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7.2 Troubleshooting
Engine does not turn when starter is actuated
Cause
Battery low or defective
Cable connections defective
Starter (electric): Engine cabling
or starter faulty
Starter (compressed air): Cabling
on starting valve or starter
defective
Engine wiring faulty
Engine / generator control:
Assemblies or plug-in connections
loose
Engine governor: Plug-in
connections loose
Running gear blocked (engine can
not be barred manually)
Engine turns on starting, but does not fire
Cause
Poor rotation by (electric) starter:
Battery low or defective
Poor rotation by (air) starter:
Pressure too low
Engine wiring faulty
Air in fuel system
Engine Control Unit faulty
Engine fires unevenly
Cause
Injector faulty
Engine wiring faulty
Air in fuel system
Engine Control Unit faulty
184 | Troubleshooting | MS15065/01E 2019-01
Corrective action
u Charge or replace (→ manufacturer's documentation).
u Check cable connections for secure seating (→ manufacturer's
documentation).
u Check that cable connections are properly secured.
Contact Service.
u Check that cable connections are properly secured.
Contact Service.
u Check (→ Page 321).
u Carry out visual inspection (→ manufacturer's documentation).
u Check plug-in connections (→ Page 323).
u Contact Service.
Corrective action
u Charge or replace battery (→ manufacturer's documentation).
u Check compressed air system.
u Check (→ Page 321).
u Vent fuel system (→ Page 225).
u Contact Service.
Corrective action
u Check, replace as necessary (→ Page 212).
u Check (→ Page 321).
u Vent fuel system (→ Page 225).
u Contact Service.
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