Idle Speed: Testing and Inspection

IDLE SPEED INSPECTION
1. INITIAL CONDITIONS:
(a) Engine at normal operating temperature
(b) Air cleaner installed
(c) All pipes and hoses of air induction system connected
(d) All accessories switched OFF
(e) All vacuum hoses for EGR system, etc., properly connected
(f) SFI system wiring connectors fully plugged
(g) Ignition timing set correctly
(h) Transmission in neutral position
(i) Air conditioning switched OFF

2. CONNECT LEXUS HAND-HELD TESTER OR OBD II SCAN TOOL.
3. INSPECT IDLE SPEED.
- Race the engine speed at 2,500 rpm for approx. 90 seconds.
- Check the idle speed.

Idle speed: 650 ± 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 OBD II SCAN TOOL.