1996 Grand Cherokee Ltd 4.0ltr LPG
ABS light on.
When switching ignition on the ABS light comes on and does not go out until switching off again. (No special reason I can give, it just came on one day and that was it)
As I understand it (from a previous post that Mike P answered) if it does not go out before you move off then this is a short or broken connection and maybe not a sensor fault.
I have checked all the sensors and I get the same resistance reading by disconnecting and reading across the wires which does not show a short to earth.
I have also replaced the control unit (in Passenger foot well) with a spare but the light is still on.
Checked all fuses and relays. (By swapping with others)
I am now at a loss what to check next.
The questions I have are:
1) If you find the fault, will the ABS control unit/light reset itself?
2) If not can you reset the unit with or without a scanner. (If so what type?)
3) How much info can the dealership give if they scan the system (I don’t need them to tell me its not working,)
Can anybody suggest other things I need to look at, all ideas gratefully received.
What normally goes wrong with the ABS.?
