Question about 2001 Yamaha YZF-R1
Examine the rear brake pedal and linkage....there should be a light spring that pulls on the brake switch when you push the pedal down...possibly the spring broke and fell off.
If all is well...there should be a connector nearby for the switch...usually 2 wires....12 V power in on one, and power out to brake light on the other. With a multimeter, unhook connector and with key on...you should have 12 V on one of the two wires in the harness...if you don't...there is a harness issue.
If you have power to the switch, now test for continuity (ohms) across the unhooked switch wires ...should be open (no continuity ) with pedal up, and when you press down pedal...the switch should close and show very low ohms continuity. If you cannot get continuity...normally there is an adjustment to move3 the switch out further so the spring from the pedal pulls on the switch plunger more...if your are unable to get continuity by adjusting switch mount..replace switch..
Posted on Mar 22, 2011
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Posted on Jan 02, 2017
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