Hey everyone. Reaching out here to see if someone could possibly help save me some time in troubleshooting my wife's Grand Vitara. About the Vehicle:
2007 Grand Vitara Luxury (V6), auto transmission, 2WD, sitting at a little over 100k miles.
The wife and I noticed that while driving at low speeds (i.e. less than 40 or so MPH), that the car would spend more time in lower gears than normal. "No biggie" I thought to myself, its about that time where it needs the tranny fluid swapped out, so I'll just make a mental note to do that soon. Well, then yesterday happened
I got a call from the misses stating that while she was driving on the interstate, the tach was sitting at around 4k, and she was driving somewhere around 50Mph. She also stated that the ESP light was on. After a minute or two of talking, the car finally shifted into the last gear, and of course, the rpms dropped. Later on that day, the service/check engine light came on as well. So I plugged my OBDII scanner in and read the code, P0707:
Trouble Code: P0707
A/T Transmission Range Sensor Circuit Low Input
A/T select cable is improperly adjusted or it is damaged
A/T transmission range switch is maladjusted or damaged
A/T transmission range switch signal circuit is open or shorted
TCM has failed
So I cleared it (it had been logged twice, so I had little faith that it would stay gone), and within a few minutes of driving the light came back on. Another thing that may be worth noting is that the ESP light didn't come back on immediately after restarting the car, its as if it take a minute or two, or a bit of driving for it to come back on.
So, given the time of year, and the weather (don't have a convenient workshop, well... not yet) I called the stealership who reported to me that they would need to "put it on their machine with their software" in order to pinpoint what is wrong. The dealership stated that to look at the car it would cost $50, and that would go toward the cost to repair the car.
Anyways, if someone could point me in the right direction to fix this thing myself, that is certainly what I would prefer to do. I'm not one to simply replace parts on a car unless I can test whether or not its actually bad. It seems to me that the problem could possibly be the transmission speed sensor or transmission range sensor. But I don't know of a way to validate what be be at fault here. What could cause the P0707 and the ESP lights at the same time?