Hisun HS400 Service Manual page 262

TROUBLESHOOTING
1. Check if the 2/4WD switch is working.
• Turn on the switch, put the gear to position N; keep front and rear wheel off the
ground , and then roll the front wheel to see if the rear wheel moves together with
it or if it turns alone..
• If the wheels are not locked together, please check the electrical circuits with a
multimeter, if there is no power, please check the fuse.
2. Check if the rear differential is working.
• Check the sound. When the switch is turned on, the magneto valve will make a
sound to show that it is engaging and disengaging, and the rear wheel won't be
able to rotate in the same direction.
• If no sound is made, check if the controller of magnetic valve has a output of 12V
electricity, and check if the magnetic valve has a input of 12V electricity, if it has
the input, it means the valve doesn't work, please change for a new one ; if not ,
please check the input end of controller to see if it has power, if it does, change it
out for a new controller, if not , check the fuse.
Electrical
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