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dsalinas1939
Top Member

USA
1316 Posts

Posted - 07/13/2015 :  07:23:01 AM  Show Profile  Reply with Quote
i am trying to locate the relay for the parking brake there are like ten relays in side door but no labels anyone have a location diagram its an 09 ce200 dt466 with hydro brakes..... also i am having an intermitten abs light the abs light comes on trac light comes on and yellow triangle code reads left rear abs sensor i checked the adjustment i pulled apart the hub check the ring it all looks good so i put in a new sensor and still i am getting the code intermittenly ever now and then if u take it out on test drive the two rear abs sensor lose the signal for a split second and then they come right back i checked all the wiring from sensor to control module ohms everything came up good so i swapped the module out and it was ok for a few days and now its doing it again any ideas???????????????? o and what is the proper gapping for the abs sensor

Edited by - dsalinas1939 on 07/30/2015 10:07:41 AM

mastertech
Advanced Member

274 Posts

Posted - 07/19/2015 :  9:07:20 PM  Show Profile  Visit mastertech's Homepage  Reply with Quote
I think that relay is internal to the hcu . Not findable or replaceable. Are you getting a code for it being open or low power?
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dsalinas1939
Top Member

USA
1316 Posts

Posted - 07/20/2015 :  07:57:39 AM  Show Profile  Reply with Quote
yes i am getting a relay under voltage code but i was also losing my right rear abs sensor signal i adjusted sensor and checked wiring and it stil would all of a sudden lose the signal for like a second then be fine i went ove all wiring again and replaced the sensor and still had the problem so i swapped out the brake module with another bus to see if it was a click in computer and so far its good
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mastertech
Advanced Member

274 Posts

Posted - 07/26/2015 :  7:21:01 PM  Show Profile  Visit mastertech's Homepage  Reply with Quote
Yep wabco ecms are known to get irrational and uncooperative.
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dsalinas1939
Top Member

USA
1316 Posts

Posted - 07/27/2015 :  04:05:02 AM  Show Profile  Reply with Quote
will the ecm swap worked for about a week and now once again the right rear and left rear abs sensor lose signal for about a second setting the abs like then the sensor signals come back and are fine for awhile again i pulled the harness out from rear to ecm and checked wiring ohms them out everything looks good this is driven me crazy
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