it seems u r having a little prob understanding what the guys have been telling u (which has been good info)
the primary set up lower shaft. tps at rear works with throttle cables one to open and one to close.
the secondary set up upper shaft. tps at front operates with an electric motor (between the 1st and 2nd throttle bodies) it is controlled by the ecu. when the ign is first turned on the ecu makes the secondary shaft butterfly sweep 100% and the ecu checks that. if it is off then u get a code.
i just looked at mine it is all covered so the only way is to remove the stuff to hold the butterflies with your finger or something that will keep them open while u install the tps.
i have been told if u have original air plumbing that it is a bear to get back in.
i have been helping a guy on his trans so someone may have already posted the answer.
