Automobile wiring harness refers to a component that is formed by bundling the wire harness to form a connection circuit after the contact terminal punched out of copper is crimped with the wire and cable, and then an insulator or a metal shell is added on the outside. In practical applications, due to the high strength of use, harsh working environment, and substandard production quality, automotive wiring harnesses can easily cause extreme safety problems once they fail. So what problems are prone to occur in the use of automotive wiring harnesses?
1. Harness wear
It is inevitable that there will be bumps in the movement of the car, especially the chassis wiring harness, and the risk of wear is relatively high. When the wiring harness and the suspension are rubbed and broken down, it will cause grounding and cause the electronic stability system to fail.
2. Water in the wiring harness
If the sealing process is not properly controlled in the production of the wiring harness, the body control module (BCM) or the wiring harness at the connection between the BCM and the A-pillar of the body may be damaged due to water ingress.
3. The wire harness is scorched and ablated
For automobiles, wiring harnesses installed near heat sources such as engines, exhaust pipes, and water pipes are often scalded and scorched due to lack of clips, resulting in electrical equipment failure and eventually spontaneous combustion.
4. Poor wiring harness contact
Poor wiring harness assembly connector is a common failure mode for engine wiring harnesses. Too many poor contact problems occur in the connector, such as the quality of the sheath is not good enough; the assembly process is not good enough, the coating setting is unreasonable, and the terminals are oxidized too quickly etc. is one of the reasons. Poor wiring harness contact does not seem fatal, but there are many hidden dangers, and it is easy to reduce the use experience. For example, the headlights do not turn on, the engine does not start, the window regulator does not work, etc., it may be caused by it.
5. Harness breaks
Harness breakage is a common vehicle failure mode, and the reasons can be simply listed as: the design of the wiring harness branch is too short; the wiring harness manufacturing is not standardized; the wiring harness is twisted during assembly, etc. Because some line speeds are subject to buckling, this type of fracture risk is often difficult to avoid.
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