Content Inside :
Making an accurate diagnosis in a timely manner can be a challenge. Often, expensive components are replaced and it is later determined that the malfunction was due to a connection-related problem or sensor contamination, which affects the air gap spacing. SLOW SPEED ABS ACTIVATION GM reports that complaints of slow speed ABS activation with no stored diagnostic trouble codes (DTC) may occur on some trucks and sport utility vehicles. Action to be taken: 1) Safely raise and support the vehicle. 2) Disconnect the front wheel speed sensors from their harness and frame. 3) With a digital volt-meter attached to the terminals of each wheel speed sensor connector, rotate the wheel in a clockwise direction approximately one revolution per second. The minimum reading on the meter should be at least 350 ACmV’s. If the reading is less than that, remove the sensor. 4) Plug the sensor bore to prevent debris from falling into the hub. 5) With a wire brush, sandpaper, or another suitable cleaning device, thoroughly clean the speed sensor mounting surface. 
Install the original sensor or replacement sensor in the hub and make certain it is seated flush against the hub. 9) Re-check the sensor voltage while rotating the wheel as previously described. The voltage should read a minimum of 350 ACmV’s. LOSS OF EBCM GROUND GM advises that electronic brake control modules (EBCM) are being replaced needlessly due to poor ground circuits. The inadequate ground circuit is resulting in an illuminated ABS lamp and trouble codes CO265 and CO201 stored in memory. DTC U1041 may be set in other modules and a loss of communication may be incurred with the EBCM.
Tags : digital volt meter, sport utility vehicles, ground circuits, speed sensors, air gap, wheel speed, acmv, accurate diagnosis, electronic brake control, speed sensor, control modules, slow speed, sandpaper, gap, contamination
If you see unrelated pdf files with the description or copyrighted material published, please report to us, we'll correct/delete it it as soon as possible.NONE OF THOSE MATERIALS ARE HOSTED IN THIS SERVER NOR UPLOADED BY ME IN SOMEONE'S SERVERS. Read our DISCLAIMER for more detail.
We are neither affiliated with authors and brands nor responsible for its content and change of content.
Information contained herein is provided "as is" without warranty of any kind, either expressed or implied, including any warranty of merchantability or fitness for a particular purpose. In no event shall ANYONE be held liable for any loss of profit, special, incidental, consequential, or other similar claims.