Yamaha RS90K, Service Manual

Page: 672 / 841

8-24
– +
ELEC
LIGHTING SYSTEM
Inspection steps:
• Disconnect the headlight relay from the coupler.
• Connect the pocket tester (
Ω ×
1) to the head-
light relay terminals as shown.
• If headlight relay does not have continuity
between the blue/white and yellow terminals,
replace it.
• Connect the pocket tester (
Ω ×
1) and battery
(12 V) to the headlight relay terminals as shown.
• If headlight relay does not have continuity
between the blue/white and green terminals,
replace it.
Positive tester probe
→
Blue/White 1
Negative tester probe
→
Yellow
2
Positive battery terminal
→
Light green 3
Negative battery terminal
→
Black
4
Positive tester probe
→
Blue/White 5
Negative tester probe
→
Green
6
1
2
L/W
G
Lg B Y
6
5
4 3
L/W
G
Lg B Y
LOAD CONTROL RELAY
1. Inspect:
• Load control relay
1
Inspection steps:
• Disconnect the load control relay from the cou-
pler.
• Connect the pocket tester (
Ω ×
1) and battery
(12 V) to the load control relay terminals as
shown.
• If load control relay does not have continuity
between the red and blue terminals, replace it.
Positive battery terminal
→
Brown
1
Negative battery terminal
→
Brown/Blue 2
Positive tester probe
→
Red
3
Negative tester probe
→
Blue 4
1
4
3
2 1
R
L
Br Br/L