Thread: D3 suspension fault nightmare, need help

There was a fair bit there yes, until i cleaned it all up.

Yes i did a full data log with the Autel, graphed it and there was nothing to show a fault or drop or rise or break or anything, it all performed perfectly, including the rears moving independently of eachother.

Disco DB, do you know where i can get a wiring diagram for the communication between the eas ecu and tcm? I have the wiring diagram for the sensors to eas and switches.

Recap, the fault codes are as follows, cycle the ignition and goes to this20220525_121535.jpg

The D3 workshop manual at the AULRO shop has the wiring diagrams.

Originally Posted by Iherbst87

Recap, the fault codes are as follows, cycle the ignition and goes to this20220525_121535.jpg

When do the faults return after having been cleared - within seconds or after a drive?

Edit: I see from your 1st post that it only faults once over a few kms/h. I'm favouring a faulty suspension module.

Thanks Disco DB, ill have a look, still learing how to use the forum.

It can happen 10m up the road, or 10km, whenever it wants too. Sometimes it never happens until i go on a gravel road above say 15km/h

Have you checked for chafing of the harness that runs along the chassis in from the left front wheel? Its retaining clip can break allowing the harness to be rubbed by the inside of the tyre on left turns which can cause short and open circuits in the height sensor and ABS circuits.

I have had a quick look at them, but no rubbing or anything that i could see, i was more concentrating on the rhr harness section

Originally Posted by DiscoDB

The D3 workshop manual at the AULRO shop has the wiring diagrams.

https://www.aulro.com/afvb/l319-disc...2=#post3075498

If that first pic by the OP is of the TCCM then I'd swap it out for another, you are likely to continue to have **** with it until its replaced. its a oh so common issue on a D3 due to its stupid location.

As a side note, you can use a second hand unit if you feel the need and it wont need to be calibrated.