Acura 35710-SE3-A01 Clutch Switch Assembly (Inhibiter)

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The starter/clutch interlock switch is positioned near the upper end of the clutch pedal, secured to a bracket by two nuts that also allow for adjustment of the switch plunger's position relative to the pedal's stopper. It features two wires: one from the starter relay and another going to ground. When the ignition key is turned to the Start position and the clutch pedal is pressed, the interlock switch closes the starter relay's path to ground, activating the starter motor. If the engine does not crank with the clutch pedal depressed, the switch may need adjustment; if it still fails to turn over, the switch should be checked and possibly replaced. If the engine rotates without the clutch pedal being depressed, adjustment is also necessary. In cases where the engine won't start with the pedal depressed, there may be an issue with voltage from the starter relay to the switch or a lack of continuity between the switch terminals. To diagnose, check the voltage to the switch using a voltmeter or test light; there should be voltage in the wire from the starter relay when the ignition is in the Start position and the clutch pedal is depressed. If voltage is present on both sides of the switch, it is functioning correctly, but if not, the switch may be faulty. For replacement, unplug the electrical connector, loosen the adjustment nut, and unscrew the switch from its mounting bracket, with installation being the reverse of removal. For adjustment, loosen the locknut and turn the switch as needed to ensure continuity when the clutch pedal is depressed.

Continuity indicates that the switch is functioning properly. Lack of continuity with the pedal depressed or continuity when the pedal is released indicates that the switch needs to be replaced.