Help with TPS (Throttle Position Sensor) Replacement and Adjustment 2001LC (1 Viewer)

[ffpmsam]

Hi all, I have a 2001 Toyota Landcruiser I am currently replacing the TPS (Throttle Position Sensor) (Part # 89452-30140). Reason for replacement is due to some sporadic throttle hesitation, VSC/Trac light issue with vehicle shutting off as others have posted, and I replaced the APPS last year with no change in any of my symptoms.

I have referenced this thread TPS/APPS problems - https://forum.ih8mud.com/threads/tps-apps-problems.127474/
as well as this: TPS setup with Scangauge? - https://forum.ih8mud.com/threads/tps-setup-with-scangauge.442228/#post6163458


Regardless, I am currently in the middle of this project and need some guidance. I have searched to no avail and see no good write up on the replacement and adjustment on a 2001 Landcruiser.

Here is where I am at:
Replaced with Part # 89452-30140. I have the old TPS removed and the new TPS connected. I placed the TPS in and secured according to the FSM I will post below. Mechanically everything is inserted back as it was, however I am trying to follow the ODB TP% value instructions, and am stuck where to go next. FSM states TP% under ODP2 should be between 14.4% and 16%. My Carlyle ODB2 scanner will only either read .4 or .8 regardless of how I adjust the TPS. Any guidance greatly appreciated. Do I need a different scanner to get a true reading?

 

[ffpmsam]

Attached is the FSM for replacing and testing the TPS Sensor.

 

[ffpmsam]

Attached old vs new TPS sensor. TPS Sensor mounts forward and to the left of the second picture. As it rotates I can feel it in the right spot as more or less tension is held on the inside of the TPS. As stated previously I am wondering If I do not have the right ODB2 scanner for the job? I can get the TP% value to change on the ODB2 Scanner, however only from .4 to .8 as stated. Would a different ODB2 sensor allow me to see the 14.4%-16%?

Second question, step 4 of the throttle position replacement sensor section in the FSM states: "Set the sensor at the center value of the standard value, and then tighten the screws"

I feel like this is taking me back to a high school math problem. Could the center value of the standard value be interpreted as .8? (16%-14.4% = .16, center of .16 is .8.) Or am I wildly overthinking this

 

[ffpmsam]

Also very useful online FSM link: LC100 Factory Service Manual - https://lc100e.github.io/

 

[ffpmsam]

Update: I borrowed a Bluedriver scanner that connects via bluetooth and has an app to try and trouble shoot this. When I connected and selected TP% I am again getting an alternation of .4-.8. I can't get any other numbers to be read no matter how far I adjust the TPS sensor. Any ideas here?

I'm not ruling out still needing a heavier duty OBD2 scanner, however I want to believe that I should be getting at least a different range of numbers. Confirming with two scanners means to me something is wonky with the TPS Sensor.

 

[ffpmsam]

Update: I removed the TPS sensor, replaced it, and boom I was able to see the numbers I was looking for. Set the number at 15.3, truck fired up. Hoping it solves these hesitation and random dying issues.