MTU MS15027/02E Operating Instuctions page 147

972 – AL MIC5 Signature difference
Red alarm.
Associated parameter 1.450.969
Cause
The ignition system has not
taken on the configuration from
the Engine Control Unit.
974 – AL CAN3 Bus Off
Yellow alarm.
Associated parameter 2.0500.692
Cause
CAN controller 3 is in "Bus-Off"
status. Bus nodes (ignition,
knock module, throttles or gas
mixer) have faults.
975 – AL CAN3 Error Passive
Yellow alarm.
Associated parameter 2.0500.693
Cause
CAN controller 3 has indicated a
warning. Bus nodes (ignition,
knock module, throttles or gas
mixer) have faults.
976 – AL CAN4 Bus Off
Yellow alarm.
Associated parameter 2.0500.694
Cause
CAN controller 4 is in "Bus-Off"
status. Bus nodes (ignition,
knock module, throttles or gas
mixer) have faults.
977 – AL CAN4 Bus Off
Yellow alarm.
Associated parameter 2.0500.695
Cause
CAN controller 4 has indicated a
warning.
Corrective action
1. ECU restart
2. Check configuration in the ECU
Corrective action
u Check operation of nodes and cabling.
Corrective action
u Check operation of nodes and cabling.
Corrective action
u Check operation of nodes and cabling.
Corrective action
u None
MS15027/02E 2015-04 | Troubleshooting | 147