Door Lock Heating

Door Lock Heating (Optional)

Purpose of the System
The Driver's door lock cylinder is surrounded by a heating coil to warm the lock cylinder if in case it is frozen due to moisture and below freezing temperatures.

Principle of Operation
The GM controls the lock heater by providing voltage through a final stage transistor. The heater is switched on by raising the driver's door handle. Prerequisites for heater operation include:
- Vehicle locked
- Door handle raised for approximately 3 seconds

Power is applied to the heater for a maximum of 32 seconds. A timed arrest of 16 minutes is activated after 3 heating attempts. The door lock heater is switched off immediately after unlocking the door.





System Components: Inputs - Processing - Outputs