Possible causes for the open circuit are as follows. As the cause can exist in the connector/coupler or terminal, they need to be checked carefully.
When checking system circuits including an electronic control unit such as ecm, etc., It is important to perform careful check, starting with items which are easier to check.

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Check each terminal visually for poor contact (possibly caused by dirt, corrosion, rust, entry of foreign object, etc.). At the same time, check to make sure that each terminal is fully inserted in the coupler and locked.
If contact tension is not enough, rectify the contact to increase tension or replace. The terminals must be clean and free of any foreign material which could impede proper terminal contact.

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Locate abnormality, if any.

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Battery
Continuity checkWashing the motorcycle
When washing the motorcycle,
follow the instructions below:
Remove dirt and mud from the
motorcycle with running water.
You may use a soft sponge or
brush. Do not use hard materials
which can scratch the
paint.
Wash the entire motorcycle
with a mild detergent or car
...
Carrying a passenger
Carrying a passenger, when done
correctly, is a great way to share
the joy of motorcycling. You will
have to alter your riding style
somewhat since the extra weight
of a passenger will affect handling
and braking. You may also need
to adjust tire pressures and suspension;
please refer to the ...
Starter torque limiter inspection
Removal
Remove the clutch cover. Refer to “clutch removal” in section 5c .
Remove the washers (1), starter idle gear no. 1 (2)
And no. 2 (3).
Remove the starter idle gear no. 2 Bearing (4), shaft
(5) and washer (6).
Hold the starter clutch with the special tool an ...