Mazda

JE40-18881A

JE40-18881A MAZDA 1989 1990 1991 RX7 ecu ecm

ECM Wiring

ECU ECM

An engine control unit (ECU), now called the powertrain control module (PCM), is a type of electronic control unit that controls a series ofactuators on an internal combustion engine to ensure optimal engine performance.

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