MTU 20V4000L33F Operating Instructions Manual page 78

1.4520.249 – Open Primary, Channel 5
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.250 – Open Primary, Channel 6
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.251 – Open Primary, Channel 7
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.252 – Open Primary, Channel 8
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.253 – Open Primary, Channel 9
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.254 – Open Primary, Channel 10
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.255 – Open Primary, Channel 11
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
78 | Troubleshooting | MS150108/02E 2015-03
Corrective action
1. Check cabling to ignition coil.
2. Check ignition coils.
Corrective action
1. Check cabling to ignition coil.
2. Check ignition coils.
Corrective action
1. Check cabling to ignition coil.
2. Check ignition coils.
Corrective action
1. Check cabling to ignition coil.
2. Check ignition coils.
Corrective action
1. Check cabling to ignition coil.
2. Check ignition coils.
Corrective action
1. Check cabling to ignition coil.
2. Check ignition coils.
Corrective action
1. Check cabling to ignition coil.
2. Check ignition coils.