MTU 12V4000L32F Operating Instructions Manual page 87

1.4520.260 – Open Primary, Channel 16
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.262 – Open Primary, Channel 17
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.263 – Open Primary, Channel 18
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.264 – Open Primary, Channel 19
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.265 – Open Primary, Channel 20
Yellow alarm. Initiated by IC922.
Cause
Ignition energy was not
discharged.
1.4520.270 – Warn. Missing Ring Gear Signal
Yellow alarm. Initiated by IC922.
Cause
Crankshaft signal 182 teeth is
missing.
1.4520.271 – Warning Missing Reset Signal
Yellow alarm. Initiated by IC922.
Cause
Reset signal from crankshaft is
missing.
Corrective action
1. Check cabling to ignition coil (→ Page 202).
2. Check ignition coils.
Corrective action
1. Check cabling to ignition coil (→ Page 202).
2. Check ignition coils.
Corrective action
1. Check cabling to ignition coil (→ Page 202).
2. Check ignition coils.
Corrective action
1. Check cabling to ignition coil (→ Page 202).
2. Check ignition coils.
Corrective action
1. Check cabling to ignition coil (→ Page 202).
2. Check ignition coils.
Corrective action
u Sensor B 13.3, check sensor, sensor gap and cabling, replace as
necessary (→ Page 203) (→ Page 202).
Corrective action
u Sensor B 75, check sensor, sensor gap and cabling, replace as
necessary (→ Page 203) (→ Page 202).
MS150104/03E 2017-09 | Troubleshooting | 87