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When you unplug the TPS, there will be three pins showing, they count from the bottom up.
Key on, there should be 5V at pin #1 in the harness plug.
Between pins #2 and #3 on the sensor, you should have 4k Ohms that should smoothly decline to 2 k Ohms as you open the throttle.
I notice that the Bentley manual does not give specifications for the TPS on the OBD II models. They just say to replace it if the computer says it is bad. Trusting an OBD II computer to correctly diagnose an engine problem?? What planet are these guys from?
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