fr vin 2A000001. An electronic Control unit that monitors and Controls various electronic systems in a vehicle's body, and communicates with other on-board computers via the car's vehicle bus. Anti-Theft Infrared Sensor. Central Control Unit. From Chassis/VIN 3A242550. From Chassis/VIN 4A293981. To Chassis/VIN 3A242549. To Chassis/VIN 4A293980. Anti - Theft Infrared Sensor. Body Computer (BCC). Central Timer (CTM). Generic Electronic (GEM).