Yamaha SR400 2014 Service Manual page 314

Check each switch for continuity with the pocket tester. If the continuity reading is incorrect, check the
wiring connections and if necessary, replace the switch.
ECA14370
NOTICE
Never insert the tester probes into the coupler terminal slots "a". Always insert the probes from
the opposite end of the coupler, taking care not to loosen or damage the leads.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
TIP
• Before checking for continuity, set the pocket tester to "0" and to the "  1" range.
• When checking for continuity, switch back and forth between the switch positions a few times.
The switches and their terminal connections are illustrated as in the following example of the main
switch.
The switch positions "a" are shown in the far left column and the switch lead colors "b" are shown in the
top row.
The continuity (i.e., a closed circuit) between switch terminals at a given switch position is indicated by
" ".
There is continuity between red, brown/red, and brown/blue and between blue/yellow and blue/black
when the switch is set to "ON".
There is continuity between red and brown/blue when the switch is set to "P".
ELECTRICAL COMPONENTS
R Br/R Br/L L/Y L/B
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