U1411

U1411-IMPLAUSIBLE FUEL VOLUME SIGNAL RECEIVED





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

When Monitored
Ignition on.

Set Condition
The fuel volume message that the PCM is receiving is implausible. The circuit is continuously monitored.

Possible Causes
- CAN B OPEN OR SHORTED
- CLUSTER MODULE FRONT CONTROL MODULE
- PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Theory of Operation
The Front Control Module receives a fuel volume signal over CAN B from the Cluster Module. Once the message is received from the FCM, it passages the fuel level message via CAN C to the PCM.

Diagnostic Test
1. ACTIVE DTC





NOTE: Diagnose all CAN B and C communication failures before continuing.

Ignition on, engine not running.
With a scan tool read 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. U0019-NO COMMUNICATION ON THE CAN B BUS CIRCUIT ALSO ACTIVE
With a scan tool check for DTCs in the FCM.

Is the U0019-NO COMMUNICATION ON THE CAN B BUS CIRCUIT active at this time?
Yes >> Refer to ELECTRONIC CONTROL MODULES for the U0019-NO COMMUNICATION ON THE CAN B BUS CIRCUIT diagnostic procedures.
Perform BODY VERIFICATION TEST VER - 1. Body Verification Test
No >> Replace and program the Powertrain Control Module per Service Information.
Perform (NGC) POWERTRAIN VERIFICATION TEST VER - 5. Powertrain Verification Test - Ver 5