3.2.70. SPN 1485, FMI 11, ECU internal fault 0100ΒΆ

Description

The EEM4 system internal main relay is stuck. A possible reason for this is an ECU hardware defect.

  • The ECU connector is defective

Reaction in EEM

The FC is stored and the warning lamp is activated. The CAN message indicates active fault.

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:

  • Check the ECU connector, wiring and contact surfaces (possible oxidation).
  • Check the ECU operation with another EEM4 controller. If the system is functional and the fault is not active with the replacement ECU, then the original ECU is defective.