MTU 12V4000L32F Operating Instructions Manual page 105

1.4520.646 – MIC5 ISE Secon Short Circuit Cyl 17
Yellow alarm. Initiated by MIC5.
Cause
Short circuit in secondary circuit
of cylinder 17 in ignition
sequence.
1.4520.647 – MIC5 ISE Secon Short Circuit Cyl 18
Yellow alarm. Initiated by MIC5.
Cause
Short circuit in secondary circuit
of cylinder 18 in ignition
sequence.
1.4520.648 – MIC5 ISE Secon Short Circuit Cyl 19
Yellow alarm. Initiated by MIC5.
Cause
Short circuit in secondary circuit
of cylinder 19 in ignition
sequence.
1.4520.649 – MIC5 ISE Secon Short Circuit Cyl 20
Yellow alarm. Initiated by MIC5.
Cause
Short circuit in secondary circuit
of cylinder 20 in ignition
sequence.
1.4520.658 – MIC5 E2 Tr2 synchronisation fault
Yellow alarm. Initiated by MIC5.
Cause
Unable to synchronize with signal
from pulse sensor 2 (B75).
1.4520.659 – MIC5 E2 Tr2 operational error
Red alarm. Initiated by MIC5.
Cause
Pulse sensor 2 (B75) has tripped
an operational error.
Corrective action
1. Check ignition lead, connector and igniter.
2. Check ignition coil.
Corrective action
1. Check ignition lead, connector and igniter.
2. Check ignition coil.
Corrective action
1. Check ignition lead, connector and igniter.
2. Check ignition coil.
Corrective action
1. Check ignition lead, connector and igniter.
2. Check ignition coil.
Corrective action
u Check sensor, sensor gap, cabling, data record settings and timing
wheel. Replace sensor as necessary. (→ Page 203) (→ Page 202)
Corrective action
1. Check sensor, sensor gap, cabling, data record settings and timing
wheel. Replace sensor as necessary. (→ Page 203) (→ Page 202)
2. Restart ignition control unit.
MS150104/03E 2017-09 | Troubleshooting | 105