Yamaha YZF-R25 Service Manual page 432

Diode 1
Continuity
Positive tester probe → sky blue
"1"
Negative tester probe →
blue/yellow "2"
Continuity
Positive tester probe → sky blue
"1"
Negative tester probe → yel-
low/black "3"
No continuity
Positive tester probe →
blue/yellow "2"
Negative tester probe → sky
blue "1"
No continuity
Positive tester probe → yel-
low/black "3"
Negative tester probe → sky
blue "1"
Diode 2
No continuity
Positive tester probe →
red/white "4"
Negative tester probe →
blue/white "5"
No continuity
Positive tester probe →
blue/white "5"
Negative tester probe →
red/white "4"
Diode 3
Continuity
Positive tester probe → black
"6"
Negative tester probe →
blue/yellow "7"
No continuity
Positive tester probe →
blue/yellow "7"
Negative tester probe → black
"6"
Diode 4
Continuity
Positive tester probe →
black/yellow, yellow/black "8"
Negative tester probe → yel-
low/white "9"
No continuity
Positive tester probe → yel-
low/white "9"
Negative tester probe →
black/yellow, yellow/black "8"
ELECTRICAL COMPONENTS
A
B
C
D
A. Diode 1
B. Diode 2
C. Diode 3
D. Diode 4
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a. Disconnect the diode from the wire harness.
b. Connect the pocket tester (Ω × 1) to the diode
terminals as shown.
c. Check the diode for continuity.
d. Check the diode for no continuity.
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8-87
2 1 3
4
R/W
L/W
5
6
B
L/Y
7
8
B/Y,Y/B
Y/W
9
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