Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Possible Causes
2021 Ford Edge SE, 4WDSECTION Possible Causes
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
- PCM configuration
- ABS module configuration
- AF1: VERIFY THE ABS MODULE DTC
- Ignition ON, engine OFF.
- Clear the ABS DTCs.
Carry out the ABS self-test.
- Is DTC U3002 still present in the ABS module?
Yes No Go to AF2. The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition. - AF2: VERIFY THE NETWORK COMMUNICATION
- Ignition ON, engine OFF.
- Using a diagnostic scan tool, carry out the Network Test.
- Recored all No Communication and Invalid Data DTCs.
- Do all equipped modules communicate with the diagnostic scan tool?
Yes No Go to AF3. DIAGNOSE the module does not respond to the diagnostic scan tool. REFER to the Module Communications Network article. - AF3: CHECK FOR COMMUNICATION DTCS
- Using the recorded results from the Network Test, determine if there are any No Communication With
The PCM or any Invalid Data Received From The PCM DTCs present in the ABS module.
- Are there any No Communication or any Invalid Data DTCs present in the ABS module?
Yes No REFER to the ABS Module DTC Chart. DIAGNOSE all No Communication and Invalid Data DTCs in the ABS module before diagnosing this DTC. Go to AF4. - Using the recorded results from the Network Test, determine if there are any No Communication With
- AF4: CONFIGURE THE ABS MODULE USING PMI
- Ignition ON, engine OFF.
- Using a diagnostic scan tool, configure the ABS module using PMI. Follow all diagnostic scan tool directions.
- Ignition OFF.
- Ignition ON, engine OFF.
- Clear the ABS DTCs.
Carry out the ABS self-test.
- Is DTC U3002 still present in the ABS module?
Yes No Using a diagnostic scan tool, PROGRAM the PCM using PMI. FOLLOW all scan tool directions. REFER to the Module Configuration article. The system is operating correctly. The concern was caused by an incomplete or improper programming session. - AF5: CONFIGURE THE ABS MODULE USING AS-BUILT DATA
- Ignition ON, engine OFF.
- Using a diagnostic scan tool, configure the ABS module using As-Built data. Follow all diagnostic scan tool directions.
- Ignition OFF.
- Ignition ON, engine OFF.
- Clear the ABS DTCs.
Carry out the ABS self-test.
- Is DTC U3002 still present in the ABS module?
Yes No Using a diagnostic scan tool, PROGRAM the PCM using PMI. FOLLOW all scan tool directions. REFER to the Module Configuration article. The system is operating correctly. The concern was caused by an incomplete or improper programming session.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.