3.2.496. SPN 898, FMI 8, Speed Control (TSC1) timeoutΒΆ

Description

The EEM4 monitoring system does not receive a speed demand within the required time.

Possible causes are:

  • The sending device which transmits the TSC1 is defective.
  • The CAN bus is defective.

Reaction in EEM

The FC is stored and the warning lamp is activated. The CAN message indicates active fault. The engine control unit will use a secondary speed source, if available, or the engine will be forced into low idle.

Solution

First save the error log and then erase it. Restart the ECU after erasing the error log. If the fault occurs again during the next driving cycle, check the following paths:

  • Contact the vehicle manufacturer.
  • Check the CAN bus operation.