ABS fault, Possible Causes
#1
ABS fault, Possible Causes
I had the standard ABS - ASC - TRAC problem on my 2000 xk8. I removed the module for repair and opened the system to do it. At that time I got a little fluid leak and air of course entered the system. While the module was out I started the car and it threw many error messages and a P1637 code. Reinstalled the module still getting the ABS fault after clearing the P1637 code. I don't have a code reader for "C" abs codes. Only error now is the P1000 as the OBD resets.
My question is as the OBD resets should I still be getting the ABS fault? Also will air in the system cause a ABS fault? I know I need to bleed the brakes. I have checked the sensors, fuses and connections and they all are OK.
My question is as the OBD resets should I still be getting the ABS fault? Also will air in the system cause a ABS fault? I know I need to bleed the brakes. I have checked the sensors, fuses and connections and they all are OK.
#2
#3
Problem Solved
I have driven the car with the repaired module in place and still had the ABS - TRAC - ASC errors.
As a possible fix I disconnected the battery and let the car set over night. Hooked up the module and the battery, started the car and no error messages except ABS light. Drove a short distance and the ABS light went out!!
Problem solved. I think with 2000 Computer technology it is best to cut off the power and let the system "boot" itself and get rid of the clutter. I did not do a hard reset.
By the way the Module was repaired by Module Repair Pros out of Van Nuys California.
As a possible fix I disconnected the battery and let the car set over night. Hooked up the module and the battery, started the car and no error messages except ABS light. Drove a short distance and the ABS light went out!!
Problem solved. I think with 2000 Computer technology it is best to cut off the power and let the system "boot" itself and get rid of the clutter. I did not do a hard reset.
By the way the Module was repaired by Module Repair Pros out of Van Nuys California.
Last edited by David Dougherty; 05-12-2017 at 10:12 AM.
#4
Join Date: Apr 2017
Location: Norfolk Virginia Beach
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Had a similar problem. I tried soldering the typical spots on the ABS module but not sure I got it hot enough. Lights didn't come on the first time I started the car but did the second and thereafter. Going to pull and hit with some heat again. Checked impedance of sensors and they all checked out.
#5
The code P1637 is for communication between the ECM and the ABS module. The correct code is C1637 and is often intermittent. NOTE: [IF] this happened after the module was rebuilt and installed, and you do a hard reset [maybe] ... I would only [suggest] that is the problem. What you can consider doing is check all powers and grounds to the module PLUG. On the ABS plug at the ABS module itself ... Using a multimeter ...
1. There should be POWER at pins 9 (brown/red), 20 (white/blue) and 25 (brown/yellow).
2. You should have GROUND at pins 8 and 24 both black wires.
3. ABS sheet is for a ground [fuse] check. I do not have the ABS pinpoint test Sheet. Sorry.
1. There should be POWER at pins 9 (brown/red), 20 (white/blue) and 25 (brown/yellow).
2. You should have GROUND at pins 8 and 24 both black wires.
3. ABS sheet is for a ground [fuse] check. I do not have the ABS pinpoint test Sheet. Sorry.