Quote:
Originally Posted by Dramg80
I tried the check all fuses and did what you guys told me but still the same, and also door lock don't work anymore and I don't know why there is no communication on the obd2 port to scanner
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Hi Dramg80,
If it were my 4R, I'd check the fusebox once again! I know that because I had the
EXACT same issue as you're having e.g., instrument cluster lit-up like Chinese New Years (ALL unrelated systems warnings), lost the Tach-o-meter and Speed-o-meter together, cluster back-lighting went out at night...etc!
You've lost the power source to the
Main body ECU; which has command over 26 other ECU's on the limited, and 27 ECU's on the Trail (depending on the option pkg)!
Quote:
"Should I take it to the dealership to see if their scanner works"
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Their scanner won't work either! And if you take it back to the dealership, plan to be w/o your truck (possibly) for more than a week while they discuss the symptoms, call their
Regional "Specialist" Rep and have him/her fly out to assess the trouble and decide what to do about your truck, but will just start changing parts in HOPE of finding the problem; ask me how I know...(lol!)
Here's a wiring diagram to help you locate the power supplies to the ECU's:
I've marked the above diagram with a high-lighter pen in PINK; ECU-B 10A fuse, the ECU'S to-do list, and the "Short-pin" location!...you can ignore the door-locks circle marker; that was for another member last week, but the print represents your vehicle! You'll find the power loss, just dig in! Let us know how you make out,
'Best to you',
rig