U0114

U0114-LOST COMMUNICATION WITH FINAL DRIVE CONTROL MODULE

U0114-Lost Communication With Final Drive Control Module:

WHEN MONITORED
- With the ignition on
- Battery voltage between 10 and 16 volts
- IOD fuse installed
- TIPM is configured correctly

SET CONDITION
Bus messages not received from the Final Drive Control Module (FDCM) for approximately 2 to 5 seconds.

POSSIBLE CAUSES
- CAN B or CAN C BUS circuits open or shorted
- DTCS related to battery voltage, ignition, or VIN messages
- TIPM not configured correctly
- Final drive control module power and ground
- Final drive control module
- Module that set this DTC

DIAGNOSTIC TEST

1. VERIFY DTC IS ACTIVE

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

With the scan tool, read active DTCs.

Q: Is this DTC active?

YES: Go To 2
NO: Refer to the Stored Lost Communication test procedure. Stored Lost Communication DTCs

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

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

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

YES: Diagnose and repair the DTC.
NO: Go To 3

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

Q: Is the FDCM active on the bus?

YES: Go To 4
NO: Refer to Manufacturer Code Charts / Communications for the No Response test procedure. Communications - Verbose Codes

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

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

YES: Replace/update the Final Drive Control Module
Perform the appropriate VERIFICATION TEST.
NO: Replace/update the module that set this DTC.
Perform the appropriate VERIFICATION TEST.