Junior Member
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Join Date: Dec 2016
Location: Northern Rockies
Posts: 18
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Junior Member
Join Date: Dec 2016
Location: Northern Rockies
Posts: 18
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dead throttle, dash lights on after trailer plug mis-wire
05 4runner, I have a cargo box on with lights plugged into the trailer plug. I decided to add a flat plug pigtail to the 7 pole round plug so I didnt have to lose the cargo box lights when using a uhaul trailer.
I mistakenly wired the trailer ground to the backup lights position. First thing that happened, the SRS light came on when I backed out of the driveway. A short drive, walk dog in park, start truck, more dash lights come on, the CEL and VSC TRAC came on. I also noticed the fuel mileage, outside temp bank of lights wasnt on and turns didnt work.
Found one 15A fuse blown, replacing it restored the turns outside temp and fuel mileage, but changed nothing else.
Ive searched here for info, disconnecting the battery, neg, then pos, then both, with waiting periods up to 20 mins had no effect.
Looked up various descriptions of a zero reset, but many of the suggested vids had varying info. As close as I recall, flashing the 4 and 14 poles of the diagnostic plug didnt help. I may have missed a step in the procedure, but its been a really long week on low sleep,...
Can someone give me a simple step by step primer on exactly how to do the reset? Some of the previously suggested vids werent really very clear, and they werent all in exact agreement as to every step. One suggested driving in a straight line up to 25 mph was required after reset, but no others said it was required.
Any other ideas on what I may have cooked with my mis-wire or what to check?
Truck starts, and sounds normal-ish, then a second later drops RPMs and has zero throttle response at all, just idles.
Last edited by Malamute; 03-29-2020 at 11:19 PM.
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