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Originally Posted by shorod
Are you sure it is a 9-pin connector, or might it be a 10-pin? I pulled up the wiring diagram for the transmission in a 2002 Taurus and it shows a 10-pin D-connector, and pin 3 is for the TCC, pin 6 is Shift Solenoid B. Pin 4 is not used, so there are only 9 wires going to the connector, but there are 10 positions in the connector.
If you'd like me to send you a PDF attachment of connector C199, send me a private message with your e-mail address and request.
I don't find anything in the service manual regarding specs for the TFT sensor. I find it mentioned as being an integral part of the transmission control body, but nothing on what resistance/voltage drop to expect for certain temperatures.
-Rod
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My bad, Rod. It is the 10 pin, but only 9 are used. And it is pin 3 I checked. When I looked at the diagram, the TCC solenoid was listed as item 6. Typos on my part. So, any ideas on what to check next as to why the PCM is signaling the TCC to always lock up, except in 1?