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 abs light on cannot power up scan tool
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bandit
Active Member

16 Posts

Posted - 01/28/2014 :  08:12:59 AM  Show Profile  Visit bandit's Homepage  Reply with Quote
I have a freightliner with a abs light on when I go to hook up scan tool comes on for a second then shuts off. I hear the wabco controller clicking when tring to come on, also the abs light goes off when headlights are on?? could the controller be bad???

bwest
Administrator

United States
2242 Posts

Posted - 01/28/2014 :  08:43:58 AM  Show Profile  Reply with Quote
Have you checked grounds and power connections?

Bryan
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bandit
Active Member

16 Posts

Posted - 01/29/2014 :  10:11:26 AM  Show Profile  Visit bandit's Homepage  Reply with Quote
I have checked the connections at the controller, they are good. What really confuses me is how are the headlights tied to the abs?
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kd4jfd
Top Member

USA
1152 Posts

Posted - 02/13/2014 :  07:05:54 AM  Show Profile  Click to see kd4jfd's MSN Messenger address  Send kd4jfd a Yahoo! Message  Reply with Quote
The headlights are probably DRLs, and one of the ways they can be activated is when someone releases the parking brakes. Perhaps there is a crossed/shorted wire?

539 - Repair work in progress! 349 for sale!SOLD!for sale!sold? SOLD and GONE!
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