MTU 12V4000G34F Operating Instructions Manual page 111

1376 – AL Refdrive Impossibl Ubat Low
Cause
The ECU supply voltage is too low
for successful homing of all flaps
even when the engine is running.
1377 – AL Refdrive Impossibl Eng Op Point
Cause
Homing of one or more flaps
before engine start was not
completed successfully. Homing
the affected flaps is no longer
possible.
Corrective action
1. Check state of charge of batteries (plant side).
2. Check plug connections to Engine Control Unit (→ Page 226).
3. Contact Service.
Corrective action
1. Run engine up to idling speed. Result: Homing is executed.
2. Contact Service.
MS15060/01E 2018-12 | Troubleshooting | 111