Chrysler Repair: Code 15 in a 92: is limp-in due to sensor or shift?, inner fender, wire colors

Question
so would the code 15 piut me into limp mode, when i run the car up the street 2 seconds driving it slams into 2nd gear, would this be a sensor proble or a shift problem?

Answer
Hi Russell,
It depends upon whether the 15 code was readout via the ignition switch or by using a DRB at the black diagnostic connector in the engine compartment (either of which only read the engine controller and which means that the vehicle distance sensor signal is missing, and should be accompanied by a loss of speedo function but NOT cause a limp-in mode of the trans because the trans has a separate output speed sensor of its own) OR whether the 15 code was readout at the body bus blue diagnostic connector under the dash using a DRB (that reads out the trans controller and which means that the trans relay located on the right side inner fender shield has its points stuck open). So tell me where and how the you got the code 15. If it is indeed a trans controller readout, then yes if the trans relay has its points locked open it will cause exactly what you are experiencing. I would then try replacing the trans relay or if you want to avoid an unnecessary part replacement cost right off the top, then I would check the wiring to the actuating coil of the relay, and the wiring to the relay points (both in and out), and the 40-way connector to the trans controller (pins 15,16 and 17) and if all that checks out and the relay checks out, then the trans controller is failing.*
So let me know which port you got the 15 code from. If it came out of the engine controller, then you should ignore that and instead readout the body bus connector to see what code you get from it becasue that is the one that will explain your limp-in mode that the trans is exhibiting.
Roland
*Let me know if you want to do that wire tracing and whether you have a volt-ohmmeter to do the testing and I can tell you wire colors/pin assignments to do the testing.