Recent content by 40X80

If not , it is a communication issue between the tcm and pcm . There are flow charts available on here and I strongly recommend testing all components prior to component replacement. That being said, shift solenoid failure if common .

Disconnect the TCM under the driverside and check if it throws a code.

Most frustrating issue i have possibly ever encountered, and I own and operate a automotive repair shop. In my case it is purely an electrical fault yet to have been determined. The factory service manual has errors in the wiring diagram(s) which only complicates diagnosis.

There is a battery tray bit not what i am talking about

No, it is the panel and shifter boot.

Transfer case shifter panel! How much?

Flow chart testing found high resistance in NSS, replaced with oem. Problem persists.. tcm has good power and ground yet it is not registering or rransmitting data. My tcu and ecm tested ok in a different fzj. Tcu still is oblivious to inputs. Even hard faults like a disconnected speed sensor ...

Pull the thermostat from the housing with pliers, clean the surface replace stat and gasket

Heat it up! Then, vise grip it back and forth if you have enough grab on it.

Still have the liftgate??

Still have the tailgate ??

I did check both circuit boards and they were amazingly clean and like new. I have a fsm and a440f manual. Will check continuity on these bastards and report back

The circuit boards looked like new thankfully. I have a A442f rebuild manual and the FSM. More continuity testing coming soon..

Further investigation has now pointed toward shorted/open wires between TCU and ECM. I was able to get a running, driving 93 FZJ and swap my ecm, tcu to it and it drove fine, however upon disconnection of the tcu the test subject exhibited the exact same shifting issues as mine, thus...

Vehicle YMM?