MTU 12 V 4000 L62FB Operating Instructions Manual page 110

459 – SD P-Coolant b. Engine
Red alarm.
Associated parameter 1.8004.627
Cause
Coolant pressure sensor before
engine defective, short circuit or
wire break.
470 – SD T-ECU
Red alarm.
Associated parameter 1.8004.587
Cause
Temperature sensor for engine
governor defective, short circuit
or wire break.
472 – AL Stop SD
Red alarm. Engine shutdown.
Associated parameter 2.8006.593
Cause
Engine stop, since all shutdown
channels have "sensor faulty".
473 – AL Cabling PWM_CM2
Red alarm. Engine shutdown.
Associated parameter 1.8004.593
Cause
Cable break or short circuit on
channel PWM_CM2.
476 – AL Crash Rec.Init Fault
Red alarm.
Associated parameter 1.8010.007
Cause
Initialization error of crash
recorder.
478 – AL Comb. Alarm Yel (Plant)
Yellow alarm.
Associated parameter 2.8006.001
Cause
Combined alarm YELLOW from
plant.
110 | Troubleshooting | MS150098/02E 2016-11
Corrective action
u Check sensor and cabling (B16.3), replace if necessary. Fault is
rectified following engine restart.
Corrective action
u Check sensor and cabling, replace as necessary. Fault is rectified
following engine restart.
Corrective action
u Combined alarm (for details, refer to the source alarm).
Corrective action
u Check cabling to bypass throttle, replace bypass throttle if
necessary.
Corrective action
u Contact Service.
Corrective action
u Combined alarm (for details, refer to the source alarm).