MTU 12 V 4000 M23F Operating Instructions Manual page 154

508 – AL Incorrect POM ID
POM sends a different ID number than expected
Yellow alarm; warning
Cause
If alarm 504 occurs in addition,
the resistor in the POM wiring is
missing.
510 – AL Override applied
Override was activated
Yellow alarm; warning
Cause
Override suppresses other
alarms.
515 – AL Starter Not Engaged
Yellow alarm - possible start cancelation
Cause
Starter on POM could not be
engaged.
519 – Oil Level Calibration Error
Error writing calibration value into flash or SD of level sensor.
Yellow alarm; warning
Cause
Oil level sensor or wiring faulty.
531 – AL Wiring PWM_CM1
Red alarm
Cause
Wire break or short circuit on
channel PWM_CM1.
154 | Troubleshooting | MS150068/01E 2014-01
ZKP-Number: 1.4500.908
Corrective action
u Check POM wiring harness.
ZKP-Number: 2.7002.010
Corrective action
u Deactivate Override pushbutton again.
ZKP-Number: 2.1090.926
Corrective action
1. Repeat start.
2. Check POM, starter and wiring (→ Page 265).
3. Contact Service.
ZKP-Number: 1.0158.921
Corrective action
1. Check sensor and wiring, replace as necessary (→ Page 265).
2. Contact Service.
ZKP-Number: 1.1044.900
Corrective action
u Check wiring to TecJet throttle, replace TecJet throttle if
necessary.