MTU 12 V 4000 M23F Operating Instructions Manual page 148

469 – SD AUX 1
Cause
Analog input signal for Aux 1
faulty; short circuit or wire
break.
470 – SD T-ECU
Signal error, engine governor temperature
Yellow alarm; warning
Cause
Temperature sensor for engine
governor faulty.
Short circuit or wire break.
471 – SD Coil Current
Signal error, HP fuel control block
Yellow alarm; warning
Cause
Actuation of HP fuel control
block faulty.
Short circuit or wire break.
472 – AL Stop SD
Engine stops
Red alarm; engine shutdown
Cause
Engine stops because 'Sensor
faulty" present at channels.
473 – AL Wiring PWM_CM2
Cause
Wire break or short circuit on
channel PWM_CM2.
148 | Troubleshooting | MS150068/01E 2014-01
ZKP-Number: 1.8004.590
Corrective action
u Check signal sensor and wiring, replace as necessary.
Fault is rectified following engine restart.
ZKP-Number: 1.8004.587
Corrective action
1. Check sensor and wiring, replace as necessary (→ Page 265).
2. Engine restart (→ Page 77).
3. Contact Service.
ZKP-Number: 1.8004.592
Corrective action
1. Check sensor and wiring, replace as necessary (→ Page 265).
2. Contact Service.
ZKP-Number: 2.8006.593
Corrective action
1. Check wiring (→ Page 265).
2. Contact Service.
ZKP-Number: 1.8004.593
Corrective action
1. Check wiring.
2. Contact Service.