Checking The Diode - Yamaha YZF-R125 Service Manual

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Turn signal relay input voltage
DC 12 V
M MMM M MMM M M MMM M
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. Set the main switch to "ON".
c. Measure the turn signal relay input voltage.
L LLL L LLL L L LLL L
2. Check:
• Turn signal relay output voltage
Out of specification → Replace.
Turn signal relay output voltage
DC 12 V
M MMM M MMM M M MMM M
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/white "1"
• Negative tester probe →
ground
M MMM M M MMM M M MMM M
Br/W
Br
1
L LLL L L LLL L L LLL L
M MMM M M MMM M M MMM M
ELECTRICAL COMPONENTS
MMM
b. Set the main switch to "ON".
c. Measure the turn signal relay output voltage.
L LLL L LLL L
EAS28050

CHECKING THE DIODE

1. Check:
• Diode
Out of specification → Replace.
NOTE:
The pocket tester or the analog pocket tester
readings are shown in the following table.
LLL
MMM
8-67
Br/W
Br
L LLL L L LLL L L LLL L
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Continuity
Positive tester probe →
blue/black "1"
Negative tester probe → sky
blue/white "2"
No continuity
Positive tester probe → sky
blue/white "2"
Negative tester probe →
blue/black "1"
Continuity
Positive tester probe →
red/black "3"
Negative tester probe → sky
blue/white "2"
No continuity
Positive tester probe → sky
blue/white "2"
Negative tester probe →
red/black "3"
1
L LLL L LLL