Checking The Diode; Checking The Spark Plug Cap - Yamaha YZF-R15 Service Manual

b. Turn the main switch to "ON".
c. Measure the turn signal relay input voltage.
2. Check:
• Turn signal relay output voltage
Out of specification → Replace.
Turn signal relay output voltage
DC 12 V
s s s s s s s s s s s s s s s s s s s s s s s s s s s s
a. Connect the multimeter to the
turn signal relay terminal as shown.
Multimeter
• Positive tester probe →
brown/white "1"
• Negative tester probe →
ground
b. Turn the main switch to "ON".
c. Measure the turn signal relay output voltage.
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CHECKING THE DIODE

1. Check:
• Diode
Out of specification → Replace.
Multimeter
NOTE:
The multimeter or the analog multimeter
readings are shown in the following table.
1
Br W /
Br
ELECTRICAL COMPONENTS
Continuity
Positive tester probe → sky blue
"1"
Negative tester probe →
red/black "2"
No continuity
Positive tester probe →
red/black "2"
Negative tester probe → sky
blue "1"
1
2
s s s s s s s s s s s s s s s s s s s s s s s s s s s s
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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CHECKING THE SPARK PLUG CAP

1. Check:
• Spark plug cap resistance
Out of specification → Replace.
Resistance
3.75–6.25 kΩ
s s s s s s s s s s s s s s s s s s s s s s s s s s s s
a. Remove the spark plug cap from the spark
plug lead.
b. Connect the multimeter ( Ω × 1k) to the
spark plug cap as shown.
Multimeter
8-66
Sb
R B /