Throttle Position Sensor; Inspection - Suzuki RM 250 2003 Owner's Service Manual

9-14 FUEL SYSTEM

THROTTLE POSITION SENSOR

INSPECTION

• Disconnect the throttle position sensor coupler.
• Start the engine.
• Measure the throttle position sensor input voltage with the
Multi circuit tester.
# 09900-25008: Multi circuit tester set
$ Tester knob indication: Voltage (%)
" Orange/White ( + probe) – Black/White ( - probe):
• If the voltage is not within the specified value, replace the CDI
unit.
• Measure the throttle position sensor coil resistance with the
Multi circuit tester.
# 09900-25008: Multi circuit tester set
& Tester knob indication: Resistance (Ω Ω Ω Ω )
" Blue ( + probe) – Black ( - probe): 4 – 6 kΩ Ω Ω Ω
" Yellow ( + probe) – Black ( - probe):
When the throttle is full closed: 0.3 – 0.75 kΩ Ω Ω Ω
When the throttle is full opened: 2.5 – 5 kΩ Ω Ω Ω
• If the resistance is correct, it is not necessary to remove the
throttle position sensor.
• If the resistance is not within the specified value, replace the
throttle position sensor assembly.
4 – 6 V (Over 3 000 rpm)
Orange/
Black/Yellow White
Black/White
Blue
Black
Yellow
Black