How to Troubleshoot Automotive Wiring Harness Burnout Failures?

1 Answers
SanRyder
07/29/25 3:20pm
Automotive wiring harness burnout failure troubleshooting method: Locate the specific fault position by checking the breakage of the fuse, as the fuse is designed to protect the vehicle's circuit. When a circuit fault occurs, the fuse burns out first. During the design of the wiring harness, manufacturers may fail to adhere to manufacturing standards, resulting in substandard harnesses, or the harness may be twisted too tightly during assembly, leading to breakage. The causes of automotive wiring harness breakage can be divided into internal and external factors. Internal factors include the main harness distributing branches that are designed too short, causing breakage during vehicle operation. External factors include modifications to the harness leading to breakage, or the harness being scraped, resulting in breakage. The repair method involves cutting off the burned insulation layer of the harness, trimming both ends of the wire, and reconnecting it with a wire of the same specification and length.
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