ABS not working. No error codes or lights

[g8jka]

There is a way to do this, you can put the cluster in to test mode and select one of the functions to check dials and lights.

I've done it with mine before, just can't remember how

 

[Mario]

Well in my case I had found errors on the ABS looking at the diagnostics a year ago, fixed them and assumed it was all working.

Are you saying missing dash bulbs are reported by INPA? Or that INPA can be made to turn all the dash lights on at once to check?

The way I do this is different, on inpa digital values you can see if the ECU is signalling the cluster to switch on certain lights , for example you are testing brake warning lights you go to errors and see if there are any if you have some then on digital values you should see the relevant warming lights flagged to the cluster if you have nothing lit up on the cluster then issue is on cluster or wiring from ECU to cluster. Additionally if you have no errors then you can press the DSC button and see digital values change as you press and see if the cluster matches. You can test handbrake on clusters light that way or engine MIL etc. I do this now routinely on any new to me zed

 

[mrscalex]

The way I do this is different, on inpa digital values you can see if the ECU is signalling the cluster to switch on certain lights , for example you are testing brake warning lights you go to errors and see if there are any if you have some then on digital values you should see the relevant warming lights flagged to the cluster if you have nothing lit up on the cluster then issue is on cluster or wiring from ECU to cluster. Additionally if you have no errors then you can press the DSC button and see digital values change as you press and see if the cluster matches. You can test handbrake on clusters light that way or engine MIL etc. I do this now routinely on any new to me zed

I'll take a look at that. Not sure I've ever seen that before. I use INPA a lot but usually only checking for errors. Though I did have a little play with triggering windows & central locking from the software recently.

 

[NZ00Z3]

..

 

[Ianmc]

Good that my early car doesn't have ASC/DSC. Who needs driver aids (although ABS is OK!)