ELECTRICAL SYSTEM 15-15
CKP SENSOR AND CRANKSHAFT ROTATION
SIGNAL SENSOR PEAK VOLTAGE
• Disconnect the magneto lead wire coupler 1.
• Connect the multi circuit tester with the peak volt adaptor A
as follows.
.
09900-25008: Multi circuit tester set
• Measure the highest peak voltage by depressing the kick
starter lever several times forcefully.
• Repeat the above procedure a few times and measure the
highest sensor peak voltage.
CKP sensor peak voltage: 2.8 V and more
Crankshaft rotation signal sensor peak voltage:
3.5 V and more
Tester knob indication: Voltage ()
If the peak voltage is within the specification, check the continu-
ity between the magneto lead wire coupler and ECM coupler.
CKP sensor Crankshaft rotation signal sensor
+ probe R B/R
- probe G R/W
R/W
G
R
B/R
When using the multi circuit tester and peak volt adap-
tor, refer to the appropriate instruction manual.
Normally, use the needle-point probe to the backside
of the lead wire coupler to prevent the terminal bend
and terminal alignment.
ECM coupler (Harness side)
G/WB/WBl
B
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