight.html
Also the pre October 1994 model uses OBDI diagnostics so no code reader is needed for the codes, the link below shows how to get the codes for all systems using a paper clip!
If your car has a non gated shifter ( in other words it just goes backwards and forwards) it will be this model
http://www.lexls.com...odereading.html