Join Date: Jun 2009
County: Australian Capital Territory
156 JTS errors: VDC/ABS/ASR/cruise control/stop lights
Ignition on, foot brake on (just like it says in the owners’ manual), it goes through its checking routine and then I get VDC ERROR, ABS ERROR, and in addition the stop lights no longer work, the cruise control will not engage and according to the LED on the switch, the ASR is off. The brakes feel exactly the same as they always do, but I have not tried standing on the brakes to activate the ABS to see if the system really is not working.
Yes, I have been poking about in the electrical system of my Jan 2003 156 JTS with a manual gearbox - I have fitted an aftermarket radio, and an alarm system, but working backwards and disconnecting everything has still not corrected my dire warnings from the infocentre display.
This sounds to me as though I have managed to unplug or otherwise disturb a plug and socket that contains all of these services. Now if there was a conventional wiring diagram for our cars, I would be fine, but we are stuck with that ludicrous eLearn system. Does anybody think that this is a good idea? Can anybody use it? Do Alfa dealers really use this and nothing else?
I have removed every single fuse and tested it. They are all OK.
I took the shroud off the underside of the steering wheel looking for the steering angle sensor that some forum posts suggest might be the cause of at least some of my errors, but I was not able to decide which plug was the one that sometimes gives problems. All of the electrical plugs in there have good connections made.
I have no reason to suppose that there is anything wrong with my battery.
I have not tried any diagnostic equipment because I do not have any.
1. What would cause all those errors to appear at the same time?
2. What is the best diagnostic equipment for me to buy?
3. Is there a proper wiring diagram available for 156s? You know, like a map of the London Underground with all the cable colours and where the connectors might be found?
All responses gratefully received.