Yamaha XV1600A1999 Service Manual page 406

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12. Diode
S Remove the diode from the coupler.
S Connect the pocket tester (Ω
diode terminals as shown.
S Check the diode for continuity as follows.
Tester positive probe !
blue/white
Tester negative probe !
blue/yellow
Tester positive probe !
blue/yellow
Tester negative probe !
blue/white
NOTE:
When you switch the tester's positive and
negative probes, the readings in the above
chart will be reversed.
S Are the tester readings correct?
YES
1) to the
1
Continu-
ity
2
2
No conti-
nuity
1
NO
Replace the diode.
IGNITION SYSTEM
EB802415
13. Relay unit (diode)
S Remove the relay unit from the coupler.
S Connect the pocket tester (Ω
relay unit terminals as shown.
S Check the diode for continuity as follows.
Tester positive probe !
Tester negative probe !
Tester positive probe !
Tester negative probe !
NOTE:
When you switch the tester's positive and
negative probes, the readings in the above
chart will be reversed.
S Are the tester readings correct?
YES
EAS00754
14. Wiring
S Check the entire ignition system's wiring.
Refer to "CIRCUIT DIAGRAM".
S Is the ignition system's wiring properly con-
nected and without defects?
YES
Replace the ignitor
unit.
7-16
ELEC
1) to the
sky blue
1
Continu-
ity
blue/yellow
2
blue/yellow
2
No conti-
nuity
1
sky blue
NO
Replace the relay
unit.
NO
Properly connect or
repair the ignition
system's wiring.
E

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Xv1600al 1999

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