Principles of Operation

The vehicle has 3 module communications network protocols:

• controller area network (CAN)
• standard corporate protocol (SCP) communications network
• international standards organization (ISO) 9141 communications network

The WDS or equivalent tester connects to the communications networks through the data link connector (DLC). The DLC allows a WDS or equivalent tester access to diagnose and test the vehicle systems of any module on the communications networks.

All 3 communications networks are connected to the DLC. This makes diagnosis and testing of these systems easier by allowing one WDS or equivalent tester to be able to diagnose and control any module on the 3 communications networks from one common connector. The DLC can be found under the instrument panel between the steering column and the driver door.