Hi! I’ve searched but couldn’t find anything applicable to my problem. I have a 2006 EB expedition, and I recently had the rear end rebuilt in a local shop. When I got it back, the 4x4 wouldn’t work, so I replaced the transfer case shift motor. Turns out that wasn’t the issue. I have checked the wiring, I can manually engage the transfer case with the motor removed, i have checked the fuses, I have checked the selector switch resistance, and I have checked the relays behind the driver’s side headlight. When I try to engage 4hi or 4 lo, I don’t get any voltage to the shift relays behind the headlight. Is my pcm fried? How can I test it? Anything else I should be checking? Thank you so much for your help, I am stumped..