Operating instructions

6 Troubleshooting
6.1 Troubleshooting
Engine does not turn when starter is actuated
Component Cause Measure
Battery Discharged or faulty Charge or replace (see manufacturer's
documentation).
Cable connections faulty Check if cable connections are proper‐
ly secured (see manufacturer's docu‐
mentation).
Starter Engine cabling or starter faulty Check if cable connections are proper‐
ly secured, contact Service.
Engine wiring Faulty Check (→ Page 185).
LOP Seating of assemblies or plug connec‐
tors possibly loose
Perform visual inspection
(→ Page 193).
ECU Seating of plug connections possibly
loose
Check plug connections (→ Page 189).
Engine Running gear blocked (engine cannot
be barred manually)
Contact Service.
Engine turns but does not fire
Component Cause Measure
Starter Poor rotation by starter: Battery dis‐
charged or faulty
Charge or replace battery (see manu‐
facturer's documentation).
Engine wiring Faulty Check (→ Page 185).
Fuel system Air in fuel system Vent fuel system (→ Page 135).
ECU Faulty Contact Service.
Engine fires unevenly
Component Cause Measure
Fuel injection equip‐
ment
Injector faulty Replace (→ Page 129).
Engine wiring Faulty Check (→ Page 185).
Fuel system Air in fuel system Vent fuel system (→ Page 135).
ECU Faulty Contact Service.
Engine does not reach rated speed
Component Cause Measure
Fuel supply Fuel prefilter clogged Replace (→ Page 143).
Easy-change fuel filter clogged Replace (→ Page 137).
Air supply Air filter clogged Check signal ring position of contami‐
nation indicator (→ Page 152).
108 | Troubleshooting | M015412/03E 2012-02
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