Throttle Position Sensor: Testing and Inspection

On-Vehicle Inspection
1. Warm up engine and stop it when its temperature has reached normal operating temperature (Check to make sure that they have some clearance between fast idle cam and cam follow lever.).
2. Disconnect negative cable at battery and coupler from TP sensor.




3. Using ohmmeter, check resistance between terminals under each condition given below. If check result is not satisfactory, replace TP sensor.

TP sensor resistance
Between 1 and 3 terminals: 4 - 6 kOhm
Between 2 and 3 terminals: 0 - 4.6 kOhm (varying linearly according to throttle valve opening)

4. Connect TP sensor coupler securely.
5. Connect negative cable to battery.