Removal (GS300 & IS300)
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.
- Disconnect negative battery cable. Drain cooling system. Remove intake air resonator. Disconnect accelerator cable from throttle linkage. Disconnect throttle position sensor connector. See Figure. Remove throttle control motor and accelerator pedal position sensor connectors. Remove engine wiring harness clamp from clamp bracket of throttle body.
- Remove throttle body bolts and nuts. Slightly slide throttle body away from intake air connector. DO NOT handle throttle body by throttle motor. Disconnect water by-pass hoses from throttle body and remove throttle body.