Re: Dealer diagnosed the problem as the EBTCM and Oxygen...
Electronic Brake control Module controls odo, speedo, if not working also the TCS, ABS, check engine lights come on and power steering is affected. New $2000, I got mine used for $170 or you can re build at modulemasters.com
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PRE-DIAGNOSTIC INSPECTIONBefore diagnosing ABS/TCS, perform a comprehensive visual inspection of system as follows.Check ABS/TCS wiring harness connectors for looseness. Check harness routing; pay particular attention to wheel speed sensor wiring harness routing. Check fuses No. 1D, 5B and 6B in instrument panel fuse block. Check fuses No. 1 and 2 in underhood fuse block. Check brake fluid level in master cylinder reservoir. Check brake fluid level in Pressure Modulator Valve (PMV) assembly reservoir. Ensure parking brake is fully released. Ensure parking brake switch is functioning properly. Always perform ABS/TCS system functional check before using DIAGNOSTIC CODE CHARTSThe EBCM/EBTCM has self-diagnostic capability, which can detect system failures. Fault codes stored by EBCM/EBTCM can be displayed using Tech 1 scan tester. There are no provisions for flash code diagnostics.Begin ABS/TCS diagnosis with PRE-DIAGNOSTIC INSPECTION procedure. If failures are found during pre-diagnostic inspection, perform necessary repairs, and proceed with ABS/TCS FUNCTIONAL CHECK. See Fig. 5 .If no failures are found during pre-diagnostic inspection, go to ABS/TCS FUNCTIONAL CHECK. See Fig. 5 . The ABS/TCS FUNCTIONAL CHECK will either indicate ABS/TCS is functioning properly or direct technician to various diagnostic procedures such as diagnostic charts, symptom diagnosis or BRAKE warning light diagnosis.CHART D - TRACTION OFF WARNING LIGHT ON CONTINUOUSLY & NO DTC SET (BUICK WITH UH8 OR U2A INSTRUMENT CLUSTER)Circuit DescriptionWhen ignition switch is first turned to RUN position, EBTCM goes through a self-test, which lasts 2-4 seconds. During self-test, EBTCM commands TRACTION OFF indicator warning light on. Powertrain Control Module (PCM) can also command EBTCM to set a Code 75 which will illuminate TRACTION OFF indicator.Traction control switch is located either on instrument panel center trim plate or driver's front door trim panel. Switch allows driver to select traction control mode (on/off). When traction control system is turned off, TRACTION OFF warning light comes on.EBTCM monitors transaxle temperature through
means that the EBTCM has detected a problem within the system.The
message indicates that a malfunction exists in the stability enhancement
EBTCM (Electronic Brake and Traction Control Module) is
an electronic control module that controls and operates the Anti-Lock
brake system, Traction Control System and Stability system. If this
module detects a problem, it "asks" the cluster to inform you by
displaying a warning message.
should have your car scanned for trouble codes with a scan tool, the
Tech2 scan tool is preferred because other scan tools may not
communicate with the EBTCM modules.
An Electronic Brake Control Module, or EBCM, monitors the rotation speed of each wheel. The EBCM decreases the braking force to a wheel when it detects that the wheel is rotating more slowly than the other wheels. Additional details for GM vehicles in this link: absfixer.com/how_do_i_remove.
EBTCM is the Electronic Brake Traction Control Module device.
What you will have to do is get the codes from the ABS module.This will let you know what sensor or wiring is bad.But you need the code to diagnose the problem.Yes it could be a hub but you need to know which hub bearing.It could also be wiring.Best to get codes.Hope this helps.A Good luck.
The P1700 is just a request for the check engine light, and this is caused by the U2108. The U2108 is basically telling you that the Electronic Brake and Traction Control Module (EBTCM) is not communicating with the powertrain control module, or the transmission control module. The very first thing we must do is verify that the fuses that power the ebtcm are not blown and that they are powered. At this point I would like you to verify that the fuse labeled ABS in the fuse block is not blown and that it is powered with the key in the on position. I would also like you to verify that the fuse labeled V1 inthe power distribution box is not burnt and that this is powered also. After this we need to move to the ebtcm to verify that you have voltage at pins 15,17,18 and that you have a ground at 19 and 16. This would verify that the ebtcm is getting the proper voltage supplies to operate. The end result of this may possibly be a faulty ebtcm, but at this point we really need to check these items prior.Feel free to contact me with any questions at this point! Thanks!
Part of the anti-lock brakes and traction control system. The BPMV is located at the left hand front corner of the engine compartment, attached to the EBTCM (electronic brake control module).
CAUTION: For safety reasons, the brake pressure modulator valve
assembly must not be repaired, the complete unit must be replaced. With
the exception of the EBTCM ,no screws on the brake pressure modulator valve assembly may be
loosened. If screws are loosened, it will not be possible to get the
brake circuits leak-tight and personal injury may result.
It sounds like an ABS sensor or some other sensor going out. IF it's the main computer for the traction/handling system that's big $$$$$ like $1300+ I think. This problem frequently starts out as occasional, goes to frequent, and then full time. It usually relates to the ABS/TC assembly on the frame in front of the engine. It is made of two parts, the EBTCM (the electronic part) wich is bolted to the mechanical half, the BPMV (Brake pressure modulating valve.) Sometimes the electronic grounds for this assembly get corroded or loose. Bad connectors for the ABS speed sensors at each wheel hub can also go bad. EBTCM = Electronic Brake Traction Control Module Good luck and hope this helps.