Checking The Ignition Spark Gap; Checking The Crankshaft Position Sensor - Yamaha 2009 XP500Y TMAX Service Manual

Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe→
red/black "1"
• Negative tester probe →
orange "2"
c. Measure the primary coil resistance.
L LLL L LLL L L LLL L L LLL L
2. Check:
• Secondary coil resistance
Out of specification → Replace.
Secondary coil resistance
12.00–18.00 kΩ
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
• Negative tester probe →
spark plug lead "1"
• Positive tester probe →
spark plug lead "2"
L LLL L L LLL L LLL
M MMM M M MMM M MMM
8-72
ELECTRICAL COMPONENTS
c. Measure the secondary coil resistance.
L LLL L LLL L L LLL L L LLL L
EAS28930

CHECKING THE IGNITION SPARK GAP

1. Check:
• Ignition spark gap
Out of specification → Perform the ignition
system troubleshooting, starting with step 5.
Refer to "TROUBLESHOOTING" on page
8-3.
Minimum ignition spark gap
6.0 mm (0.24 in)
TIP
If the ignition spark gap is within specification,
the ignition system circuit is operating normally.
M MMM M MMM M M MMM M M MMM M
a. Disconnect the spark plug cap from the spark
plug.
b. Connect the ignition checker "1" as shown.
Ignition checker
90890-06754
Opama pet-4000 spark checker
YM-34487
2. Spark plug cap
c. Turn the main switch to "ON" and set the en-
gine stop switch to "
d. Measure the ignition spark gap "a".
e. Crank the engine by pushing the start switch
" " and gradually increase the spark gap un-
til a misfire occurs.
L LLL L LLL L L LLL L L LLL L
EAS28120
CHECKING THE CRANKSHAFT POSITION
SENSOR
1. Disconnect:
• Crankshaft position sensor coupler
(from the wire harness)
L LLL L L LLL L LLL
M MMM M M MMM M MMM
".
L LLL L L LLL L LLL