mitsubishi Workshop Repair Guides

Mitsubishi Workshop Service and Repair Manuals

ABOUT US
Engine Control Module|Testing and Inspection > < Engine Controls - Never Use a Test Light To Check an ECM|Page 2254

Mirage L4-1597cc 1.6L DOHC (1990)

Page 1
background image

Engine Control Module: Description and Operation

Electronic Control Unit (ECU) Location

The Electronic Control Unit (ECU), located above the R.H. kick panel, consists of an 8-bit microprocessor, random access memory (RAM), read
only memory (ROM) and Input/Output (I/0) interface. It controls the fuel injection, ignition system and the idle speed system. The ECU is also
able to perform self-diagnostic procedures and provide back-up functions if certain circuits fail.

Engine Control Module|Testing and Inspection > < Engine Controls - Never Use a Test Light To Check an ECM|Page 2254