653 – AL IC92x Comm Lost
Red alarm
Associated parameter 1.4520.996
Cause
Corrective action
CAN bus communication for
ignition system faulty
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).
654 – AL FSeries Comm Lost
Red alarm
Associated parameter 1.4530.996
Cause
Corrective action
CAN bus communication for
bypass flap faulty
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).
655 – AL TecJet Comm Lost
Red alarm
Associated parameter 1.4540.996
Cause
Corrective action
CAN bus communication for gas
control valve faulty
(alternatively, a step motor with
gas mixer can be installed)
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).
656 – AL ProActA Comm Lost
Red alarm
Associated parameter 1.4550.096
Cause
Corrective action
CAN bus communication for
throttle A faulty
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).
657 – AL ProActB Comm Lost
Red alarm
Associated parameter 1.4550.196
Cause
Corrective action
CAN bus communication for
throttle B faulty
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).
118 | Troubleshooting | MS150097/01E 2013-10
TIM-ID: 0000027858 - 001