In-Depth Troubleshooting and Solutions for ECU Malfunctions Resolved by Reconnecting Connectors
1. Core Fault Characteristic Analysis Fault Phenomenon: ECU not functioning → Restored by reconnecting the harness → No physical damage to the connector Essential Cause: Connection stability issue (not a permanent disconnection, but abnormal contact resistance or momentary signal interruption) 2. Five Fundamental Causes and Troubleshooting Methods 1. Poor contact of terminal micro-switches (approx. 40%) … Read more