c. If the pressure is over low or there is no pressure, it means that the battery has no
normal output, check whether the fuse 70A and 5A of the vehicle are fused(disconnect
the battery first), the fuse of 5A is in the cover of the controller under the cushion, it
can only be seen when it cover is uncovered, if the 70A fuse is fused, check whether
the controller has been burned out, if 5A's fuse is fused, then check whether DC
converter has been burned out
① The methods to measure the controller
Ascertain that the battery is disconnected with the battery plug, open the line ball
cover of the controller, turn the multimeter to buzzing, measure whether the negative
and positive pole of the controller are in the conducted status( change the red probe and
the black probe test to ascertain), if it is conducted, then the controller is burned out, if
it is not conducted, then measure whether the negative pole or positive pole of the
controller and the phase line are conducted(switch the red probe and the black probe
test to ascertain), if they are conducted then the controller has been burned out and
needs to be switched
②Methods to measure the DC converter
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