764 – AL EASF B to A Open
Cause
Corrective action
After tripping (test / overspeed)
of emergency-air shutoff flaps,
B-side remains closed and A-
side remains open.
1. Check wiring for emergency-air shutoff flap, A-side
(→ Page 160).
2. Contact Service.
765 – AL OL EASF Limit Switch A
Cause
Corrective action
Disruption fault in wiring for
emergency-air shutoff flap, A-
side
1. Check wiring for emergency-air shutoff flap, A-side
(→ Page 160).
2. Contact Service.
766 – AL EASF A to B Open
Cause
Corrective action
After tripping (test / overspeed)
of emergency-air shutoff flaps,
A-side remains closed and B-
side remains open.
1. Check wiring for emergency-air shutoff flap, B-side
(→ Page 160).
2. Contact Service.
767 – AL EASF Closed
Cause
Corrective action
Emergency-air shutoff flaps, A
and B-side, closed
1. Set emergency-air shutoff flaps to "ON" (→ Page 118).
2. Contact Service.
778 – AL EASF Not Closed
Cause
Corrective action
After tripping (test / overspeed)
of emergency-air shutoff flaps,
A-side and B-side remain open.
1. Check wiring of emergency-air shutoff flaps (→ Page 160).
2. Contact Service.
806 – SD Charger 3 Speed
Cause
Corrective action
The speed sensor (B44.3) HP
turbocharger supplies incorrect
signal or no signal.
1. Check engine wiring (→ Page 160).
2. Contact Service.
833 – AL Emission Warning
Cause
Corrective action
Emission fault summary alarm
1. Observe additional messages.
2. Contact Service.
64 | Troubleshooting | MS150096/03E 2015-04
TIM-ID: 0000029153 - 010
