Throttle Position Sensor (G20 Without CTP Switch)

Turn ignition off. disconnect TPS harness connector. Using a DVOM, measure resistance between terminals "A" (Red/Yellow wire) and "B" (White wire) of sensor. Resistance should be approximately 2000 ohms with throttle closed and 10,000 ohms with throttle completely open. If sensor does not respond as indicated, adjust TPS. See ADJUSTMENTS article in the ENGINE PERFORMANCE Section.