Yamaha XV19SX(C) Service Manual page 473

Continuity
Positive tester probe → sky blue
"1"
Negative tester probe →
black/yellow "2"
No continuity
Positive tester probe →
black/yellow "2"
Negative tester probe → sky
blue "1"
Continuity
Positive tester probe → sky blue
"1"
Negative tester probe →
blue/yellow "3"
No continuity
Positive tester probe →
blue/yellow "3"
Negative tester probe → sky
blue "1"
Continuity
Positive tester probe → sky blue
"1"
Negative tester probe → sky
blue/white "4"
No continuity
Positive tester probe → sky
blue/white "4"
Negative tester probe → sky
blue "1"
Continuity
Positive tester probe →
blue/green "5"
Negative tester probe →
blue/yellow "3"
No continuity
Positive tester probe →
blue/yellow "3"
Negative tester probe →
blue/green "5"
5
M MMM M MMM M M MMM M M MMM M
a. Disconnect the relay unit from the wire har-
ness.
b. Connect the pocket tester (Ω × 1) to the relay
unit terminals as shown.
3
1 2 4
M MMM M M MMM M MMM
7-82
ELECTRICAL COMPONENTS
c. Check the relay unit (diode) for continuity.
d. Check the relay unit (diode) for no continuity.
L LLL L LLL L L LLL L L LLL L
Diode 1 (for XV19S(C)/ XV19M(C)/
XV19CTS(C)/ XV19CTM(C))
1. Check:
• Diode 1
Out of specification → Replace.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
NOTE:
The pocket tester and the analog pocket tester
readings are shown in the following table.
Continuity
Positive tester probe → red/yel-
low "1"
Negative tester probe →
red/white "2" or red/white "3"
No continuity
Positive tester probe →
red/white "2" or red/white "3"
Negative tester probe → red/yel-
low "1"
2
3
1
M MMM M MMM M M MMM M M MMM M
a. Disconnect the diode 1 from the wire har-
ness.
b. Connect the pocket tester (Ω × 1) to the diode
1 terminals as shown.
c. Check the diode 1 for continuity.
d. Check the diode 1 for no continuity.
L LLL L LLL L L LLL L L LLL L
Diode 2 (for XV19S(C)/ XV19M(C)/
XV19CTS(C)/ XV19CTM(C))
1. Check:
• Diode 2
Out of specification → Replace.
L LLL L L LLL L LLL
R/W R/W
R/Y
M MMM M M MMM M MMM
L LLL L L LLL L LLL