Antilock Brake Module (ABS)

U0114-LOST COMMUNICATION WITH FINAL DRIVE MODULE

For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:

- With the ignition on.
- Battery voltage between 10 and 16 volts.
- Ignition Off Draw (IOD) fuse installed.
- Front Control Module (FCM) is configured correctly.
- Set Condition:
Bus messages not received from the Front Control Module (FCM) for approximately two to five seconds.





1. VERIFY DTC IS ACTIVE

NOTE: Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.

1. With the scan tool, read active DTCs.

Is this DTC active?

Yes

- Go To 2

No

- Stored Lost Communication DTCs Perform the Stored Lost Communication DTCs diagnostic procedure.

2. CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS
1. With the scan tool, read all active DTCs from all modules.

NOTE: Check for FCM configuration, CAN B or C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.

Does the scan tool display any active DTCs to the conditions listed above?

Yes

- Go To and perform the appropriate diagnostic procedure.

No

- Go To 3

3. VERIFY THAT THE FDCM IS ACTIVE ON THE BUS
1. Turn the ignition on.
2. With the scan tool, select Network Diagnostics.
3. Verify that the FDCM is active on the bus.

Is the FDCM active on the bus?

Yes

- Go To 4

No

- Manufacturer Code Charts Perform the Loss of Communication with FDCM diagnostic procedure

4. CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
1. With the scan tool, select Network Diagnostics.

Is there more than one module with active DTCs "Logged Against" the FDCM?

Yes

- Replace/update the Final Drive Control Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Anti-Lock Brake Module
- Perform ABS VERIFICATION TEST ABS Verification Test.