Yamaha TZR50 '03 Service Manual page 234

• Remove the bulb of the tail light/ brake light
• Connect the pocket tester (Ω x 1) to the bulb
2. Front brake switch
• Disconnect the coupler of the front switch (brown and
green/yellow) of the connector.
• Connect the pocket tester (W x 1 ) to the cables of
the brake switch
(+) probe of tester
(-) probe of tester
• Check whether the continuity is correct in the brake
switch
Switch
position
Applying front brake
Not applying front b.
: Continuity
SIGNALING SYSTEM
CONTINUITY OK
Brown terminal
Green/yellow terminal
In good In bad
condition condition
X
X
X : There is no continuity
IN GOOD CONDITION
*
NO CONTINUITY
Replace the tail light / brake light
bulb
IN BAD CONDITION
X
X
Replace the front brake switch.
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ELEC