Emergency Brake Light and ABS
11-17-2011, 06:51 PM
#13
You're point goes to my question; what sensor reads low hydraulic pressure in the system? Part number? Where is the transducer physically located?
He did answer your question, if you have a fault in your system (air in the lines) the brake light indicates a fault from reading the low hydraulic pressure. In turn the ABS light turns on, telling you its disabled to prevent damage. Its an almost full proof system, possibly air in the ABS itself.
11-17-2011, 07:14 PM
#14
It's a Canadian thing eh!
There is a low fluid level warning inside of the master cylinder, if there is an air bubble a float will trip and will disable the ABS and turn on the light as well as the brake light.
11-17-2011, 07:40 PM
#15
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What your looking for is called the Pressure Differential Valve its located on the driver side in the frame about two feet below your master cylinder you can find it by following the two lines down to the frame cant miss it its a 6 in by 3 in block with two brake lines going in and four coming out. theres a procedure to reset your valve to the center position but this is usally done when you have had a major malfunction like a broken off brake line and dumped most of the master cylinder.
Also theres a low fluid level sensor that is right under the reservoir on the master cylinder you can spot this by the two wires coming out the right side.
My electrical diagram shows that if the Differential valve trips it can shut off the ABS module, maybe thats why both your lights are on?
Also theres a low fluid level sensor that is right under the reservoir on the master cylinder you can spot this by the two wires coming out the right side.
My electrical diagram shows that if the Differential valve trips it can shut off the ABS module, maybe thats why both your lights are on?
Last edited by wbroad; 11-17-2011 at 07:43 PM.
11-17-2011, 07:57 PM
#17
It's a Canadian thing eh!
Ive never hear of it either, you mean the proportioning valve?
(Edit) Sorry no thats on the master cylinder, my mistake, what Shawn said.
(Edit) Sorry no thats on the master cylinder, my mistake, what Shawn said.
Last edited by sylver91; 11-17-2011 at 08:04 PM.
11-17-2011, 08:05 PM
#19
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I just had the same issue my parking brake light would not go off and the brake wasnt ingadged it ended up comming back to an issue with my instrument cluster so i had to have it replaced...Its a 600 part from the factory...Im not sure if thats whats wrong with your truck but it might be something you would want to look into