Disassembly & Reassembly
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tundra, 2002 Toyota Tacoma, 2002 Toyota Sienna, 2002 Toyota Sequoia, and 2002 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
- If necessary to remove Throttle Position (TP) sensor, remove TP sensor retaining screws and TP sensor from throttle body. Manufacturer does not provide information for servicing of throttle control motor.
- To install TP sensor, ensure throttle valve opening on throttle body is about 7 degrees. Install TP sensor on throttle body so it is at position No. 1 (20-30 degrees) and loosely install TP sensor retaining screws. See Fig 1. Rotate TP sensor counterclockwise to position No. 2 until it contacts throttle valve and slightly tighten TP sensor retaining screws. See Fig 1.
- To check TP sensor adjustment after installation on throttle body, install electrical connector on TP sensor. Connect Toyota hand-held tester or scan tool to data link connector No. 3 at driver's side of instrument panel. See Fig 2. Turn ignition on. DO NOT depress accelerator pedal after turning ignition on when adjusting TP sensor.
- Using hand-held tester or scan tool, read the throttle valve opening which is displayed as a percentage. Throttle valve opening may be read by accessing THROTTLE POS under CURRENT DATA on hand-held tester or scan tool.
- While reading throttle valve opening, rotate TP sensor clockwise and counterclockwise until throttle valve opening is 17.6 percent, as this is the center of the standard throttle valve opening of 16.8-18.4 percent. Tighten TP sensor retaining screws to specification. See TORQUE SPECIFICATIONS . Recheck throttle valve opening reading after tightening TP sensor retaining screws, as this may cause the throttle valve opening to change. Ensure throttle valve opening remains at 17.6 percent after TP sensor retaining screws are tightened. Readjust TP sensor if necessary.
- Ensure throttle valve on throttle body is fully closed. Using hand-held tester or scan tool, read the throttle valve opening again. With throttle valve fully closed, throttle valve opening should be 10-14 percent.
- If throttle valve opening is not within specification with throttle valve fully closed, repeat steps 3 through 6 until correct throttle valve opening is obtained. Turn ignition off. Remove hand-held tester or scan tool. Disconnect electrical connector at TP sensor.