MTU 12V2000M40A, Руководство по эксплуатации

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6.3 LOP fault messages
LOP
Fault messages and measuring points (status reports) are displayed as text messages on the LOP display
(DIS). Explanation of the displayed texts can be gathered by pressing the help key on the touchscreen. Fault
messages can also be caused by faulty sensors/actuators. Contact Service to have sensors/actuators
checked and replaced as necessary if the troubleshooting measures listed in the table below prove unsuc-
cessful.
Display text Meaning Measure
AL RCS Speed De-
mand Defect No speed demand signal 1. Check speed demand source sys-
tem (e. g. from automatic on-board
network).
2. Check LOP visually (→ Page 226).
3. Perform LOP test procedures
(→ Page 228).
4. Check ECU plug connection
(→ Page 222).
5. Check engine wiring (→ Page 218).
AL Shutdown Expect-
ed Yellow alarm occurred; Red alarm with
engine shutdown will probably follow 1. Start other genset
as preventive measure.
2. Determine cause of yellow alarm
and rectify.
AL Battery Charge
Fault Battery not being charged 1. Check power circuit breakers and
fuses.
2. Check transistorized regulator.
AL Press. Monitoring
Fail (EMU) EMU pressure monitoring failure Contact Service.
• Have EMU replaced.
AL ECU Defective ECU 4 is defective 1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Check ECU plug connection
(→ Page 222).
4. Check engine wiring (→ Page 218).
5. Contact Service.
• Have ECU checked and replaced
if required.
AL Output Stage Bank
1 Fault Fault message re. power amplifier, cylin-
der bank A 1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Check ECU plug connection
(→ Page 222).
4. Check engine wiring (→ Page 218).
5. Contact Service.
• Have ECU checked and replaced
if required.
AL Output Stage Bank
2 Fault Fault message re. power amplifier, cylin-
der bank B 1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Check ECU plug connection
(→ Page 222).
4. Check engine wiring (→ Page 218).
5. Contact Service.
• Have ECU checked and replaced
if required.
134 | Troubleshooting | MS150031/06E 2016-010
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