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Throttle Valve Switch (TVS)

  1. Disconnect 3-pin Throttle Valve Switch (TVS) connector located near fuel pressure regulator. With throttle completely closed, connect 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 wires. 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. Adjust TVS to obtain proper ohmmeter readings. If ohmmeter readings are unobtainable, replace TVS.
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