Please Help! ABS light

So what have you done to rule out a problem with the system external to the ABS module? For example the wheel speed sensors?

What about DTC codes?

Here's some information on an advanced ODB2 scanner that is capable of reading DTC codes from the PCM and other external modules such as the ABS. Having access to an advanced ODB2 scanner might make short work of your problem.

ForScan ODB2 scanner w ELM327 USB
https://www.stangnet.com/mustang-forums/resources/forscan-odb2-scanner-w-elm327-usb.57/

Consider the cost of rebuilding the module (for the 2nd time) and the frustration of not getting a fix verses the relative low cost of the USB ODB2 adapter ($30).

Howto perform charging system voltage drop test
https://www.stangnet.com/mustang-fo...perform-charging-system-voltage-drop-test.56/

Consider de-pinning the DG wire from the cluster pin #15 or from the ABS module DG pin #16. What does the cluster ABS light do then?

Replace the cluster lamp load on pin #15 with a test lamp. Use a known good ground. Does the test light come on during the initial key on? Does it come on after the motor has started? What we are trying to see if the test lamp mimics what the cluster is doing or not.

Does the Bluedriver ODB2 actually pull Ford specific ABS codes? Many ODB2 scanners do not pull the manufacturer's specific codes but instead pull generic ODB2 data. What is needed is something that is capable of monitoring PID's such as:

• each individual wheel speed sensor.
• brake pedal position switch

The idea here is to monitor the wheel speed sensors comparing each to see IF it's reasonable. Does the brake pedal switch respond correctly each time the brake pedal is pressed? IF the only ABS module data that you are looking at are the DTC codes then ODB2 scanner is not being used in an effective way. If the scanner isn't able to access the ABS internal operational PID's then it's not talking on the manufacturer's specific level.

My ABS & TC lights were on for about a year turns out I had a bad diode in my Alternator new Alternator no more ABS & TC lights. Test your Alternator.

How did the Ford dealer come to the conclusion that your cluster was bad? IS the problem fixed?