Thanks to the Variable Distribution System (VVT) or Variable Time of the Cam (VCT), the motor can have a greater power in its different points of operation. In this system is the valve OCV (Oil Control Valve) along with other components.
The CMP sensor (Camshaft Position Sensor) is inspected by the PCM (Power Train Control Module) by means of a low reference circuit and a high control circuit.
The high control circuit sends a signal modulated by pulse width, the value is 12 volts from the Powertrain Control Module to the solenoid of the CMP sensor actuator (Camshaft Position Sensor). This is to handle the quantity of oil flow coming from the engine to the cam frames. On the other hand, the return circuit is used as such by the low reference circuit. The PCM (Powertrain Control Module) monitors the good operation of the high control, as well as the low reference circuit. If the Powertrain Control Module (PCM) sense a strange behavior in the circuit, that is, short circuit to ground or voltage, the DTC code P0013 OBD II is established.