Civic L4-1590cc 1.6L SOHC (VTEC) (1992)
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Alternator FR Signal: Description and Operation
A/T EFI Signal A & B
These signals are used as a means of communications between the PGM-FI ECU and the A/T ECU so that engine parameters can be adjusted prior to
shifting. This preserves peak fuel efficiency, power generation, and comfort.
