Suzuki DL1000 Service Manual page 204

Yes
3
Turn the ignition switch OFF.
Connect the STP sensor coupler.
Insert the copper wires to the lead wire coupler.
Disconnect the STVA lead wire coupler.
Turn the ignition switch ON.
Measure the STP sensor output voltage at the coupler
(between Yellow and B/Br wires) by turning the secondary
throttle valve (close and open) with a finger.
; STP sensor output voltage
Throttle valve is closed: Approx. 1.1 V
Tester knob indication : Approx. 4.3 V
z 09900-25008: Multi circuit tester
u Tester knob indication: Voltage ( - )
Yes
Red, Yellow or B/Br wire open or shorted to ground, or poor @ :
connection. ( : 4-22)
, or
If wire and connection are OK, intermittent trouble or faulty
ECM.
Recheck each terminal and wire harness for open circuit and
poor connection. ( : 4-5)
2
If check result is not satisfactory,
No
replace STP sensor with a new
one.
Replace the ECM with a new one,
and inspect it again.
2
3
Yellow
B/Br
3
3
10
ECM coupler
FI SYSTEM 4-45
V