7 Troubleshooting
7.1 Troubleshooting
Engine does not turn when starter is actuated
Cause
Corrective action
Battery flat or defective.
u
Charge or replace battery (see manufacturer's documentation).
Cable connections on battery are
defective.
u
Check if cable connections are properly secured (see
manufacturer's documentation).
Engine wiring or starter defective.
u
Check if cable connections are properly secured, contact Service.
Engine wiring faulty.
u
Check (→ Page 143).
Assemblies are not correctly
connected in control panel LOP.
Plug-in connections at LOP
control panel are loose.
u
Perform visual inspection (→ Page 151).
Plug connection are loose at
engine control unit ECU.
u
Check plug connections (→ Page 147).
Engine blocked (cannot be rotated
by hand).
u
Contact Service.
Start interlock limit switch is not
installed.
u
Check limit switch (→ Page 146).
Start interlock limit switch is
defective.
u
Check limit switch (→ Page 146).
Wiring of start interlock limit
switch is faulty.
u
Check wiring (→ Page 143).
Engine turns but does not fire
Cause
Corrective action
Poor rotation by starter: Battery
flat or defective.
u
Charge or replace battery (see manufacturer's documentation).
Engine wiring faulty.
u
Check (→ Page 143).
Air in fuel system.
u
Vent fuel system (→ Page 88).
Engine control unit ECU is
defective.
u
Contact Service.
Engine fires unevenly
Cause
Corrective action
Injector faulty.
u
Replace (→ Page 81).
Injection pump faulty.
u
Replace (→ Page 78).
Engine wiring faulty.
u
Check (→ Page 143).
Air in fuel system.
u
Vent fuel system (→ Page 88).
Engine control unit ECU is
defective.
u
Contact Service.
52 | Troubleshooting | MW15409/04E 2015-08
TIM-ID: 0000042073 - 001
Summary of Contents for 12V2000M91
Page 1: ...Operating Instructions Diesel Engine 12V2000M91 16V2000M91 MW15409 04E...
Page 23: ...MW15409 04E 2015 08 General Information 23 TIM ID 0000002178 006...
Page 24: ...Lube oil system covers 24 General Information MW15409 04E 2015 08 TIM ID 0000002178 006...
Page 25: ...MW15409 04E 2015 08 General Information 25 TIM ID 0000002178 006...
