Yamaha CS50 - Page 174

ELEC
ELECTRIC STARTING SYSTEM
8-15
EAS00761
4. Starter relay
• Disconnect the starter relay coupler from
the coupler.
• Connect the pocket tester (Ω x 1) and bat-
tery (12 V) to the starter relay coupler as
shown.
Positive battery terminal

green/yellow 
Negative battery terminal

blue/white 
Positive tester probe

red 
Negative tester probe

red 
• Does the starter relay have continuity bet-
ween red and red?
EAS00749
5. Main switch
• Check the main switch for continuity.
Refer to “CHECKING THE SWITCHES”.
• Is the main switch OK?
EAS00764
6. Start switch
• Check the start switch for continuity.
Refer to “CHECKING THE SWITCHES”.
• Is the start switch OK?
EAS00766
7. Wiring
• Check the entire starting system’s wiring.
Refer to “CIRCUIT DIAGRAM”.
• Is the starting system’s wiring properly
connected and without defects?
G/Y
R
R
L/W
-+
-
+
4
3
2
1
Replace the starter
relay.
Replace the main
switch.
Replace the right
handlebar switch.
Properly connect or
repair the starting
system’s wiring.
The starting system
circuit is OK.
YES
NO
YES
NO
YES
NO
YES
NO