Throttle Position Sensor
- Turn ignition switch to "OFF" position. Disconnect Throttle Position Sensor (TPS) connector. Check resistance across poles No. 1 and 2. Total resistance should measure 4 to 6 ohms.
- Attach circuit tester to pole 3 and poles 1 and 2 individually. See Figure . As the throttle valve is slowly operated from closed to wide open throttle, watch meter. Ohmmeter should show a smooth transition of resistance value.