434 – HI T-Coolant before Engine
Yellow alarm.
Associated parameter 2.0173.931
Cause
Corrective action
Coolant temperature before
engine too high (limit value 1).
Engine coolant pump failure,
volumetric flow too low, air in
engine coolant circuit.
u
Check engine coolant circuit (pressure and flow).
435 – SS T-Coolant before Engine
Red alarm. engine shutdown.
Associated parameter 2.0173.932
Cause
Corrective action
Coolant temperature before
engine too high (limit value 2).
Engine coolant pump failure,
volumetric flow too low, air in
engine coolant circuit.
u
Check engine coolant circuit (pressure and flow).
443 – HI P-Charge Mix Diff
Yellow alarm.
Associated parameter 2.0183.931
Cause
Corrective action
Difference in mixture pressures
sensed on A and B side is too high
(limit value 1).
1. Check restrictor flaps for varying positions and malfunction.
2. Check mixture lines for leakage.
3. Check sensors and cabling (B79.22, B79.21).
447 – HIHI P-Charge Mix Diff
Red alarm. engine shutdown.
Associated parameter 2.0183.932
Cause
Corrective action
Difference in mixture pressures
sensed on A and B side is too high
(limit value 2).
1. Check restrictor flaps for varying positions and malfunction.
2. Check mixture lines for leakage.
3. Check sensors and cabling (B79.22, B79.21).
MS150098/03E 2018-04
| Troubleshooting | 121
TIM-ID: 0000027858 - 002
