I started my car after work and I pulled out of the parking lot and onto the road and all of lights came on and my car completely died. I put it in park turned my car off and then turned it back on again and it started right up and drove fine. Now that this has happened twice in the last couple of days so I took my car to Auto Zone and they ran the diagnostic test on it and it says my TCM detected a loss of power during operating conditions. So I know its either an open or short circuit condition, poor electrical connection or a faulty TCM autozone told me all of this. How would I go about finding out exactly what is wrong with it and how do I fix it? Would love to save some money and do it myself.