Throttle Position (TP) Sensor On-Vehicle Inspection
1) Disconnect negative cable at battery and connector from TP sensor.
2) Using ohmmeter, check resistance between terminals under each condition given in table below.
If check result is not satisfactory, replace TP sensor.
TP sensor resistance
Between terminals “1” and “3”: 4.0 – 6.0 kΩ
Between terminals “2” and “3”: 20 Ω – 6.0 kΩ, varying according to throttle valve opening
There should be more than 2 kΩ resistance difference between when throttle valve is at idle position and when it is fully open.
1. Reference voltage terminal 3. Ground terminal
2. Output voltage terminal    
3) Connect TP sensor connector securely.
4) Connect negative cable to battery.