I have a 2002 grand caravan se automatic transmission roughly 130,000 miles and I’m having problems with it starting. I’m starting to think my pcm has finally went out but don’t know for sure. The vehicle was driving fine then on my way home one day the accelerator threw itself to the floor so I hit the brake and the whole vehicle shut off and now won’t start. I hear the fuel pump engage and the starter relay click but it’s not trying to turn over. It’s got 1 code in it P1684 so that’s why I think it’s the PCM. I’ve tested my battery and it’s good and I’ve replaced the throttle position sensor to see if that was the issue. Any help would be greatly appreciated.

 

P1684 Means the tcm was disconnected from power..... which seems kinda strange.

The accelerator going to the floor would make me REAL nervous..... Though I don't know why it would do that. Moving this to the caravan section for ya.

 

Thank you this is my first forum so I’m still trying to figure out the different threads. And it did make me very nervous. As far as the TCM goes what should I look for to tell if it has gone out?