I covered this here
https://www.fjrforum.com/forum//index.php/topic/173145-adjusting-throttle-position-sensor/https://www.fjrforum.com/forum//index.php/topic/173145-adjusting-throttle-position-sensor/
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I just cleaned mine with contact cleaner, give it a good spray and rotate it through its full motion a couple of times. Did mine again recently. seems to go for about 20,000 miles.
See here
https://www.fjrforum.com/forum//index.php/topic/173145-adjusting-throttle-position-sensor/https://www.fjrforum.com/forum//index.php/topic/173145-adjusting-throttle-position-sensor/
Don't overlook the TPS I have a thread on it somewhere. Easy and quick job.
https://www.fjrforum.com/forum//index.php/topic/173145-adjusting-throttle-position-sensor/?hl=%2Bthrottle+%2Bposition+%2Bsensor