FI SYSTEM/ CVT SYSTEM 6-51
“C54” CVT SECONDARY PULLEY REVOLUTION SENSOR CIRCUIT MAL-
FUNCTION
INSPECTION
DETECTED CONDITION POSSIBLE CAUSE
The CVT secondary pulley revolution signal is not
input to CVT control unit at speed of 20 km or
higher.
• Sensor circuit open or short.
• Metal particles or foreign material being attached
on the speed sensor.
• Revolution sensor malfunction.
• CVT control unit malfunction.
• Remove the foot board. (
:
9-18)
• Place the motorcycle on the center stand and put the side
stand in.
1
2
OK
NG
;
CVT secondary pulley revolution sensor
resistance: 400 – 600 Ω
(Yellow – White)
z
09900-25008: Multi circuit tester
t
Tester knob indication: Resistance (Ω)
;
Revolution sensor peak voltage
: More than 5.0 V (at idle speed)
(
+
Yellow –
-
White)
z
09900-25008: Multi circuit tester
u
Tester knob indication: Voltage (
-
)
Replace the revolution
sensor with a new one.
NG
OK
Loose or poor contacts on
the CVT control unit coupler.
CVT control unit
malfunction.
Turn the ignition switch OFF.
Check the CVT secondary pulley revolution sensor
coupler
1
for loose or poor contacts.
If OK, then measure the revolution sensor resistance.
Disconnect the revolution sensor coupler and measure
the resistance between Yellow and White wire terminals.
Remove the revolution sensor lead wire coupler.
Start the engine and measure the revolution sensor peak
voltage at idle speed.
Repeat the above procedure a few times and measure
the highest peak voltage.
Next page
V
Ω
Ω
1
1
2
Peak volt
adaptor
Peak volt
adaptor
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