Diagnostic Trouble Code (DTC) Information

ECM-U010400 Failed Communication With Cruise Control Module

Condition
The engine control module (ECM) checks the CAN communication to the steering wheel module (SWM).

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) receives an incorrect check sum or if the update bit from the steering wheel module (SWM) is missing.

The diagnostic trouble code can be diagnosed when the engine is running.

Substitute Value
- Cruise control turned off when the fault is active.

Possible Source
- Open-circuit in the control area network (CAN) wiring.
- Short-circuit between the control area network (CAN) wiring.
- Internal fault in the engine control module (ECM).
- Internal fault in another control module in the same part of the control area network (CAN).

Fault Symptom[s]
- Cruise control does not function at all.