Monitoring criteria

Monitoring of servo motor overload; The VVT servo motor temperature is calculated in the DME using a model. The first stage occurs when it heats beyond a warning threshold (fault #10819, fault class 2). This is 190°C (VVT motor temperature) and causes the VVT to revert to operation in its emergency mode. If the VVT motor were to overheat even further, the VVT system would be completely deactivated upon reaching the deactivation threshold (200°C VVT motor temperature).