Fault setting condition(s)

• The power supply to the DME (DFI) control unit was interrupted during control unit run-on.

  or

• No or implausible time pulse from the gateway control unit within 60 seconds, with:
  • Ignition on

INFORMATION 

1. After the ignition is switched off (terminal 15), the DME control unit switches to control unit run-on mode.

   The run-on duration of the engine compartment purge fan AFTER ignition off depends on the engine compartment temperature.

   • It is as follows for the following engine compartment temperatures:
     • < 45 °C (113 °F) for approx. 50 seconds
     • 45... 70 °C (113... 158 °F) for approx. 200 seconds
     • > 70 °C (158 °F) for up to 20 minutes
2. The DME control unit receives time information from the instrument cluster at regular intervals (approx. 4 sec.) when the ignition is on.
3. The switch-off time A145_Time since engine stop (manual via ignition lock)  comes from the instrument cluster. The gateway routes this to the DME control unit.