502 – AL Open Load POM Battery-charging Generator
ZKP-Number: 1.4500.902
Power disruption, battery-charging generator connection of POM
Yellow alarm; warning
Cause
Corrective action
Wiring faulty or no resistance
over switch.
u
Check connection between POM and battery-charging
generator.
503 – AL Battery Not Charging
ZKP-Number: 1.4500.903
No battery charge
Yellow alarm; warning
Cause
Corrective action
Battery is not charged by
battery-charging generator.
u
Check battery-charging generator and wiring (→ Page 248).
504 – AL CAN POM Node Failure
ZKP-Number: 1.4500.904
POM missing on CAN bus
Yellow alarm; warning
Cause
Corrective action
If alarm 508 occurs in addition,
the resistor in the POM wiring is
missing.
u
Check connection and POM.
506 – AL Low Starter Voltage
ZKP-Number: 1.4500.906
The battery voltage is too low for the starting process
Yellow alarm; warning
Cause
Corrective action
Wiring faulty or battery is flat.
u
Check starter battery and wiring (→ Page 248).
507 – AL POM Fault
ZKP-Number: 1.4500.907
A general POM fault occurred.
Yellow alarm; warning
Cause
Corrective action
Fault in POM.
u
Replace POM.
MS150110/00E 2013-10 | Troubleshooting | 159
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