My driver side power seat, manual tilt (no HVAC) is not functioning. I checked voltage at the switch plug and at the main seat connection and got 6V. The immediate wiring from where it comes out of the floor to the seat looks good, no damaged wires, etc. Fuse 74 in the battery fuse box looks ok, and I measure 12V directly after the fuse. So somewhere in between those two points I would assume I have a damaged wire or corroded connection. However, I dont have a wiring schematic to see how its routed and where those connections are at. Has anyone had a similar issue or could provide the wiring map/schematic leading up to the seat?

One bonus question(s):

When I pulled apart the battery fuse box, I found the wire leading to Fuse 76 (PCM - Voltage Power 1) pinched. I must have managed to do this when I did the Fuel pump fuse relocation. First, is this connection actually used? Looking at it from underneath, albeit difficult, it doesn't seem to have an input/output from the other terminal(No corresponding wire or distribution bar). I dont measure any voltage from either terminal with the truck off, but that isn't to say it isn't switched. Second, if it is used, how can I pull the terminal from the fuse panel to repair the wire? I cant seem to figure out how the locking mechanism works.

 

This is from a 2013 manual. When you test for power did you use the ground in the plug or from the battery negative post? The ground point in this picture is behind the driver side kick panel.

 

2011 should be the same for the seat.

F76 is for many things that make your engine operate (MAF, O2, EVAP, etc). I think if it wasn't working, you would barely be driving, if at all.

And here's part of the routing.

 

I got 6V whether I used the ground pin on the plug or the chassis ground point under the A-pillar/dash (which is what I think you are referring to)

Yea no issues thst would be caused by low voltage to any of those sensors, but I’d like to fix it no the less. Wouldn’t be hard if I knew how to get the terminal free from the casing.

Thank you for the responses. It looks like there are only two connectors upstream of the switch, one of those being the main seat plug that I already checked. Ill take a look at the other one and report my findings.

 

Did a little more testing and isolated the circuit break to inside the cab (from C212). Now I I have to start pulling trim apart.

On a second note, while I was poking around, I found this under my dash. Anyone have an idea of what this is? I’ve known the button was there but never traced it back.

Edit: Turns out it’s part of a KARR aftermarket alarm. There’s a place in hell for whoever installed it…

 

Looks like whoever did there wiring in here nicked the power wire and it corroded over time. This was under the driver door sill plate (I cut it already in this picture). Anyway all working now