Checking The Diode - Yamaha XG250 Service Manual

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a. Connect the pocket tester (DC 20 V) to the
turn signal relay terminal as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Positive tester probe
●
brown "1"
Negative tester probe
●
ground
b. Turn the main switch to "ON".
c. Measure the turn signal relay input voltage.
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2. Check:
Turn signal relay output voltage
●
Out of specification → Replace.
Turn signal relay input voltage
DC 12 V
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a. Connect the pocket tester (DC 20 V) to the
turn signal/hazard relay terminal as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Negative tester probe
●
brown/white "1"
Positive tester probe
●
ground
Br/W
Br
1
7-42
ELECTRICAL COMPONENTS
b. Turn the main switch to "ON".
c. Measure the turn signal relay output voltage.
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EAS28050

CHECKING THE DIODE

1. Check:
Diode
●
Out of specification → Replace.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Continuity
Positive tester probe → blue/
white "1"
Negative tester probe → blue/
black "2"
No continuity
Positive tester probe → blue/
black "2"
Negative tester probe → blue/
white* "1"
L/B
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a. Disconnect the diode from the wire harness.
b. Connect the pocket tester (Ω × 1) to the di-
ode coupler as shown.
c. Check the diode for continuity.
Br/W
1
Br
1
L/W
L/B
2
L/W