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Franke · 07-23-2013

It appears not to be linear based on your arm positions. Please remember I assumed it may be linear but the FSM doesn't state one way or the other. It just states the voltage will vary with throttle position from .54V to approx 5.0 V WOT. Also, I always use a analog ohm meter to check the ohms from the potentiometer wiper so that I can actually see if there is a dip/spike in the resistance. The problem with digital meters testing pots is that they don't respond fast enough to a very small ohms change and is very dependent on how fast or slow you move the wiper arm. Usually the problem with a defective TPS is a bad spot on the pot just after you go off idle.
I know your TPS is not shorted or open as you would get a code 21 or 22 set.

07-23-2013	#9
Franke Join Date: May 2013 Location: Beaver, PA Posts: 515	Re: TPS response... It appears not to be linear based on your arm positions. Please remember I assumed it may be linear but the FSM doesn't state one way or the other. It just states the voltage will vary with throttle position from .54V to approx 5.0 V WOT. Also, I always use a analog ohm meter to check the ohms from the potentiometer wiper so that I can actually see if there is a dip/spike in the resistance. The problem with digital meters testing pots is that they don't respond fast enough to a very small ohms change and is very dependent on how fast or slow you move the wiper arm. Usually the problem with a defective TPS is a bad spot on the pot just after you go off idle. I know your TPS is not shorted or open as you would get a code 21 or 22 set.