U0141

U0141-LOST COMMUNICATION WITH IPM (FCM/TIPM)

For a complete wiring diagram Refer to the Wiring Information.

Theory of Operation

The purpose of the diagnostic is to monitor the transmitted messages on the CAN BUS and the validity of the CAN signals. Several control units are connected to the CAN BUS which send their messages cyclically in a defined time window. The messages contain multiple signals representing vehicle information.

- When Monitored:
Continuously when the ignition is on.

The battery voltage between 10.0 and 16.0 Volts.

Body Control Module (BCM) is configured correctly.

- Set Condition:
Bus messages not received from the Body Control Module (BCM) for approximately two to five seconds.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. 8HP45 Pre-Diagnostic Troubleshooting Procedure

VERIFY DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, read active DTCs.

Is this DTC active?

Yes

- Testing and Inspection Perform the U0141-Lost Communication with IPM diagnostic procedure.

No

- Perform the Stored Lost Communication DTCs diagnostic procedure. Stored Lost Communication DTCs