U110C

U110C-LOST FUEL LEVEL MESSAGE

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

Theory of Operation

The Powertrain Control Module (PCM) receives the fuel level signal over the CAN C bus from the Body Control Module.

- When Monitored:
With the ignition on, the battery voltage between 9 and 16 volts and engine run time greater than three seconds.

- Set Condition:
The Powertrain Control Module (PCM) either doesn't receive a bus message or receives an implausible bus message from the Body Control Module (BCM).





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

1. ACTIVE DTC

NOTE: For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

1. Ignition on, engine not running.
2. With a scan tool, select View PCM DTCs.

Is the status Active for this DTC?

Yes

- Go To 2

No

- Perform the INTERMITTENT CONDITION diagnostic procedure. Intermittent Condition Test

2. U1040-LOST COMMUNICATION WITH BODY CONTROL MODULE (BCM) ALSO ACTIVE
1. With the scan tool, select View DTCs.

Is the U1040-LOST COMMUNICATION WITH BODY CONTROL MODULE (BCM) also set?

Yes

- Perform the U1040-00-Lost Communication with Body Control Module (BCM) diagnostic procedure. U1040

No

- Replace and program the Powertrain Control Module (PCM). PCM/ECM Reprogramming
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.