Suzuki GW250 Service Manual page 181

4-40 FI SYSTEM DIAGNOSIS
Step 3
TP sensor signal circuit check
1) Turn the ignition switch OFF.
2) Remove the seat. (8-5)
3) Disconnect the ECM couplers 1.
4) Check for proper terminal connection to the ECM couplers.
5) If connections are OK, check the following points.
• Resistance
 09900-25008: Multi circuit tester set
09900-25009: Needle-point prove set
 Tester knob indication: Resistance ()
– Between V wire of TP sensor coupler and ECM coupler:
less than 1 
– Between V wire and ground: infinity
– Between V wire terminal and other terminal at TP sensor
connector: infinity
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