Throttle Position Sensor: Testing and Inspection

Fig. 34 TPS test. 1985-86:

1. Disconnect electrical connector from TPS with ignition off.
2. Measure resistance between connector terminals 1 and 3, Fig. 34. Ohmmeter should indicate 4000-6000 ohms.
3. Connect ohmmeter between terminals 1 and 2 or 2 and 3, Fig. 34, and ensure resistance changes smoothly when throttle valve is slowly operated from idle to fully opened position.