Throttle Angle Sensor
Unplug throttle angle sensor connector. Measure resistance between Yellow/White and Green/White terminals on Prelude. On CRX Si models, measure resistance at Yellow/Red and Brown/Black terminals at sensor. Resistance should be 4000-6000 ohms on Prelude or 3200-7200 ohms on all other models. If resistance is outside specified range, adjust installation position of sensor and retest. Replace sensor if necessary.