Brake light and abs light stay on???

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BIGTRKMAN

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Sep 7, 2010
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OK never did this until recently but in my 97 the two lights are staying on and its anoying... does anyone have an idea what it could b? A sensor or ??? l checked the brake fluid and for leaks. l didn't find ne thing wrong... Any help or ideas is apreciated...
 
First thing i would do is pull out the rear abs sensor located in the differential housing and inspect it, see if its broke or loaded with metal.
 
BIGTRKMAN said:
OK never did this until recently but in my 97 the two lights are staying on and its anoying... does anyone have an idea what it could b? A sensor or ??? l checked the brake fluid and for leaks. l didn't find ne thing wrong... Any help or ideas is apreciated...
Click to expand...
Does your truck have 4 wheel anti-lock or rear wheel anti-lock? You need a scanner to read codes on the 4WAL system, you can check the codes without a scanner on the RWAL system. Most of the time the lights are caused by the rear wheel speed sensor, but it could be a front sensor, Controller Anti-lock Brakes, and I've even seen a few trucks with damaged tone rings in the rear axle.

DTC Procedure for RWAL
1) Turn ignition switch to RUN position. Momentarily ground
terminal No. 13 of Data Link Connector (DLC). DLC is located at bottom
of instrument panel to left of steering column. DLC terminal No. 13
wire color is Black.
2) Both ABS and BRAKE warning lights will begin to flash.
Initial flash will be a long flash followed by one or more short
flashes. Long flash indicates beginning of DTC number. Short flashes
are a continuation of DTC number. Both long and short flashes must be
counted for an accurate DTC number.

DTC IDENTIFICATION TABLE
DTC Failure Detected
1 ............................................... Not Used
2 .............. Open Isolation Valve Wiring Or Faulty CAB
3 ................... Open Dump Valve Wiring Or Faulty CAB
4 ...................................... Closed HCU Switch
5 ..................... More Than 16 Dump Pulses Generated
In 2WD Vehicles (Disabled For 4WD)
6 ............. Erratic Speed Sensor Reading While Rolling
7 ........ CAB Fuse Pellet Open, Isolation Output Missing,
Or Valve Wiring Shorted To Ground
8 ............ Dump Output Missing Or Valve Wiring Shorted
To Ground
9 (1) ...... Speed Sensor Wiring/Resistance (High Reading)
10 .......... Speed Sensor Wiring/Resistance (Low Reading)
11 (1) ......... Brake Switch Always On, ABS Warning Light
Comes On When Speed Exceeds 40 MPH
12 .............................................. Not Used
13 ........................... CAB Phase Lock Loop Failure
14 ............................. CAB Program Check Failure
15 ....................................... CAB RAM Failure
 
I have this same problem on my 2000. I found out what it is . The front ABS sensor line was rubbing the brake rotor after we put the hub bearing on it. I did'nt get the line put in the holder thats on there and it rubbed a hole in it.
 
I will check it out tomorow.. been busy at work but just have the rear abs. Thanks for the info!
 
Diehard Ram said:
I have this same problem on my 2000. I found out what it is . The front ABS sensor line was rubbing the brake rotor after we put the hub bearing on it. I did'nt get the line put in the holder thats on there and it rubbed a hole in it.
Click to expand...
So did you have to replace the line?

Mine does it but not all the time.
 
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