Throttle Position Sensor: Testing and Inspection

Fig. 34 Checking throttle position sensor.:

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1. Place ignition switch to ``Off' position, then disconnect sensor electrical connector, Fig. 34.
2. Check resistance between terminals 1 and 3. Resistance should be 4 - 6 ohms.
3. Connect suitable tester across terminals 1 and 2 or 2 and 3, and ensure that when throttle valve is slowly operated from idle to fully opened position, resistance changes smoothly. Replace sensor as required.