Check Wiper Motor; Check The Motor Of Spraying Cleaner - Lifan 620 Maintenance Manual

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Check the conductivity between terminals of wiper connector of the wiper combination switch
①
assembly. When the wiper is at MIST, the terminal 2 and terminal 11 should be conducted. When
at OFF, terminal 2 and terminal 10 should be conducted; when at INT, terminal 2 and terminal 10
should be conducted as well as terminal 2 and terminal 11; when at LO, terminal 2 and terminal 11
should be conducted; when at HI, terminal 11 and terminal 1 should be conducted.
Check the conductivity between terminals of was her connector of the wiper combination switch
②
assembly. When the washer is at OFF, the terminals should be not conducted; at ON, terminal 3
and terminal 11 should be conducted.
(2) Check the operation of wiper position of the wiper combination switch assembly
Locate the wiper combination switch assembly at OFF, connect the battery positive pole with
terminal 11 of the wiper switch connector, and connect the negative pole with the terminal 8.
Connect the test probe of the positive pole of voltmeter with the terminal 3 of right combination
switch connector; and test probe of negative pole with terminal 8; locate the right combination
switch at OFF→ON→OFF of washing position; check the voltage between terminal 3 and 8 of the
wiper switch connector which should be less than 1V→10～14V→less than 1V.

2. Check wiper motor

(1) Low-speed operation: Connect the battery positive pole with the terminal 1 of wiper motor
connector; negative pole with terminal 5. The motor should run at low speed. See F7 for wiper
motor connector.
(2) High-speed operation: Connect the battery positive pole with the terminal 4 of wiper motor
connector; negative pole with terminal 5. The motor should run at high speed. See F7 for wiper
motor connector.
(3) Automatic stop: Connect the battery positive pole with the terminal 1 of wiper motor connector;
negative pole with terminal 5. When the motor runs at low speed, disconnect terminal 1 to make
the wiper motor stop at any position except the automatic stop position. Shortly connect terminal 1
and 3, and connect the positive pole with the terminal 2, and then restart the motor and run it at
low speed. The motor should stop at the automatic stop position. See F7 for wiper motor
connector.

3. Check the motor of spraying cleaner

Firstly install the motor and water pump onto the water tank of the spraying cleaner, and then fill
water. Connect the battery positive pole with the terminal 1 of motor of spraying cleaner, and
negative pole with terminal 2. The water should be sprayed from the water tank. See W1 for motor
connector of the spraying cleaner.
Note:
As shown in Fig. 4-102, before installing the wiper arm, firstly clean the pivot area to avoid the
possibility of a loose arm.
Fig. 4-102
252
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