My truck set the same dtc in the body control module but I don’t believe the other module set a code but I’d have to double check. The fact that the code description says circuit short to open makes me thinks it’s missing a necessary wire somewhere to complete the circuit.I noticed that after the unsuccessful attempt, two DTCs were thrown: one in BdyCM and one in GFM3 (whatever that is). The one in BdyCM is related to the bed lamp output and is detecting what I'm assuming is an open circuit. See below...
I wonder if it's as simple as a missing fuse. There's a bunch of fuses related to trailer lighting. I'll take a look at the fuse boxes and see what's there.
Thanks. Looks like we can do some continuity checks following that diagram. Do you know what pins 1-5 on the left are?Found this wiring diagram but unless I'm reading it wrong it just looked like the BCM controls the power to the bed lamp circuit.
Will this work on a lariat with just the Forscan changes?My XLT didn’t come with bed lights which is ridiculous so I decided to research and install them myself. I know I could tap in with a cheap led light strip but I like oem even if it costs more.
I bought the below parts through tasca which was the cheapest I could find.
I pried the bed light covers off and fed the wiring in and down the side of the bed. You can use a screwdriver or trim removal tool. You can reach your hand in to feed the lamp switch and led in the correct spots.
Once underneath you’ll see a dummy plug end on each side of the bumper. These will also need to be removed.
Driver Side
Passenger Side
Once removed the plugs look like this.
Connect both sets of plugs into their respective mating plugs. There is one location to push the wiring Christmas tree in on the driver side and two on the passenger side.
Once assembled you’ll need to open up Forscan and go into the BdyCM module, not the as built, and enable the below options.
Once enabled you now have working bed lights.Enjoy!
