ABS/PSM Failure but no codes

[BigBadBen]

Hi Guy's,

I looked through all the posts about this to see if there was something obvious but so far this has stumped me.

I took out the Hall Effect sensors at each wheel, they were filthy dirty so I thought this might have been the issue but no luck. The dash displays the ABS/PSM failure which is intermittent but there are no codes stored when I fire up my Autoenginity software.

I don't think the senors are bad, the wiring harness seem to be all fine.

I checked my brake lights are working properly as I have have read the switch on the brake peddle can cause this so I am at a loss as to what is causing this.

Any other ideas chaps. The investigation continues

Ben

[Loren]

Only Durametric Software, a PST2 or PIWIS tester will give fault codes for other controllers. Standard code readers only do engine fault codes.

1. Check your brake lights - if they do not work then it is your brake light switch.

2. If your brake lights are okay, it could be your MAF.

[BigBadBen]

Only Durametric Software, a PST2 or PIWIS tester will give fault codes for other controllers. Standard code readers only do engine fault codes.

1. Check your brake lights - if they do not work then it is your brake light switch.

2. If your brake lights are okay, it could be your MAF.

Hi Loren,

I hope you are keeping well my friend. First off thanks very much for the reply. I double checked my barke lights and they come on just fine so it's does not appear to be the brake switch.

I have a EVOMS GT800+ now that uses a Hitachi MAF which apparently has never seen a failure in these types of cars.

I have emailed Autoenginuity to see if their software can pick up ABS/PSM codes as they reference an enhancement to their standard product that can do this, just waiting for their reply.

Thanks for your pointers,

Cheers,

Ben

[wvicary]

It could be that the ABS module is failing. Do the ABS/PSM lights flash or on solid?

[BigBadBen]

It could be that the ABS module is failing. Do the ABS/PSM lights flash or on solid?

They are Solid

[wvicary]

What year is the vehicle?

[wross996TT]

long shot without codes, but steering sensor?

[BigBadBen]

long shot without codes, but steering sensor?

Thanks Statman, I have been reading up on the various faults that can cause this problem. There seem to be quite a few. I am going to order the Durametric Scan tool on Tuesday to see if it helps point me in the right direction. I have a feeling my AE scan tool needs the enhanced version which is why I am not seeing the codes.

I am not going to throw parts at this problem! I am sure it is something simple

Cheers,

Ben

It's an 02'

[BigBadBen]

Thought I would update this for others who run into this problem.

As I said before my ABS sensors were very dirty indeed so I recommend when you have your wheels off, take the sensors out and take a look, you might be surprised. I only have 54KM on my car too.

Even with them cleaned and double checking all the connectors and the brake pedal switch I was getting the failure pretty much all the time.

I next turned my attention to my Hitachi MAF even though there has never been a failure of this MAF. I unclipped the special harness that EVOMS supplies to connect the factory harness to the MAF and to my surprise both ends of the connectors were corroded (Those who have this setup might want to check it out). I cleaned both ends and thought this is it. Nope it made no difference.

As a finally resort I disconnected the battery to reset the DME. Since then I have not had one single failure. Now only time will tell if the problem has been fixed. I have a Durametric scan tool arriving today just in case it comes back.

So double check these things have been talking about, disconnect the battery to purge the ABS/PSM module of hard codes and see what happens.

I have a feeling there is nothing wrong.

Ben

[mattatk]

Ben,

Did you ever get any codes for the ABS/PSM faults?