MTU 12 V 4000 M93 x Operating Instructions Manual page 123

493 – AL ETC3 CutIn Failure
Cause
ETC3 could not be cut in.
500 – AL Wiring POM Starter 1
Cause
A wiring fault was detected in
the connection between starter
1 and POM. This may be a
missing consumer, a wire break,
or a short circuit.
501 – AL Wiring POM Starter 2
Cause
A wiring fault was detected in
the connection between starter
2 and POM. This may be a
missing consumer, a wire break,
or a short circuit.
502 – AL Open Load POM Alternator
Cause
Open load was detected at the
connection of the battery-
charging generator on the POM.
503 – AL Battery Not Charging
Cause
The battery-charging generator
does not charge the battery.
504 – AL CAN POM Node Lost
Cause
POM missing on CAN bus.
ZKP-Number: 18.004.203
Corrective action
u Check control valve on ETC 3.
ZKP-Number: 14.500.900
Corrective action
u Check connection between POM and starter.
ZKP-Number: 14.500.901
Corrective action
u Check connection between POM and starter.
ZKP-Number: 14.500.902
Corrective action
u Check connection between POM and starter.
ZKP-Number: 14.500.903
Corrective action
u Check battery-charging generator and cabling.
ZKP-Number: 14.500.904
Corrective action
u Check connection and POM. If alarm occurs in combination
with alarm 508, the resistor in the POM cabling is missing.
MS150047/04E 2013-07 | Troubleshooting | 123