The ignition system COP (Coil in the plug) is very used in modern engines. This has an individual coil that corresponds to each cylinder and is controlled by the PCM (Powertrain Control Module). This is no longer necessary spark plug wires, since the coil is located above the spark plug. They are connected by 2 cables, one is power that comes from the battery, which, in general, is from the power distribution center. The other cable belongs to the coil excitation circuit of the Power Train Control Module (PCM).
The PCM ground and disconnects this circuit and thus activates and deactivates the coil. The exciter circuit of the coil is monitored by the PCM, in case a fault occurs. If a short circuit is detected in the driver circuit of coil number 3, the DTC code P0353 OBD2 is set.