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.

- SFI system wiring connectors fully plugged
- Ignition timing set correctly
- Transmission in neutral position
- Air conditioning switched OFF
2. CONNECT LEXUS HAND-HELD TESTER OR OBDII SCAN TOOL.


3. INSPECT IDLE SPEED.
- Race the engine speed at 2,500 rpm for approx. 90 seconds.
- Check the idle speed.

Idle speed: 700 ± 50 rpm

- If the idle speed is not as specified, check the IAC valve and air intake system.
4. DISCONNECT LEXUS HAND-HELD TESTER OR OBDII SCAN TOOL.