MTU 20V4000Lx2x Operating Instructions Manual page 80

1.4520.240 – Unknown Timing or Energy Level
Red alarm. Initiated by IC922.
Cause
No global ignition timing and
power level received, CAN bus
connection is faulty.
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.
80 | Troubleshooting | MS150122/00E 2015-07
Corrective action
u Check cabling and setting.
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.