Normal Operation and Fault Conditions

The ABS module monitors various inputs and compares the values to what should be expected. If the values received are out of range or not what should be expected, the ABS module sets a DTC. 

1. AM1: CHECK FOR DTC C0040:64, U3003:16 OR U3003:17 
   • Review the results from the ABS module self-test.
   • Is DTC C0040:64, U3003:16 or U3003:17 present? 

     Yes	No
     For DTC C0040:64, GO to PINPOINT TEST AC . For DTC U3003:16, GO to PINPOINT TEST A . For DTC U3003:17, GO to PINPOINT TEST F .	Go to  AM2.

2. AM2: RECHECK FOR THE ABS MODULE DTCS 
   • Ignition ON, engine OFF.
   • Clear the ABS DTCs.
   • Ignition ON, engine OFF.

     Carry out the ABS self-test.

   • Are any DTCs shown in the ABS DTC Fault Trigger Conditions table present? 
3. AM3: CALIBRATE THE ABS MODULE 
   NOTE: The vehicle must be on level ground and at a complete standstill during Interactive Vehicle Dynamics (IVD) Initialization. Any vehicle movement results in false values for this test.
   • Using a diagnostic scan tool, carry out the IVD Initialization routine. Follow the diagnostic scan tool directions.
   • Ignition OFF.
   • Ignition ON, engine OFF.
   • Clear the ABS DTCs.
   • Ignition OFF.
   • Ignition ON, engine OFF.

     Carry out the ABS self-test.

   • Is DTC C0044:54 present? 

     Yes	No
     Go to  AM6.	If DTC C1A08:1C or any other C0044:XX DTC is present, Go to  AM4. For all other ABS module DTCs, GO to the DTC Chart: ABS Module.

4. AM4: CHECK THE ABS MODULE-TO- HCU FASTENERS 
   • Ignition OFF.
   • Verify all ABS module-to- HCU fasteners are tightened to specifications. Refer to ABS Module Removal and Installation in the Anti-Lock Brake System (ABS) and Stability Control article.
   • Ignition ON, engine OFF.
   • Clear the ABS DTCs.
   • Ignition OFF.
   • Ignition ON, engine OFF.

     Carry out the ABS self-test.

   • Is DTC C0044:49, C0044:8F or C1A08:1C present? 
5. AM5: BLEED THE BRAKE SYSTEM AND RECHECK FOR DTC C0044:64 
   • Inspect the brake tubes and connections for damage and leaks. Repair or install new brake tubes as necessary.
   • Bleed the brake system. Refer to the Brake System General Information article.
   • Clear the ABS DTCs.
   • Ignition ON, engine OFF.

     Carry out the ABS self-test.

   • Is DTC C0044:64 still present? 
6. AM6: CHECK FOR CORRECT ABS OPERATION 
   • Ignition OFF.
7. AM7: CHECK FOR CORRECT ABS OPERATION 
   • Ignition OFF.
   • ABS_B Module connector disconnected.
   • ABS_A Module connector disconnected.
   • Inspect all disconnected electrical connectors for the following:
     • 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
     • spread terminals - install new terminals as necessary
   • ABS_B Module connector connected. Make sure the connector seats and latches correctly.
   • ABS_A Module connector connected. Make sure the connector seats and latches correctly.
   • Operate the system and determine if the concern is still present.
   • Is the concern still present? 

     Yes

     No

     INSTALL a new EBB assembly. The HCU and ABS module are a single unit known as the EBB assembly. CHECK OASIS for any service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new EBB assembly (HCU and ABS module). REFER to the Anti-Lock Brake System (ABS) and Stability Control article. ORDER a replacement EBB assembly and INCLUDE the RVC form. If this is a Ford paid repair, INCLUDE the RVC on the warranty claim form.

     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.