MTU 12 V 4000 L63 Operating Instructions Manual page 127

517 – SD P-Charge Mix before Throttle
Red alarm.
Associated parameter 1.8004.631
Cause
Mixture pressure sensor before
throttle defective, short circuit or
wire break.
520 – SD P-Intake Air after Filter A
Yellow alarm.
Associated parameter 1.0186.900
Cause
Intake air pressure sensor after
filter on A side defective, short
circuit or wire break.
522 – SD P-Intake Air after Filter B
Yellow alarm.
Associated parameter 1.0187.900
Cause
Intake air pressure sensor after
filter on B side defective, short
circuit or wire break.
531 – AL Wiring PWM_CM1
Red alarm.
Associated parameter 1.1044.900
Cause
Cable break or short circuit on
channel PWM_CM1.
ZKP-Number:
Corrective action
u Check sensor and cabling (B79.23), replace if necessary. Fault
is rectified when engine is restarted.
ZKP-Number:
Corrective action
u Check sensor and cabling (B81.1), replace if necessary. Fault is
rectified when engine is restarted.
ZKP-Number:
Corrective action
u Check sensor and cabling (B81.2), replace if necessary. Fault is
rectified when engine is restarted.
ZKP-Number:
Corrective action
u Check cabling to TecJet throttle, replace TecJet throttle if
necessary.
MS150058/01E 2012-07 | Troubleshooting | 127