Suzuki Swift Sport 2004 Service & Repair Manual page 275

Throttle Valve Operation Check
1) Remove air cleaner outlet hose.
2) Turn OFF ignition switch.
3) Move throttle valve with finger to its full open position
and check that it moves smoothly.
4) Move throttle valve with finger to its completely
closed position and check that it moves smoothly.
5) Take off finger from throttle valve (1) which is at full
open position and check that it moves smoothly by
its return spring and open spring force back to
default position (2) (position where throttle valve is
open by 6° from completely closed position).
6) Take off finger from throttle valve (1) which is at
completely closed position and check that it moves
smoothly by its return spring and open spring force
back to default position.
If check result is not satisfactory, replace electric
throttle body assembly.
2
I4RS0B130004-01
1
I4RS0B130005-01
Engine Electrical Devices:
Electric Throttle Body Assembly Operation Check
1) Remove air cleaner outlet hose.
2) Turn ON ignition switch.
3) Depress accelerator pedal gradually and check that
throttle valve moves smoothly until it opens fully.
4) Release accelerator pedal depressed in Step 3) and
check that throttle valve (1) moves back to default
position (2) (position where throttle valve is open by
6° from its completely closed position).
2
If check result is satisfactory, electric throttle body
system is in good condition. If check result is not
satisfactory, proceed to next step.
5) Perform "Accelerator Pedal Position (APP) Sensor
Assembly On-Vehicle Inspection (Electric throttle
body model)", "Throttle Actuator (Motor) Check" and
if check results are not satisfactory, replace electric
throttle body assembly.
If check results are satisfactory, wire circuit and/or
ECM are faulty.
Throttle Actuator (Motor) Check
1) Turn OFF ignition switch.
2) Disconnect connector from electric throttle body
assembly.
3) Measure resistance between "M1" terminal (1) and
"M2" terminal (2) of electric throttle body assembly.
If measured resistance is out of specified value,
replace electric throttle body assembly.
Throttle actuator (motor) resistance
0.3 – 100 Ω at 20 °C, 68 °F
1
I4RS0B130005-01
1
2
I4RS0B130023-01
1C-3