I recently failed a 90 inspection at Speedco. My ABS light for the trailer did not illuminate (come on) during initiall start up of my ProStar daycab.
I changed the two fuses and the celinoid. Still won't come on. I am not connected to a trailer.
Any ideas?
Trailer ABS light not illuminating during ignition
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Moose Macy, Oct 25, 2016.
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??? Connect the #### thing see if it lights then.
I had a ABS trailer too in addition to a tractor back in 2001, there was a yellow light on the left rear of the trailer to tell me the ABS is kicked in when it does.Kyle G. Thanks this. -
You might want to mention the year and model of the truck.
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If you aren't hooked to a trailer, why WOULD the trailer ABS light come on?
...and what exactly is a "90 inspection", and why would you go to a lube shop to have it done?x1Heavy and Snailexpress Thank this. -
Next, Truck ignition is ON, all lights OFF
Check the circuit from ABS unit to ABS light. Bulb is good?, bulb socket is good?
Pull the pig tail out of truck receptacle check 12 volt is present on central pin. The pin is bigger then any other.
If no 12 volt the problem is in truck
If power is here check the trailer end of pig tail. If no 12 volt the problem is in pig tail or connection.
If 12 volt is on trailer side of pig tail check the electrical cable under trailer for any damage. Look for insulation bulging the sign copper inside is rotten. Dont give up if you fixed one but still no blink. On my cable was three damages. Get under trailer tandems area look for the small box ABS unit. Check with manufacturer website for pin out and check power directly on ABS unit. -
...and what exactly is a "90 inspection", and why would you go to a lube shop to have it done?
90 points inspection?
I wouldn't trust Speedco such a big job. They can not grease six points without missing at least three. -
LMFAO. Ok You got me on the why WOULD the abs come on. Story of my life.
Luckly the others caught up with the 90 point problem.Snailexpress Thanks this. -
Yes, you are correct light only comes on when trailer/chassis has been connected with pigtail.
But, FMCSA has new or recently revised rules about inspector seeing all warning lights when starting vehicle.
That would be lights on the dash.
Thank you very much for responding.x1Heavy Thanks this. -
I should take myself somewhere quiet and end it. I know what those old trailers with the then new ABS of the 2000 era should behave and DID behave when under ABS honest by god applications with that light. Hence my original behavior here.
Now you are telling me and all others that they are changing rules AGAIN? To make things MORE complicated up front" Is that it?Moose Macy Thanks this. -
Take it to a shop that would know & understand this and you'll be fine.
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