CAN-timeout on message Engine Temperature
â–¶ How to fix
Check the wiring and connectors on TMS (E5) and EMS (E44). Check if EMS (E44) has any DTCs and troubleshoot those. If any software upgrade is available for the EMS (E44) or the TMS (E5), proceed with the upgrade. If none of the above helps replace EMS (E44) and ultimately replace TMS (E5).
What you'll see
Retarder may feel powerless.
System reaction
Torque limit retarder to 1000 Nm
Diagnostic depth
Detection
The CAN-message has not been received for a specified amount of time.
Possible cause
The harness or connectors have an open circuit or the message has not been transmitted by the EMS.