MTU 20V4000L33F Operating Instructions Manual page 77

1.4520.241 – Individual Timing out of Range
Yellow alarm. Initiated by IC922.
Cause
Specified individual ignition
timing is beyond the valid range.
1.4520.242 – Selftest Shutdown
Yellow alarm. Initiated by IC922.
Cause
Self-test is active with the
engine rotating.
1.4520.243 – Open Primary Rate Exceeded
Red alarm. Initiated by IC922.
Cause
Admissible summation of
discharge faults is reached.
1.4520.245 – Open Primary, Channel 1
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.246 – Open Primary, Channel 2
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.247 – Open Primary, Channel 3
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.248 – Open Primary, Channel 4
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
Corrective action
u Adjust value.
Corrective action
u Restart ignition.
Corrective action
1. Check associated cabling.
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.
MS150108/02E 2015-03 | Troubleshooting | 77