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Home >> Suzuki >> 1994 >> Samurai >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments >> Throttle Position Sensor (TPS) >> TPS Adjustment
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TPS Adjustment

  1. Disconnect TPS harness connector and throttle opener vacuum hose. Using hand vacuum pump, apply 20 in. Hg vacuum to throttle opener to move throttle lever to idle position. Insert .012" (.30 mm) shim thickness gauge between throttle lever and throttle stop screw. See Figure .
  2. Connect ohmmeter between terminals "C" and "D" of TPS connector. See Fig 1 . Loosen TPS mounting bolts, and turn TPS fully clockwise. Turn TPS counterclockwise slowly to find position ohmmeter reading changes from infinity to zero ohms. Tighten TPS mounting bolts at that position.
    Fig 1: Identifying Throttle Position Sensor (TPS) Terminals
    G119572Courtesy of SUZUKI OF AMERICA CORP.
  3. Ensure continuity does not exist between terminals "C" and "D" when .016" (0.40 mm) shim thickness gauge is inserted between throttle lever and throttle stop screw.
  4. Ensure continuity exists between terminals "C" and "D" when .008" (0.20 mm) shim thickness gauge is inserted between throttle lever and throttle stop screw.
  5. If continuity is not as specified in steps 3) and 4), TPS zero adjustment is incorrect. Start adjustment sequence again. If results are the same after readjusting, replace TPS. After final adjustment is completed, reconnect TPS connector and vacuum hose to throttle opener.
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