U1111

U1111-LOST ODOMETER MESSAGE

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

Theory of Operation

The Transmission Control Module (TCM) continuously monitors the Bus activity and receives the messages it needs.

When Monitored:
- Ignition ON with no CAN bus performance codes present, battery between 10 and 16 volts with the engine running.

Set Condition:
- PCM Odometer message is not received for more than 500 ms.
- Odometer message stays unchanged for 10.5 seconds.
- Odometer at key-on stays unchanged after the vehicle has been driven over 3 miles.

Refer to DTC Based Diagnostics and Non DTC Based Diagnostics for diagnostic procedures and other possible causes.