Throttle Position Sensor: Testing and Inspection

Fig. 10 Checker lamp.:

1. Adjust throttle sensor as follows:
a. Warm up engine until it reaches normal operating temperature, then turn engine off.
b. Connect checker lamp 49 F018 001 or equivalent to green check connector Fig. 10..
c. Turn ignition switch on and observe lamps.

Fig. 11 Adjusting throttle senso.r:

d. If both or neither lamp illuminate(s), turn throttle sensor adjusting screw until one lamp is illuminated. If both lamps are illuminated, turn adjusting screw counterclockwise. If neither lamp illuminates, turn adjusting screw clockwise Fig. 11..
e. Install cap on adjusting screw.

Fig. 75 Testing throttle sensor. Non-turbocharged models:

TESTING W/OHMMETER
2. Disconnect throttle sensor connector.
3. Connect circuit tester to sensor, Fig. 75.
4. Open throttle valve and observe sensor resistance. Resistance between terminals A and B should be approximately 1000 ohms at idle and approximately 4000---6000 ohms with throttle valve fully open. On 1987---88 models, resistance between terminals A and C should be approximately 4000---6000 ohms with throttle valve either fully open or in idle position.