Suzuki GSX-R750, Service Manual

Page: 180 / 495

FI SYSTEM AND INTAKE AIR SYSTEM 4-33
STVA position sensor produces following voltage.
(0.1
sensor voltage < 4.9)
Without the above value, c28 is indicated. STVA motor can not
move.
STV actuator, STV actuator adjustment, lead wire/coupler.
Gear position signal voltage should be higher than the follow-
ing for more than 3 seconds.
(Gear position sensor voltage > 0.60 V)
Without the above value, c31 is indicated.
Gear position sensor, wiring/coupler connection. Gearshift cam
etc.
When fuel injection signal stops, the c32, c33, c34 or c35 is
indicated.
Injector, wiring/coupler connection, power supply to the in-
jector.
When no signal is supplied from fuel pump relay, c41 is indicated.
Fuel pump relay, connecting lead, power source to fuel pump
relay.
Ignition switch signal is not input in the ECM.
Ignition switch, lead wire/coupler.
c28
c31
c32, c33, c34
or c35
c41
c42
Secondary throttle
valve actuator
Gear position signal
Fuel injector signal
Fuel pump relay
signal
Ignition switch signal