MTU 12V4000M*3 series, Operating Instructions Manual

Page: 117 / 283

7 Troubleshooting
7.1 Troubleshooting
Engine does not turn when starter is actuated
Cause Corrective action
Battery low or faulty u Charge or replace (see separate documentation).
Battery: Cable connections faulty
u
Check firm seating of cable connections (see separate
documentation).
Engine cabling or starter faulty
u
Check firm seating of cable connections, contact Service.
Engine cabling faulty
u
Check (→ Page 257).
Loose plug connections on Engine
Control Unit
u
Check plug connections (→ Page 259).
Loose plug connections on Engine
Interface Module (EIM)
u
Check plug connections (→ Page 261).
Fuse F1 (→ Page 249)in engine
wiring harness faulty (fuse lamp
on EIM flashes with relevant
flashing code)
u
Check fuse (replace as necessary) and re-start the system by
actuating the key switch.
Engine blocked (engine cannot be
barred manually)
u
Contact Service.
Engine turns on starting but does not fire
Cause Corrective action
Poor rotation by starter: Battery
low or faulty u Charge or replace battery (see separate documentation).
Engine cabling faulty u Check (→ Page 257).
Engine Control Unit faulty u Contact Service.
Engine fires unevenly
Cause Corrective action
Injector faulty
u
Replace (→ Page 174).
Engine cabling faulty
u
Check (→ Page 257).
Engine Control Unit faulty
u
Contact Service.
Engine does not reach nominal speed
Cause Corrective action
Fuel filter clogged u Replace (→ Page 187).
Air supply: Air filter clogged u Check signal ring position of service indicator (→ Page 209).
Fuel injection: Injector faulty u Replace (→ Page 174).
Engine cabling faulty u Check (→ Page 257).
Engine: Overload u Contact Service.
MS15035/00E 2018-08 | Troubleshooting | 115
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