Suzuki RM125 - Throttle Position Sensor; Inspection

FUEL SYSTEM 11-11
THROTTLE POSITION SENSOR
INSPECTION
THROTTLE POSITION SENSOR INPUT VOLTAGE
• Disconnect the throttle position sensor coupler 1.
• Shift the transmission into neutral.
• Start the engine.
• Measure the throttle position sensor input voltage with the
multi circuit tester.
 B/G (+ probe) – B/Br (- probe):
4 – 6 V (Over 3 000 r/min)
 09900-25008: Multi circuit tester set
 Tester knob indication: Voltage ()
• If the voltage is not within the specified value, replace the CDI
unit.
THROTTLE POSITION SENSOR COIL RESISTANCE
• Measure the throttle position sensor coil resistance with the
multi circuit tester.
 Bl (+ probe) – B (- probe): 4 – 6 kΩ (Reference data)
 09900-25008: Multi circuit tester set
 Tester knob indication: Resistance (Ω)
 Y (+ probe) – B (- probe):
When the throttle is full closed:
0.4 – 0.6 kΩ (Reference data)
When the throttle is full opened:
2.7 – 4.04 kΩ (Reference data)
• If the resistance is correct, it is not necessary to replace the
throttle position sensor.
• If the resistance is not within the specified value, replace the
throttle position sensor assembly.
B/Br
B/GB/G
B/Br
B
B
Bl
Bl
Bl
B
B
B
Y
Y
Y
B