The main symptoms of starter electromagnetic switch failure include: failure to engage during startup (no power or no response from the starter motor), smoke from the electromagnetic switch during startup (emitting a foul odor), severe heating of the electromagnetic switch terminal, and failure to power off the starter motor. These symptoms usually indicate damage or functional failure of the electromagnetic switch.
Failure to engage during startup (no power or no response from the starter motor): Under normal power on conditions, it may be due to the electromagnetic switch coil being burnt out (if the coil is burnt out, replace the switch coil, it is recommended to replace the electromagnetic switch). There is a jamming phenomenon that causes the electromagnetic switch to not work properly (clean stains, jamming points, and ensure that the electromagnetic switch can work properly).
smoke from the electromagnetic switch during startup (emitting a foul odor): The electromagnetic switch has been working continuously for too long (check if there is a short circuit in the coil). The electromagnetic switch coil is broken and burned out (there will be a smell, replace the coil or switch). Excessive current caused (check if the starter motor is short circuited).
severe heating of the electromagnetic switch terminal, and failure to power off the starter motor：There are stains and sintering on the internal contact points of the switch. (After removing the cover of the switch, clean the contact points to ensure normal power supply. When the contact points are burned out to half, they should be replaced.)
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