This tach signal goes to a relay? Just wondering where this might be. Sounds exactly like old Volkswagons....they has a special relay that powered the fuel pump as long as it had a tach signal.
I'm just scratching my head at Toyota for making it so hard to find manuals. Even the parts manual you buy from them has only "reference' part numbers that are useless to you. Toyota is big, but not user friendly!
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