Suzuki GSR600 Service Manual page 224

8) If OK, then measure the STP sensor resistance at the wire
terminals (between terminal A and terminal C).
 STP sensor resistance: Approx. 4.69 kΩ
 09900-25008: Multi-circuit tester set
09900-28630: TPS test wire harness
 Tester knob indication: Resistance (Ω)
Are the continuity and resistance OK?
YES Go to Step 3.
• Reset the STP sensor position correctly.
NO
• Replace the STP sensor with a new one.
9) After repairing the trouble, clear the DTC using SDS tool.
(4-26)
Step 3
1) Turn the ignition switch to OFF.
2) Connect the STP sensor coupler to the test harness.
3) Disconnect the STVA lead wire coupler.
4) Turn the ignition switch to ON.
5) Measure the STP sensor output voltage at the wire terminal
(between + terminal B and - terminal C) by turning the
secondary throttle valve (close and open) with a finger.
 STP sensor output voltage
Secondary throttle valve is closed : Approx. 0.5 V
Secondary throttle valve is opened : Approx. 3.9 V
 Tester knob indication: Voltage ()
Is the voltage OK?
• R, Y/W or B/Br wire open or shorted to ground,
or poor A, J or S 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 STP
NO
sensor with a new one.
After repairing the trouble, clear the DTC using SDS tool.
(4-26)
FI SYSTEM DIAGNOSIS
2
Y/W
STP
B/Br
3
Y/W
STP
R
B/Br
3 3
3
ECM couplers (Harness side)
4-71
R
ECM
ECM