Engine/Transmission (1998.5 - 2002) Tps Testing

[Pinion Twister]

Wondeing which wire you check the voltage on, and what it should be exactly? (think it's 4 to 5v)

 

[wtrenholm]

APPS sensor used 6 wires, three for the actual pedal position and 3 for idle validation switches.



For the pedal position: (Test with key on)



DB/WT is the 5V supply for the sensor

Should be 5V



BK/YL is the sensor ground

Should be very low voltage drop, put black meter lead on batt negative and red meter lead on sensor ground.



LB/BK is the sensor return and will votlage will vary with pedal

Mine is (using a scan tool)

idle = . 42V

WOT = 3. 61v



At . 52V the DRB read 1% open and at 3. 40 was 100%. Your truck may have slightly different values as it should be based on what your minimum APPS voltage is. If I remember right, it's typically 3V above min V for 100%. (Which is real close on my truck).



HTH

Wayne

 

[Pinion Twister]

THANKS! I will give it a try