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The chart doesn't mention the MAF power relay. Or how to troubleshoot it.
It also says "No code 12" on the lower left side, which probably ought to be "No code 34".
On the 1985 MAF diagram the block labeled "MAF BURN OFF RELAY" could be more accuratly labelled "MAF BURNOFF MODULE" -- it has both power and burnoff functions -- and some electronic circuitry inside.