Reassembly (GS430, LS430 & SC430)
WARNING: This page does not describe the selected car, but rather 8 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.
- To install TP sensor, ensure throttle valve opening on throttle body is 4 degrees or less. Install sensor on throttle body so it is at position No. 1 (15 degrees). See Fig 1.
- Rotate TP sensor clockwise to position No. 2 until it contacts throttle valve. See Fig 1. Install and tighten retaining screws to specification. See TORQUE SPECIFICATIONS .
- To check TP sensor operation after installation on throttle body, install electrical connector on TP sensor. Connect scan tool to Data Link Connector (DLC) No. 3 under left side of instrument panel.
- Turn ignition on. DO NOT depress accelerator pedal after ignition is turned on. Using scan tool, check that THROTTLE POS of the CURRENT DATA is 14.4-16.0 percent. If reading is not as specified, loosen and rotate TP sensor until reading is within middle of specified range. Retighten screws.