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ELECTRICAL SYSTEM 16-39
Ignition System
Crankshaft Sensor Inspection
•
Remove:
Right Frame Cover (see Frame chapter)
Crankshaft Sensor Lead Connector [A]
•
Set the hand tester to the × 100 Ω range and connect (+)
lead to the yellow/black lead and (–) lead to the black lead
in the connector.
Special Tool - Hand Tester: 57001– 1394
If there is more resistance than the specified value, the
coil has an open lead and must be replaced. Much less
than this resistance means the coil is shorted, and m ust
be replaced.
Crankshaft Sensor Resistance: 376 ∼ 564 Ω
•
Using the highest resistance range of the tester, measure
the resistance between the crankshaft sensor leads and
chassis ground.
Any tester reading less than infinity (∞) indicates a short,
necessitating replacement of the crankshaft sensor as-
sembly.
Crankshaft Sensor Peak Voltage Inspection
NOTE
○
Be sure the battery is fully charged.
○
Using the peak voltage adapter is a more reliable way
to determine the condition of the crankshaft sensor than
crankshaft sensor internal resistance measurements.
•
Remove:
Right Frame Cover (see Frame chapter)
Crankshaft Sensor Lead Connector (see Crankshaft
Sensor Removal)
•
Set the hand tester [B] to the × 10 V DC range, and con-
nect it a commercially available peak voltage adapter [A]
as shown in the diagram.
•
Connect the black l ead of the adapter to black lead and
red lead to yellow lead in the crankshaft sensor connector.
•
Turn the ignition switch and engine stop switch on.
•
Pushing the starter button, turn the engine 4 ∼ 5sec-
onds w ith the transmission gear in neutral to measure the
crankshaft sensor peak voltage.
•
Repeat the measurement 5 or more times.
Crankshaft Sensor Peak Voltage
Standard:
1.9 V or more
Special Tool - Hand Tester: 57001–1394
Recommended Tool- Peak Voltage Adapter
Type: KEK-54-9-B
Brand: KOWA SE IKI
If the tester reading is not specified one, check the crank-
shaft sensor.