Possible Causes

Network concern 

BCM configuration concern 

ABS Module 

1. PA1: CHECK THE ABS MODULE AND BCM DTCS 
   • Ignition ON, engine OFF.
   • Carry out the ABS self-test.
   • Carry out the BCM self-test.
   • Are any communication or module internal failure DTCs present? 

     Yes	No
     For the ABS module, REFER to the ABS Module DTC Chart. For the BCM, REFER to Multifunction Electronic Modules .	Go to  PA2.

2. PA2: RECHECK FOR ABS MODULE DTC U0300:00 
   • Clear the ABS DTCs.
   • Ignition OFF.
   • Ignition ON, engine OFF.
   • Carry out the ABS self-test.
   • Is DTC U0300:00 still present? 

     Yes	No
     Go to  PA3.	The concern was caused by the installation of a new BCM. The repair is complete.

3. PA3: PROGRAM THE ABS MODULE 
   • Using a diagnostic scan tool, carry out the PMI for the BCM using as-built data.
   • Ignition OFF.
   • Ignition ON, engine OFF.
   • Carry out the ABS self-test.
   • Is DTC U0300:00 still present? 

     Yes	No
     Go to  PA4.	The concern was caused by a incomplete or improperly programmed BCM, the repair is complete.

4. PA4: PROGRAM THE BCM 
   • Using a diagnostic scan tool, carry out the PMI for the BCM using as-built data.
   • Ignition OFF.
   • Ignition ON, engine OFF.
   • Carry out the ABS self-test.
   • Is DTC U0300:00 still present? 

     Yes	No
     Go to  PA5.	The concern was caused by a incomplete or improperly programmed BCM, the repair is complete.

5. PA5: CHECK FOR CORRECT ABS MODULE OPERATION 
   • Ignition OFF.
     NOTE: The battery must be removed to access the ABS module electrical connector.
   • Remove the battery. Refer to the appropriate procedure in Charging System (Battery, Mounting And Cables) .
   • Disconnect and inspect the ABS module connector (if not previously disconnected).
   • Repair:
     • -corrosion (install new connector or terminal - clean module pins)
     • -damaged or bent pins - install new terminals or pins
     • -pushed-out pins - install new pins as necessary
   • Reconnect the ABS module connector. Make sure it seats and latches correctly.
   • Install the battery. Refer to the appropriate procedure in Charging System (Battery, Mounting And Cables) .
   • Operate the system and determine if the concern is still present.
   • Is the concern still present? 

     Yes	No
     CHECK OASIS for any applicable Technical Service Bulletins TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSBs address this concern, INSTALL a new ABS module. Refer to Anti-Lock Brake System (ABS) And Stability Control .	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.