Idle Speed: Testing and Inspection

1. INITIAL CONDITIONS
- Engine at normal operating temperature
- Air cleaner installed
- All pipes and hoses of air induction system connected
- All accessories switched OFF
- All vacuum lines properly connected

HINT:All vacuum hoses for EGR system, etc. should be properly connected.

- MFI system wiring connectors fully plugged
- Ignition timing check correctly
- Transmission in neutral position





2. CONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL
- Connect the TOYOTA hand-held tester or OBD II scan tool to the DLC3.
- Please refer to the TOYOTA hand - held tester or OBD II scan tool operators manual for further details.
3. INSPECT IDLE SPEED
- Race the engine speed at 2,500 rpm for approx. 90 seconds.
- Check the idle speed.

Idle speed: 650 - 750 rpm.

- If the idle speed is not as specified, check the IAC valve, intake air leakage and MFI system.
4. DISCONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL.