Idle Speed: MFI
- Idle speed is controlled by IAC valve and should not require adjustment. If idle speed needs to be changed, start engine and warm it to operating temperature. Turn all accessories off. Ensure all fuel and emission control system wire connectors and hoses are properly connected. Ensure accelerator cable has free play. Ensure air cleaner and ducts are properly installed and air filter element is in good condition.
- Ensure ignition timing is correct. See IGNITION TIMING
table under IGNITION TIMING. Connect terminal "B" (diagnosis switch) to terminal "D" (ground) using a service wire. See Figure
. MIL (CHECK ENGINE light) should indicate Code 12. Attach duty meter to duty output terminal "F" and ground terminal "D". Remove idle speed adjusting screw protective cap from top of throttle body. See Fig 1
. Turn idle speed adjusting screw to obtain correct idle RPM. See the IDLE SPEED SPECIFICATIONS
and IAC DUTY AT SPECIFIED IDLE SPEED tables.
- On vehicles equipped with A/C, turn A/C switch to ON position and set fan switch to HIGH position. With A/C operating correctly, verify idle is 850-950 RPM and IAC duty is 30-40 percent. If adjustment is required, turn A/C Vacuum Switching Valve (VSV) adjusting screw to obtain correct idle. See IDLE SPEED SPECIFICATIONS
table. Remove service wire, reinstall protective cap to throttle body and recheck idle speed.
Courtesy of SUZUKI OF AMERICA CORP.