For a complete wiring diagram Refer to Section 8W.When Monitored:Ignition on.Set Condition:When the PCM does not receive a fuel level signal from the TIPM over the CAN C circuit. The circuit is constantly monitored. One Trip fault.Possible CausesCAN C BUS CIRCUIT OPEN OR SHORTEDTOTALLY INTEGRATED POWER MODULEPCMAlways perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) .1. ACTIVE DTCIgnition on, engine not running.With the scan tool, select View DTCs.Is the DTC Active at this time?YesGo To 2 NoRefer to the INTERMITTENT CONDITION Diagnostic Procedure.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)2. U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE (TIPM) ALSO ACTIVEWith the scan tool, select View DTCs.Is the U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE (TIPM) also set?YesFollow the diagnostics for U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE (TIPM)Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoReplace and program the Powertrain Control Module per Service Information.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)