Circuit 391?????
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Circuit 391?????
I am having issues with the O2 heaters firing and a rough shift. All though I have no transmission codes I have found that circuit 391 is the constant 12V+ for the O2 heaters (PCM switch 12V- to activate heaters via CK387) and also powers some if not all of the transmission controls... I have seen in the schematics there is a junction after fuse #7 in the passenger compartment, however I am unable to locate the actual position in the harness. I am brand new top this site, but it seems there are some VERY smart guys on here... Any help would be great!
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