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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 93 (Engine Controls - On-Vehicle Adjustments) >> Idle Speed & Mixture >> Idle Speed >> Es300 & SC430

Es300 & SC430

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Lexus SC 430, 2003 Lexus RX 300, 2003 Lexus LX 470, 2003 Lexus LS 430, and 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start and warm engine up to normal operating temperature. Shut engine off.
  2. Connect scan tool to DLC3. See Figure. Use scan tool to read engine RPM.
  3. Apply parking brake. Place transaxle in Neutral. Start engine warm to normal operating temperature, then allow engine to idle. On ES300, ensure idle speed is 550-650 RPM. On SC430, ensure idle speed is 700-800 RPM.
  4. If idle speed is not within specification, check throttle body assembly. See THROTTLE BODY under THROTTLE CONTROLS in appropriate SYSTEM & COMPONENT TESTING article. Shut engine off. Remove scan tool.
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