Throttle Body: Removal
WARNING: This page is about a different car, the 1997 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect negative battery cable. Drain cooling system. Disconnect throttle cable(s) from throttle linkage. Disconnect vacuum hoses and electrical connectors as necessary. Disconnect coolant by-pass hoses. Disconnect emission control vacuum hoses from throttle body. Remove nuts, bolts, throttle body and gasket.