U110C

U110C-NO FUEL LEVEL BUS MESSAGE RECEIVED





For the Engine circuit diagram, Refer to SCHEMATICS AND DIAGRAMS.

When Monitored
Ignition on.

Set Condition
When the PCM does not receive a fuel level signal from the FCM over the CAN C circuit. The circuit is constantly monitored.

Possible Causes
- CAN C BUS CIRCUIT OPEN OR SHORTED
- FRONT CONTROL MODULE
- PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Theory of Operation
The fuel level signal is a direct input to the Cluster. The fuel level signal is sent to the FCM over the CAN B bus circuit. The NGC receives the fuel level signal from the FCM over the CAN C bus circuit.

Diagnostic Test
1. ACTIVE DTC





Ignition on, engine not running.
With the scan tool read Powertrain DTCs.

Is the DTC active at this time?
Yes >> Go To 2
No >> Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform (NGC) POWERTRAIN VERIFICATION TEST VER - 5. Powertrain Verification Test - Ver 5
2. U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE ALSO ACTIVE
With the scan tool read DTCs.

Is the U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE also set?
Yes >> Follow the diagnostics for U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE
Perform (NGC) POWERTRAIN VERIFICATION TEST VER - 5. Powertrain Verification Test - Ver 5
No >> Replace and program the Powertrain Control Module per Service Information.
Perform (NGC) POWERTRAIN VERIFICATION TEST VER - 5