Hi everyone,
I am looking for some technical guidance to complete an ABS module replacement on a 2010 Mazda 3 (BL), 1.6 MZR engine.
Vehicle History and Previous Diagnosis:
The car originally had a faulty ABS unit with typical internal electronic failures (DTCs C0082 and U3000:49 - Internal Control Module Memory Corruption). Additionally, it had a permanent fault for the Rear Right Wheel Speed Sensor. Due to these persistent errors, the unit was replaced with a used compatible module (Reference ending in -AE).
Current Behavior with the Replacement Module:
Confirmed Improvement: The Rear Right Wheel Speed Sensor fault has completely disappeared, confirming that the car's wiring and the new module's sensor readings are correct.
The ABS and ESP warning lights turn off upon startup. However, after driving a short distance (approx. 500 meters / 0.3 miles), both lights turn back on and remain steady.
The VIN stored in the donor module does not match the vehicle's VIN
Current DTC in ABS: C0020:1C
Configuration Issue: Every time I attempt the "VIN Learn" service procedure, it fails with the message: "Service procedure has failed".
Furthermore, in the "Configuration and Programming" section (Chip icon), the "Module Configuration" or "As Built" options for the ABS are missing. I can only see "Module Reboot" under the Service Functions (Wrench icon).
Questions:
Is it possible that the presence of the C0020:1C error (triggered by the dynamic pump test while driving) is blocking access to the VIN configuration functions in FORScan?
Is there any way to force the "As Built" menu to appear for this specific module or to perform the VIN Learn manually when this voltage/motor conflict is reported?
I have an active Extended License and I've already tried deleting the vehicle profile to force a new scan, but the menus remain missing.
Any technical insight would be greatly appreciated. Thanks!
Issues with ABS Module VIN Learn - Mazda 3 (BL) 2010 - From Electronic Failure to C0020
Re: Issues with ABS Module VIN Learn - Mazda 3 (BL) 2010 - From Electronic Failure to C0020
I am attaching an official Mazda Service Bulletin (TSB 04-002/13) that describes exactly my symptoms: ABS light on with DTCs C0020:1C and U0415:92.
According to this document, this is a known manufacturing defect related to the pump motor brushes in units produced before February 2011. Does this mean the eBay replacement I just bought is also defective from the factory?
Even if the hardware is failing the dynamic test after 500 meters, I still don't understand why FORScan is not allowing me to perform the VIN Learn or why the 'Module Configuration' menu is missing entirely. Could the internal hardware fault be 'locking' the module's programming interface?
Any ideas on how to bypass this or force the VIN write despite the C0020 error? I'm stuck and any advice would be appreciated.
https://static.nhtsa.gov/odi/tsbs/2013/ ... 6-2532.pdf
According to this document, this is a known manufacturing defect related to the pump motor brushes in units produced before February 2011. Does this mean the eBay replacement I just bought is also defective from the factory?
Even if the hardware is failing the dynamic test after 500 meters, I still don't understand why FORScan is not allowing me to perform the VIN Learn or why the 'Module Configuration' menu is missing entirely. Could the internal hardware fault be 'locking' the module's programming interface?
Any ideas on how to bypass this or force the VIN write despite the C0020 error? I'm stuck and any advice would be appreciated.
https://static.nhtsa.gov/odi/tsbs/2013/ ... 6-2532.pdf