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You keep getting a tp throttle position circuit voltage to low and a tp circuit voltage too high code replaced tp sensor checked voltage at pcm and it all seems to be fine?
Wiki User
∙ 16y ago
Just because you get a good voltage reading at the PCM, and are still getting that OBD II code, doesn't necessarily mean that the TPS is still bad. The Signal wire running from the TPS to the PCM is a straight shot, but the ground wire and the reference wire have a few splices in between the TPS and the PCM. Make sure to check the voltage at all those different spots. If you get a good reading on the voltage at all the different points on those wires, then it could be that you just bought a bad TPS. One way to check, it to take the TPS off, but leave it connected to the wiring harness. With the voltmeter leads on the ground wire and the signal wire, and the key in the ignition and turned to the on position (engine still off), manually manipulate the rotating slot and you should see a nice gradual increase in voltage. If not then that's a bad TPS. Hope this helps.
Wiki User
∙ 16y ago
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