Suzuki GSX1400 Service Manual page 155

4-36 FI SYSTEM
3
Connect the TP sensor coupler.
Insert the copper wires to the lead wire coupler.
Turn the ignition switch ON.
Measure the TP sensor output voltage at the coupler (be-
tween Yellow and Black wires) by turning the throttle grip.
TP sensor output voltage
Throttle valve is closed:
Throttle valve is opened: Approx. 4.3 V
09900-25008: Multi circuit tester
Tester knob indication: Voltage (
No
Yes
Red, P/B or B/Br wire open or shorted to ground, or poor 0, I
or X connection. (
4-22)
If wire and connection are OK, intermittent trouble or faulty ECM.
Recheck each terminal and wire harness for open circuit and
poor connection. ( 4-4)
www.GSX1400FE.com
Approx. 1.1 V
)
If check result is not satisfactory,
replace TP sensor with a new one.
Replace the ECM with a new one,
and inspect it again.
3
ECM coupler