MTU 12 V 4000 L63 Operating Instructions Manual page 118

233 – SD Charger 2 Speed
Yellow alarm.
Associated parameter 1.3011.129
Cause
Speed sensor of secondary
turbocharger defective, short
circuit or wire break.
245 – SD ECU Power Supply Voltage
Red alarm.
Associated parameter 2.8006.589
Cause
Internal governor fault.
266 – SD Speed Demand
Red alarm.
Associated parameter 2.8006.586
Cause
Speed setting signal can no
longer be transmitted from plant.
381 – AL Wiring TOP 1
Yellow alarm.
Associated parameter 2.8006.638
Cause
Short circuit or wire break on
transistor output, plant-side 1
(TOP 1). Activation of yellow
combined alarm faulty.
118 | Troubleshooting | MS150058/01E 2012-07
ZKP-Number:
Corrective action
u Turbocharger speed sensor is not fitted at present.
ZKP-Number:
Corrective action
u Replace ADEC engine governor.
ZKP-Number:
Corrective action
u Check signal and cabling between plant and ADEC.
ZKP-Number:
Corrective action
u Check cabling.