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Throttle Valve Switch: Datsun

  1. With engine running at idle, disconnect throttle valve switch connector. Connect ohmmeter leads to terminals 29 and 30 of throttle valve switch.
    NOTE: Do not connect ohmmeter to throttle valve switch wire connector or damage to ohmmeter may result.
  2. With engine operating at idle, 0 ohms should register on ohmmeter. Loosen throttle switch retaining screw and increase engine idle speed to 900 RPM (770 RPM on 200SX). Adjust location of switch so that ohmmeter reading goes from 0 ohms to infinity. If ohmmeter registers correctly, proceed to step  4). If ohmmeter readings are not correct, proceed with next step.
  3. Turn engine OFF and set clearance between throttle valve shaft lever and stopper screw to 0.020" (.5 mm) on 280ZX and 810 or 0.012" (.3 mm) on 200SX. Adjust throttle switch position until ohmmeter reading goes from 0 ohms to infinity. If switch does not perform as described, replace throttle switch.
  4. To check full throttle contact, disconnect negative battery cable and throttle valve switch connector. Connect ohmmeter between terminals 24 and 30. Continuity should not exist when throttle valve is in idle position. Depress accelerator to full throttle position. Continuity should exist between terminals. If not, replace throttle switch.
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