How to Check for Automotive ECU (Engine Control Unit) Failures?

[StPaul]

Below are the methods to inspect automotive ECU failures: 1. First, examine the ECU control circuit to rule out any circuit faults; 2. Then inspect the ECU system, including the condition of circuit boards and electronic components. Additional Information: The vehicle's ECU primarily consists of a microcomputer, integrated microprocessor memory chips, and input/output interface units. The core component of the ECU is the CPU, which converts input signals into digital form, compares them with stored reference data, calculates output values, and converts them into voltage outputs to precisely control the vehicle's fuel injection quantity.