Workshop Hints
SHD Self Diagnosis
The SHD monitors operation and stores fault codes if a defect is determined. The SHD monitors the following conditions
- SHD motor relays - The relays are checked for sticking contacts (plausibility) and nonfunctional contacts.
- Hall effect position sensors - The SHD must detect a pulse frequency from the hall effect sensor(s) during operation.
- Sunroof Switch - The SHD monitors the signal plausibility of the coded signaling from the sunroof switch.