Yamaha FJR13AY 2009 Service Manual page 718

M MMM M MMM M M MMM M M MMM M
a. Disconnect the relay unit coupler from the
wire harness.
b. Connect the pocket tester (Ω × 1) to the relay
unit terminal as shown.
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
EAS28070
CHECKING THE SPARK PLUG CAPS
The following procedure applies to all of the
spark plug caps.
1. Check:
• Spark plug cap resistance
Out of specification → Replace.
Resistance
10.0 kΩ
M MMM M MMM M M MMM M M MMM M
a. Remove the spark plug cap from the spark
plug lead.
b. Connect the pocket tester (Ω × 1k) to the
spark plug cap as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
c. Measure the spark plug cap resistance.
L LLL L LLL L L LLL L L LLL L
EAS28100
CHECKING THE IGNITION COILS
The following procedure applies to both of the ig-
nition coils.
1. Check:
• Primary coil resistance
Out of specification → Replace.
Primary coil resistance
1.53–2.07 Ω at 20 °C (68 °F)
M MMM M M MMM M MMM
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M MMM M M MMM M MMM
L LLL L L LLL L LLL
8-235
ELECTRICAL COMPONENTS
M MMM M MMM M M MMM M M MMM M
a. Disconnect the ignition coil connectors from
the ignition coil terminals.
b. Connect the pocket tester (Ω × 1) to the igni-
tion coil as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
red/black or red/blue "1"
• Negative tester probe →
orange or gray/red "2"
c. Measure the primary coil resistance.
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2. Check:
• Secondary coil resistance
Out of specification → Replace.
Secondary coil resistance
12–18 kΩ at 20 °C (68 °F)
M MMM M MMM M M MMM M M MMM M
a. Disconnect the spark plug cap from the igni-
tion coil.
b. Connect the pocket tester (Ω × 1k) to the ig-
nition coil as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
Spark plug lead "1"
• Negative tester probe →
Spark plug lead "2"
M MMM M M MMM M MMM
L LLL L L LLL L LLL
M MMM M M MMM M MMM