Checking The Crankshaft Position Sensor

ELECTRICAL COMPONENTS

c. Measure the secondary coil resistance.            2. Check:
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲                      • Crankshaft position sensor resistance
ET3P61015
                                                        Out of specification → Replace the crank-
CHECKING THE IGNITION SPARK GAP                         shaft position sensor.
1. Check:
                                                                  Crankshaft position sensor resis-
 • Ignition spark gap
                                                                  tance
   Out of specification → Perform the ignition                      421–569 Ω at 20 °C (68 °F)
   system troubleshooting, starting with step 5.
   Refer to “TROUBLESHOOTING” on page                ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
   8-10.                                             a. Connect the pocket tester (Ω × 100) to the
                                                        crankshaft position sensor coupler as shown.
            Minimum ignition spark gap
             6.0 mm (0.24 in)                                     Pocket tester
                                                                   90890-03112
NOTE:                                                             Analog pocket tester
If the ignition spark gap is within specification,                 YU-03112-C
the ignition system circuit is operating normally.
                                                         • Positive tester probe →
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼                           gray “1”
a. Disconnect the spark plug cap from the spark          • Negative tester probe →
   plug.                                                   black “2”
b. Connect the ignition checker “1” as shown.

            Ignition checker
              90890-06754
            Opama pet-4000 spark checker
              YM-34487

                                                                            B Gy

                                                                        2            1
                                                     b. Measure the crankshaft position sensor re-
                                                        sistance.
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                                                     EAS28130

                                                     CHECKING THE LEAN ANGLE SENSOR
  2. Spark plug cap                                  1. Remove:
                                                      • Lean angle sensor
c. Turn the main switch to “ON” and engine stop      2. Check:
   switch to “ ”.                                     • Lean angle sensor output voltage
d. Measure the ignition spark gap “a”.                  Out of specification → Replace.
e. Crank the engine by pushing the start switch
   “ ” and gradually increase the spark gap un-                   Lean angle sensor output voltage
   til a misfire occurs.                                           Less than 65°: 0.4–1.4 V
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
                                                                   More than 65°: 3.7–4.4 V
EAS28120
                                                     ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
CHECKING THE CRANKSHAFT POSITION                     a. Connect the lean angle sensor coupler to the
SENSOR                                                  wire harness.
1. Disconnect:                                       b. Connect the pocket tester (DC 20 V) to the
 • Crankshaft position sensor coupler                   lean angle sensor coupler as shown.
   (from the wire harness)

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