There are 2 important temp sensors in this problem one is the transmission fluid temp sensor and the other is the engine coolant temp sensor. Your problem sounds like code P0712 trans fluid temp high, and can be caused by either a bad sensor or a gounded wire in the sensor circuit. It can also tie into the ECT(engine coolant temp sensor. Testing is done at the TCM(transmission control module located at the right rear of the engine cmpatment, look for the Blue/Yel stripe and Black/Green stripe wires Use an OHM meter set on 2K and your readings should be as in the resistance table show in pictures below, Note that the ECT has the same color wires, so test the sensor there by removing the plug and checking across the sensor. The ECT is located on top rear of engine in the top hose.
Images (Click to enlarge)
Friday, March 18th, 2011 AT 8:24 PM