Suzuki GSX-R750, Service Manual

Page: 194 / 495

FI SYSTEM AND INTAKE AIR SYSTEM 4-47
If the position sensor output voltage is less than 0.2 V at
fully close position, adjust the output voltage to specified
by turning out the No.2 cable adjuster
1
.
Adjusting the cable with the ST valve fully opened
or fully closed can damage the STV actuator. Be
sure to adjust the cable with the ST valve set in
adjustment position.
If the position sensor output voltage is more than 4.8 V at
fully open position, adjust the output voltage to specified
by turning out the No.1 cable adjuster
2
.
Repeat the above procedure until the output voltage be-
comes specified value.
Position sensor output voltage
ST valve is fully close: 0.2 Output Voltage 0.8
ST valve is fully open: 4.2 Output Voltage 4.8
No
Replace the STV actuator
with a new one.
Yes
Replace the ECM with a new one
Turn the ignition switch OFF.
Disconnect the motor lead wire coupler
1
of the STV
actuator.
Apply 12 volts to the terminal and check the movement of
STV actuator.
Then, swap the wires supplied 12 volts and check the
movement of STV actuator.
Check the STV actuator both way movements.
No
Replace the STV actuator
with a new one.
Yes
Loose or poor contacts on the STV actuator or
ECM coupler.
2-B
6-A
6-A
6-A
2-B
12 V
Gray Gray Pink Pink
2-B
12 V
Gray Gray Pink Pink
2-B