C54" Cvt Secondary Pulley Revolution Sensor Circuit Malfunction - Suzuki AN650 2002 Service Manual

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