MTU 12 V 4000 L62FB Operating Instructions Manual page 121

653 – AL IC92x Comm Lost
Red alarm
Associated parameter 1.4520.996
Cause
CAN bus communication for
ignition system faulty
654 – AL FSeries Comm Lost
Red alarm
Associated parameter 1.4530.996
Cause
CAN bus communication for
bypass flap faulty
655 – AL TecJet Comm Lost
Red alarm
Associated parameter 1.4540.996
Cause
CAN bus communication for gas
control valve faulty (alternatively,
a step motor with gas mixer can
be installed)
656 – AL ProActA Comm Lost
Red alarm
Associated parameter 1.4550.096
Cause
CAN bus communication for
throttle A faulty
657 – AL ProActB Comm Lost
Red alarm
Associated parameter 1.4550.196
Cause
CAN bus communication for
throttle B faulty
Corrective action
1. Check cabling.
2. Check power supply.
3. Carry out restart of ECU, EMU & knock control.
4. Check settings with device-specific dialog software (in device).
Corrective action
1. Check cabling.
2. Check power supply.
3. Carry out restart of ECU, EMU & bypass flap.
4. Check settings with device-specific dialog software (XD50.3).
Corrective action
1. Check cabling.
2. Check power supply.
3. Carry out restart of ECU, EMU & gas control valve.
4. Check settings with device-specific dialog software (XD11).
Corrective action
1. Check cabling.
2. Check power supply.
3. Carry out restart of ECU, EMU & throttle A.
4. Check settings with device-specific dialog software (XD50.1).
Corrective action
1. Check cabling.
2. Check power supply.
3. Carry out restart of ECU, EMU & throttle B.
4. Check settings with device-specific dialog software (XD50.2).
MS150098/02E 2016-11 | Troubleshooting | 121