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650 – Al Req Angle Throttle B
Red alarm.
Associated parameter 2.1200.936
Cause
Corrective action
Opening angle of throttles B
exceeded.
1. Check charge-air pressure reserve.
2. Intake air temperature outside TVU data.
3. Check compressor for contamination.
4. Reduce power.
651 – AL Preheating Error
Yellow alarm.
Associated parameter 1.1480.101
Cause
Corrective action
Engine preheating faulty.
1. Low coolant.
2. Missing differential pressure in coolant system.
3. Coolant pump does not start, is faulty.
652 – AL GET Comm Lost
Red alarm.
Associated parameter 1.4510.996
Cause
Corrective action
CAN bus communication for
knock control 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 (XD10).
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).
122 | Troubleshooting | MS150108/02E 2015-03
TIM-ID: 0000038612 - 001