1.13.8 Monitoring overview - overload protection
P1075, P1076, P1077, P1078, P1079, P1080, P1081, P1082
DC Motor current, control unit temperature and DC Motor overload is monitored through the ECU. This diagnosis checks for over-temperature and short term/long term current overload conditions (looks for current spikes over a threshold, and time vs. current table based).
Error Symptoms:
There are two thresholds (warning and critical) to be distinguished for each diagnosis function.
VVL CONTROL UNIT TEMPERATURE CHART
| warning thresholds: | |
| VVL control unit temperature > 105 °C | P1076, P1080 |
| calculated DC-motor temperature > level 1 | P1077, P1081 |
| Internal modeled electrical load value> level 1 critical threshold: | P1078, P1082 |
| VVL control unit temperature > 163° for 400 ms or |
P1075, P1079 |
| calculated DC-motor temperature > level 2 or |
|
| Internal modeled electrical load value> level 2 | |