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Throttle Valve Switch (TVS)

  1. Disconnect 3-pin Throttle Position Sensor (TPS) connector located near fuel pressure regulator. With throttle closed, connect an ohmmeter between Black and Brown wires. Ohmmeter should indicate continuity (about zero ohms). Connect ohmmeter between Green and Brown wires. Ohmmeter should indicate infinity.
  2. Open throttle to wide open throttle stop. Connect ohmmeter between Black and Brown wire. Ohmmeter should indicate infinity. Connect ohmmeter between Brown and Green wires. Ohmmeter should indicate continuity (about zero ohms).
  3. Partially open throttle. Connect ohmmeter between Black and Brown wires. Ohmmeter should indicate infinity. Connect ohmmeter between Green and Brown wires. Ohmmeter should indicate infinity. If ohmmeter does not read as described, loosen TVS adjustment screws If ohmmeter does not read properly, loosen TPS adjustment screws. Adjust TPS to obtain proper ohmmeter readings. If ohmmeter readings are unattainable, replace TVS.
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