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Throttle Position (TP) Sensor: Es300

  1. Ensure ignition is off. Disconnect electrical connector from Throttle Position (TP) sensor on throttle body. Disconnect vacuum hose and apply vacuum to throttle opener. See Figure.
  2. Using ohmmeter, check resistance between specified terminals in relation to throttle position. With throttle fully closed, between terminals VTA and E2, resistance should be 200-6300 ohms. With throttle fully open, between terminals VAT and E2, resistance should be 2000-10,200 ohms. With throttle fully open, between terminals VC and E2, resistance should be 2500-5900 ohms. See Figure. Replace components as necessary if resistance is not within specification.
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