I,ve come across a similar problem on this model and i found some of the wires were chaffed on the drivers door pillar to door wiring loom. It's where i would of looked at first. Secondly i would have replaced the central door locking unit, which from memory also integrates the alarm system which is also connected to the horn and light circuit. Hope this helps.
Posted on Wednesday 14th of October 2009Don't understand this? Ask a question