Trouble Shooting; Engine Starting Trouble - LIMBACH L 2400 EF Operating And Maintenance Manual

Trouble Shooting

12
"Small", apparently negligible causes are often responsible for a "big" effect, i.e. disturbance
of engine operation. Detection of the causes is not always easy. The hints to possible trouble
causes and their correction contained in this section serve as a guideline for the engine user,
listing the most frequent faults. This list of causes, however, does not claim for completeness.
Repair work must be done only by persons authorized to perform the specific task.

12.1 Engine Starting Trouble

Possible Cause:
Battery discharged or defective.
Battery wiring not connected to starter motor
or defective or possibly insufficient contact.
Ground wire to engine not connected, defec-
tive, possibly insufficient contact.
Starter motor defective.
Starter relay defective.
Engine electrics not swiched on.
Ignition harness disengaged, mixed up or
damaged.
Fuse blown in relay box (MCU).
Wiring harness or connector loose or defec-
tive, wire broken in wiring harness.
Throttle potentiometer defective.
RPM sensor defective or not
ECU defective.
Edition: 20.06.2018
Operating Manual
L 2400 EF/DF/ET/DT/DX/DS
Remedy:
Charge or replace battery.
Clean connectors. Connect or replace wire.
Clean connectors. Connect or replace
ground wire.
Repair or replace starter motor.
Replace starter relay.
Turn on engine electrics.
Fasten ignition lead(s) or replace. Observe
firing sequence 1-3-2-4. Check markings of
connectors.
Check fuse, replace if necessary
Check wiring harness and connectors,
repair if necessary.
Check throttle potentiometer. Replace if
necessary. Try to run engine in emergency
mode.
connected. Check rpm sensor. Replace if necessary.
Try to run engine in emergency mode.
Replace ECU.
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