What are the reasons why the Corolla's high beam does not work?

[VanArianna]

There are several reasons why the Corolla's high beam may not work, including a damaged high beam fuse or issues with the high beam relay. The details are as follows: Damaged High Beam Fuse: Solution: It is recommended to first check the high beam fuse, then measure the input and output signals of the high beam switch and replace it promptly if necessary. High Beam Relay Issue: Solution: For contacts made of different materials, different processes should be used. Some harder contact materials should undergo annealing treatment before contact manufacturing, riveting, or spot welding. Faulty High Beam Main Connector: Solution: It is advised to first check the high beam fuse, then measure the input and output signals of the high beam switch. If there is an input signal but no output signal, it indicates that the high beam switch is damaged and needs to be replaced. If there is no output signal, the related wiring should be inspected.