MTU 8V4000Lx4 Operating Instructions Manual page 134

557 – AL speed drop fault
Red alarm. Engine stop.
Associated parameter 2.1090.126
Cause
Speed drop. Alarm is activated if
engine speed drops during
starting sequence.
559 – AL mixture throttle A fault
Red alarm. Engine stop.
Associated parameter 1.1450.010
Cause
A problem related to mixture
throttle on A side occurred.
Possible causes: Mixture throttle
defective, no power supply to
throttle, cabling of feedback
and/or position signal faulty.
560 – AL mixture throttle B fault
Red alarm. Engine stop.
Associated parameter 1.1450.013
Cause
A problem related to mixture
throttle on B side occurred.
Possible causes: Mixture throttle
defective, no power supply to
throttle, cabling of feedback
and/or position signal faulty.
565 – AL L1 P-Intake Air after Filter A
Yellow alarm.
Associated parameter 2.0186.921
Cause
Pressure loss over air filter on A
side is too high.
566 – AL L2 P-Intake Air after Filter A
Yellow alarm.
Associated parameter 2.0186.931
Cause
Pressure loss over air filter on A
side is too high.
134 | Troubleshooting | MS15026/00E 2015-05
Corrective action
u Check gas train.
Corrective action
u Check mixture throttle on A side and cabling. Replace mixture
throttle on A side if necessary.
Corrective action
u Check mixture throttle on B side and cabling. Replace mixture
throttle on B side if necessary.
Corrective action
u Replace air filter (→ Page 173).
Corrective action
u Replace air filter (→ Page 173).