Yamaha RX10RTL Supplemental Service Manual page 244

LIGHTING SYSTEM
HEADLIGHT BEAM SWITCH
1. Disconnect:
• Headlight beam switch coupler
2. Connect:
• Pocket tester
(to the headlight beam switch coupler)
3. Inspect:
• Headlight beam switch continuity
Faulty → Replace.
Switch position
HI
LO
HEADLIGHT RELAY
1. Inspect:
• Headlight relay (black coupler)
Inspection steps:
• Disconnect the headlight relay from the cou-
pler.
• Connect the pocket tester (Ω × 1) and battery
(12 V) to the headlight relay terminals as
shown.
Low beam
Positive tester probe
Negative tester probe
High beam
Positive battery terminal
Negative battery terminal
Positive tester probe
Negative tester probe
• If headlight relay does not have continuity
between the blue/white and yellow terminals,
replace it.
101
ELEC
Continuity
Yes
No
→
Blue / White
→
Green
→
Black
→
Blue/green
→
Blue/White
→
Yellow