3.2.47. SPN 1136, FMI 4, ECU temperature sensor voltage below normal

Description

The EEM4 monitoring system has detected a failure at the ECU internal temperature sensor. A possible reason for this is an ECU hardware defect.

Reaction in EEM

The FC is stored and the warning lamp is activated. The CAN message indicates active fault. The engine functions that depend on the ECU temperature are not active.

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 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.