Those instructions are how to adjust the TPS.
You would also use them when replacing a faulty TPS with a replacement.
You need to unplug the TPS from the loom and remove it from the throttle bodies, you will see 3 pins, you need a multi meter set to ohms so you can see what reading it gives you between the two outer pins from memory, it's been some time since I last tested one...
I don't have one to hand but It looks like you have a manual, it should give you the correct readings and how to test it
Inside a TPS is a ceramic disc that moves when you turn your throttle, these can sometimes crack and wear out sending false readings to your ECU . This can result in bad idling and random running issues.