Quote:
Originally Posted by GR8 WHITE
Rocket, if perhaps you are correct, where is this Throttle Position Sensor? Is it the small connector on the on the passenger side on the Throttle Body itself that has 6 wires going into the TB?
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If you look at the TB, you'll see it has two attachments on either side of the throttle plate pivot. One is fairly large, it looks like an electric motor, which is in fact exactly what it is. The "Throttle Actuator Control" is a servo motor, which the PCM uses in order to rotate the throttle plate. On the other side is a short black plastic wart, that houses both TP Sensor 1 and TP Sensor 2. You have codes for both sensors, which is an even better indication that the issue is common to both, which would be the case if you got water inside the plastic enclosure. The trusty service manual says this:
The throttle body for the TAC system is similar to a conventional throttle body with some exceptions. One exception is the use of a motor to control the throttle position (TP) instead of a mechanical cable. The other exception is the new design TP sensor. The TP sensor mounts on the side of the throttle body opposite the throttle actuator motor. The TP sensor is actually 2 individual TP sensors within 1 housing. Separate low reference and 5-volt reference circuits are used in order to connect the TP sensors and the TAC module. The TP sensor 1 signal voltage increases at the same time that the throttle opens. The voltage increases, from approximately 1 volt at 0 throttle to above 3.5 volts at 100 percent throttle. TP sensor 2 signal voltage decreases at the same time that the throttle is opened. The voltage increases from approximately 3.8 volts at 0 throttle to below 1 volt at 100 percent throttle.
