A week ago, my 4Runner started dieing while driving. When it died, the headlights would get dim, the stereo would cut out, and the gauges would jump all over the place. I jumped the the terminals from the computer to check for a code, and it gave me a code 14. I checked my Haynes manual and called my local Toyota dealer, and both told me it has to do with the ignition.
I had replaced the igniter, ignition coil, and the ECU. I stripped most of the harness to check the wiring, and the wires seemed fine. No burns, melting, or anything. The terminals in the connectors were clean, and had no signs of heat damage either.
For about three days, it ran perfectly. Then it started doing the exact same thing. I checked for codes again, and again it gave me a code 14. Is there anything elseI should check? Is there something else triggering this code? I ran out of ideas what it could be.
Ok... I took my 4Runner to the dealer to get them to diagnose the problem. Apparently two ground wires broken. One of them connects to the negative battery cable, but it has not been connected since I bought the truck over a year ago. The other was a ground to the block. Both are now connected and the truck is running fine. I take that back. The truck is running great!! The dealer was wanting to charge me $166 dollars to repair the two wires, plus $500 to adjust the timing because supposedly the timing belt was "half a tooth off". I only paid for the diagnostics and did the repairs at home. Except for the timing, because my brother-in-law and I checked it, and it was/is dead on.
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