4.2.198. SPN 520209, FMI 31, Error in the plausibility of the injection energizing timeΒΆ

Description

EEM4 monitoring system has detected implausible injection energizing time for pilot, main or post -injections.

Possible causes are:

  • The injector solenoid valve wiring is defective.
  • The engine speed signal is implausible.
  • The control unit 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 campseed sensor wiring, the connectors and the contact surfaces of the connector pins (possible oxidation).
  • Check the cranshaft speed sensor wiring, the connectors and the contact surfaces of the connector pins (possible oxidation).
  • Check the camshaft sensor mounting. The air gap between the sensor tip and the trigger wheel teeth should be 0,2 - 1,0 mm.
  • Check the condition of the trigger wheels. A damaged tooth may generate an abnormal pulse shape.
  • Check that the ECU software version is the latest available.
  • Check the injector solenoid valve wiring, the connectors and the contact surfaces of the connector pins (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