MTU 12V4000L32F Operating Instructions Manual page 147

569 – AL SAM Missing Data Fault
Red alarm.
Associated parameter 2.1090.128
Cause
This alarm is activated if the ECU
does not receive some messages
to be transmitted from EMU.
Possible problem related to CAN
bus, EMU does not work properly
or a device connected to EMU
does not work properly so that
EMU cannot transmit the
messages from this device
successfully.
570 – L1 Al CAN Max. Retarded Timing
Yellow alarm.
Associated parameter 2.1200.931
Cause
Due to detected knocking, the
cylinder set to maximum retarded
timing has violated the limit value.
571 – L2 Al CAN Max. Retarded Timing
Yellow alarm. Power reduction.
Associated parameter 2.1200.932
Cause
Due to detected knocking, the
cylinder set to maximum retarded
timing has violated the second
limit value. Power reduction is
initiated.
572 – L3 Al CAN Max. Retarded Timing
Red alarm. Engine shutdown.
Associated parameter 2.1200.933
Cause
Due to detected knocking, the
cylinder set to maximum retarded
timing has violated the limit value.
Corrective action
u Check the cabling/connectors of the devices connected to EMU
and ECU bus. Replace devices as necessary.
Corrective action
1. Check emissions (→ Page 47).
2. Check ignition timing (→ Page 176).
3. Check combustion chamber.
4. Check gas quality if feasible (methane number).
Corrective action
1. Check emissions (→ Page 47).
2. Check ignition timing (→ Page 176).
3. Check combustion chamber.
4. Check gas quality if feasible (methane number).
Corrective action
1. Check emissions (→ Page 47).
2. Check ignition timing (→ Page 176).
3. Check combustion chamber.
4. Check gas quality if feasible (methane number).
MS150104/03E 2017-09 | Troubleshooting | 147