Thread: Method of checking wheel speed sensor fault

Andy,
i never admit to being an expert but have a similar thing with mine. As dave said he wiggles his loom and gets the fault, i jiggle the sensor wire and get the same, it is intermittent. Need three hands to find it when using the multimeter.
the conclusion its the sensor wire between the connector and the sensor.

There was a really good post ages ago on how to fix a dry joint, and i believe it had all the , how to tell what it is clues. by can;t remember now lived near the gong and now is in qld, was it Stevo?

hope this helps as well


john

Well, folks, I've repeated Andy's efforts here (without replacing a sensor) all sensors seem OK and the speedo trick brings no joy. Some iron on the sensors, but cleaned off readily.

I have constant three amigos though. Now - other strings indicate squealing brakes (which I do have) and the pads are definitiely not genuine, so I'm hoping that is the cause of the problem.

Otherwise, another bloke in this area had a faulty set of valves. . . This Three Amigos is proving to be a right pain in the Toyota! A bit more fiddling yet

I read on one of the UK sites that if the 3 amigoes trio are tripped 3 times and the fault is still there (ie hasnt self rectified)they will stay on until cleared by testbook or similar even if the fault goes away or is repaired.
Could account for some(on the UK sites) that replace parts but still have the lights,a clear of the computer and all dissapears without a real answer.
My next move is a computer clear then possibley look at the SLABs for a connection problem
Andrew

Originally Posted by LandyAndy

Ok
THOUGHTS PLEASE PEOPLE!!!!
Thanks
Andrew

I found this some time back and have been reading with interest and waiting for a chance to attack MrC but his lights have stayed off now for several months. Have you seen these?
Shuttle valve
shuttle valve switch has arrived

Also came across some more info from somewhere but these are at work and will post it soon. Something about properly bleeding the ABS unit etc using the test book and the possibility of stale brake fluid also being a contributor.

Anyway those links above from Stevo have some excellent troubleshooting and I assume his problems have gone away now?

HTH
Peter

PS FWIW the lights in MrC seem to only come on when I hit a large pot hole. They also seem to be affected when I wiggle the wiring loom for the ABS module/controller/? in the engine bay. That's as far as I've gone for the moment.

just to continue this,,
fitted second hand sensor,,
no change.

Had the Amigo lights reset at Bundaberg,,
as far as I can tell,, on my grass skid pan,,, all wheels ABSing.


will jack it up and test it.

invoice said (according to Bundaberg there is NO printout from this system) erratic error from front left and error from drivers pretensioner.
"recommend replace both"