MTU MS15027/02E Operating Instuctions page 134

567 – AL L1 P-Intake Air after Filter B
Yellow alarm.
Associated parameter 2.0187.921
Cause
Pressure loss over air filter on B
side is too high.
568 – AL L2 P-Intake Air after Filter B
Yellow alarm.
Associated parameter 2.0187.931
Cause
Pressure loss over air filter on B
side is too high.
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 SAM. Possible problem
related to CAN bus, SAM does
not work properly or a device
connected to SAM does not
work properly so that SAM
cannot transmit the messages
from this device successfully.
570 – L1 AI CAN Max Retarded Timing
Yellow alarm.
Associated parameter 2.1200.931
Cause
The cylinder set to maximum
retarded timing due to knocking
has violated the first limit value.
134 | Troubleshooting | MS15027/02E 2015-04
Corrective action
u Replace air filter (→ Page 172).
Corrective action
u Replace air filter (→ Page 172).
Corrective action
u Check the cabling/connectors of the devices connected to
SAM and ECU bus. Replace devices if necessary.
Corrective action
1. Check emissions.
2. Check ignition timing (→ Page 162).
3. Check combustion chamber.
4. Check gas quality if feasible (methane number).