ABS light not coming on with ignition.

check fot M136 codes with diagn button. if u can see codes ABS unit is power supplied and it is OK, so u probably got faulty bulb, ABS -e throws WL code

if not - check ABS unit power supply in dr side pillar

 

what brand/part # ABS unit?

 

can u hear ABS solenoids clicking with ignirion on?

 

446 ????? ????

I suggest ABS-E, made in Wrozlaw, Poland. really it is latest generation

http://www.meritorwabco.com/MeritorWABCO_document/mm0112_FINAL.pdf

check power supply

 

I have an 06 Columbia, and the ABS lights don't come on when running the self diagnostics when I switch on the ignition. Fuses and bulbs are good. I can hear the valves clicking when I switch on theignition. Any ideas?

 

I have an 06 Columbia, and the ABS lights don't come on when running the self diagnostics when I switch on the ignition. Fuses and bulbs are good. I can hear the valves clicking when I switch on theignition. Any ideas?

 

stock columbia dashboard supports trailer to truck communication by PLC (Power line carrier), but some old ABS moduls wont supporting PLC ore trailer to trucktor CAN and WL wire was used ore ABS lamp on trailer to be seen in mirror. It was called bulleye