Sub-Throttle Position Sensor
Disconnect sub-throttle position sensor connector. Check resistance between sensor terminals No. 1 and 3. Resistance should change smoothly from 340-6300 ohms (throttle closed) to 2400-10,800 ohms (throttle open). Check resistance between sensor terminals No. 1 and 2. Resistance should be less than 500 ohms (throttle closed) to more than one megohm (throttle open). Replace sensor if resistance is not as specified.