2 pin 7282-6445-40 Automotive Electric Tail Door Wiring Socket Automobile Harness Connector Housing Parts 2.8 Series

1. Fault self-diagnosis test method

Fault self-diagnosis test refers to using a special fault detector to communicate with the vehicle-mounted electronic control unit ECU, or triggering the control program of the vehicle-mounted ECU to run according to a specific operation mode, so as to read the fault code, clear the fault code, and read the internal status of the vehicle-mounted ECU. Control parameters, detect the working status of various sensors and actuators and whether their control circuits are normal, etc. According to the different working status of the engine, the self-diagnosis test method is divided into static test (KOEO, Key ON Engine OFF) and dynamic test (KOER, Key ON Engine Run).

Static test mode (KOEO) refers to a diagnostic test when the ignition switch is turned on (ON) and the engine is not running (OFF), and it is mainly used to read or clear fault codes.

The dynamic test method (KOER) refers to the diagnostic test when the ignition switch is turned on (ON) and the engine is running (Run). It is mainly used to read or clear fault codes, detect the working conditions of sensors or actuators and control them. Whether the circuit is good and data communication with the vehicle ECU (that is, data flow analysis), etc.

2. Fault self-diagnosis test content

Fault self-diagnosis test content includes reading and clearing fault codes, data flow analysis, monitoring actuators and programming matching, etc.

Simple instructions：

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