MTU 20 V 4000 G23 Operating Instructions Manual page 97

489 – SS ETC3 Overspeed
Limit value 2
Cause
Speed of second secondary
turbocharger too high.
490 – HI ETC4 Overspeed
Limit value 1
Cause
Speed of third secondary
turbocharger too high.
491 – SS ETC4 Overspeed
Limit value 2
Cause
Speed of third secondary
turbocharger too high.
492 – AL ETC4 CutIn Failure
Cause
ETC 4 failed to cut in.
493 – AL ETC3 CutIn Failure
Cause
ETC 3 failed to cut in.
500 – AL Wiring POM Starter 1
Cause
A wiring fault was detected in the
connection of starter 1 of the
CPM. The root cause might be a
missing consumer, a wire break
or a short circuit.
ZKP-Number: 23.014.932
Corrective action
u Reduce power.
ZKP-Number: 23.015.931
Corrective action
u Reduce power.
ZKP-Number: 23.015.932
Corrective action
u Reduce power.
ZKP-Number: 18.004.202
Corrective action
u Check control valve on turbocharger 4.
ZKP-Number: 18.004.203
Corrective action
u Check control valve on turbocharger 3.
ZKP-Number: 14.500.900
Corrective action
u Check connection between POM and starter.
MS150093/01E 2012-06 | Troubleshooting | 97