Controller Area Network (CAN)

The CAN is an unshielded twisted pair cable, data plus circuit (W/LG) and data minus circuit (P/LG). The CAN may be awake when the key is in the OFF position to carry out functions such as accessory delay. In order to do diagnostics, it is necessary to have the key in the ON position.

The CAN is not designed to operate under single point fault conditions. If either circuit is shorted to voltage or the CAN data plus is shorted to ground, module-to-module and module-to-tester communication is not possible. If the CAN data minus is shorted to ground or an open exists on either bus line, module-to-module and module-to-tester communication is marginal at best. If there are issues with the CAN, there may be missing functionality and problems connecting with a WDS or equivalent tester.