I have a 2006 that keeps setting a p0659 I cleaned and greased 20 pin connector no difference... I tested the voltage at tcm and at the 20 pic connector both showing 12 volts. I see that it should be 6 volts, any suggestions? Thanks
Help p0659
- Thread starter Bbuchanan11
- Start date
We cut the wire a few inches for the tcm and it still showed 12 volts at the cut it was dead at the 20 pin... truck drive fine until cel comes on then it's stuck in one gear... should I try a valve body wiring harness or tcm?
I even took about a foot of conduit off from the 20 pin checked all wires took the inner fenderwell out and checked a couple of feet all wires are good.
Check grounds as well for TCM. Also look at schematic and test each circuit for possibly being shorted together. Also I'd test all power circuits to TCM as well. Especially if you come to conclusion that high side driver internal to TCM is shorted. And when testing power and ground circuits I like to do loaded voltage drop.
Bump... found a wire starting to rub through on the inner fenderwell cut out the bad section still didn't fix it... I'm thinking I might try a tcm.. any other suggestions? I'm trying to get it fixed so I can make ts this week.
Well for anyone that runs in to this problem and can't find any shorts in wiring a new tcm fixed my problem.