MTU 12 V 4000 Lx4 Operating Instructions Manual page 145

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 governor.
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 governor.
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.
Corrective action
1. ECU restart
2. Check configuration in the ECU
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.
MS15027/00E 2013-10 | Troubleshooting | 145