Suzuki 125 Service Manual page 57

56 RV125K7 ('07-MODEL)
Step 2
1) Connect the TP sensor coupler.
2) Turn the ignition switch ON.
3) Measure the TP sensor output voltage (between + P and -
B/Br) by turning the throttle grip.
 TP sensor output voltage
Throttle valve is closed: Approx. 0.7 V
Throttle valve is opened: Approx. 3.9 V
 09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
 Tester knob indication: Voltage ()
Is the voltage OK?
• P, R or B/Br wire open or shorted to ground, or
poor M, 9 or 4 connection
• If wire and connection are OK, intermittent trou-
ble or faulty ECM.
YES
• Recheck each terminal and wire harness for
open circuit and poor connection.
• Replace the ECM with a known good one, and
inspect it again.
If check result is not satisfactory, replace the throt-
NO
tle body assembly with a new one.

When using the multi-circuit tester, do not strongly
touch the terminal of the ECM coupler with a needle
pointed tester probe to prevent the terminal damage
or terminal bend.
4) After repairing the trouble, clear the DTC using SDS tool.
(Page 40)
3
3
ECM coupler (Harness side)
V