I. Cause Analysis of Wire Harness Line Faults

 

Poor contact between connectors and cables, short circuit, break circuit, tie-up and so on. The main reasons are as follows.

 

1. Natural factors. After a long period of use and catalysis in special environment, the harness leads to cable aging, insulation layer damage and mechanical strength decline, resulting in short-circuit, circuit breakage and iron-tapping of electrical cables, causing cable or electrical components to burn. In addition, after long-term use of terminal oxidation deformation, resulting in contact failure, can also make electrical appliances can not work properly.

 

2. Electrical failure. Electrical appliances may cause faults such as short circuit of automobile wiring harness or tie-up due to long-term use or other reasons.

 

3. Human factors. When installing or repairing the harness, the damage of the insulation layer of the harness cable caused by human factors, or the incorrect location of the installation of the harness, or the failure to connect strictly according to the installation drawing, may lead to the damage of the automobile harness. In addition, failing to restore the wiring harness according to the circuit diagram or causing problems of random connection, random cutting and confusion in the repair of the wiring harness faults of automobiles can easily lead to faults of electrical appliances and wiring harnesses of automobiles.

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