On-board diagnostics (OBD) system [Toyota RAV4 XA10]

Portable scanners are used to analyze engine management systems. All models are equipped with an OBD-II onboard diagnostic system. This system consists of an onboard computer, called the engine control module (PCM), and information sensors that monitor various engine functions and send data to the PCM. This system includes a number of diagnostic recorders that detect malfunctions in the fuel injection and evaporative emission control systems and store the information in the computer's memory. This updated system also checks and diagnoses sensors and clears codes. A 16-pin data link connector (DLC) is used to connect to a powerful diagnostic computer. The PCM electronically controls the fuel system and the evaporative emission system. Based on the information received from the sensors, the PCM controls various relays, fuel injectors and other devices and actuators through output signals. The PCM is configured to optimize exhaust gas toxicity, maintain the vehicle's dynamic performance while maintaining fuel economy.

[The text is taken from the specified website ToyotaMan.ru]