2003 durango 4.7L with CEL code P1687
So today after I spent over $500 on parts to fix my truck, I started having more problems with it. I noticed that my rear wiper stopped working. Then I lost all speeds except the 2 fastest on my front wipers. I thought it was the relay but it wasnt. Then my service 4WD light came on. Then the check engine light came on. I took it to autozone to get scanned and it came up with code P1687. Then when the service 4WD came on i would lose all lights on the dash, the power door locks along with keyless would stop working. Then I lost headlights and the interior dome lights stayed on and I could not over ride them with the dimmer switch. I tried looking on both yahoo and google for some answers and did not find much. I am hoping that someone on here has had the same issue(s) that I am having and can help me out. I am a volunteer firefighter and never know when I am going to be called out for an emergency and need to get these issues resolved ASAP.
the battery is only 2 years old deff not more than 3 years old. i had the batt and charging and starting systems checked not to long ago and everything was fine. i went down to the truck this morning and wiggled a few wires made sure that everything was connected and took it out for a test drive and it seemed to be fine. it had good power good pick up from a dead start. also did a couple of dash tests holding in the trip button and let it self test and no codes popped up







