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» Northern California Ford Owners     » Automotive   » Tech Talk   » 2004 Mustang GT ABS light on

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Author Topic: 2004 Mustang GT ABS light on
Built4Speed
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Changed the rear speed sensors so far and still on. My OBD2 scanner doesn't see any Abs codes. Anyone know if there is a way to test if the module is bad?

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Built 4 Speed...Built 4 Cheap

Posts: 238 | From: Sacramento | Registered: Dec 2014  |  :
JohnB
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Have you checked/changed the main fuse?

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1965 Shelby Cobra
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Posts: 6525 | From: Orlando FL/Redding CA | Registered: Mar 2002  |  :
Built4Speed
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All the fuses look good. I have power at pin 8 on the harness side connector. I'm guessing bad abs module?

[ 2025-01-01, 07:46 PM: Message edited by: Built4Speed ]

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Built 4 Speed...Built 4 Cheap

Posts: 238 | From: Sacramento | Registered: Dec 2014  |  :
throttlepositionsensor
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Page 30 lists three different fuses for ABS https://www.forelpublishing.com/demo/Demo13990.pdf
Can you find the 99-04 factory service manual? Factory service manuals have tests for all the modules.

Posts: 131 | Registered: Dec 2022  |  :
Built4Speed
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Here's what I've found in the shop manual. Going to send the module in for repair on eBay and see if that fixes my problem.

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Built 4 Speed...Built 4 Cheap

Posts: 238 | From: Sacramento | Registered: Dec 2014  |  :
throttlepositionsensor
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Did your module pass the voltage and resistance tests? Look for a replacement module at https://car-part.com It is a database of car parts from most wrecking yards in the nation.

[ 2025-01-04, 04:43 PM: Message edited by: throttlepositionsensor ]

Posts: 131 | Registered: Dec 2022  |  :
Built4Speed
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Just got the module back after sending it away for repair and it is working. No abs light. Traction control works. I haven't dyno'd it yet but I'm pretty sure 15HP gain easily.

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Built 4 Speed...Built 4 Cheap

Posts: 238 | From: Sacramento | Registered: Dec 2014  |  :


 
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