nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Engine Control Module|Testing and Inspection > < Engine Controls - ECM Testing and Notes|Page 2743
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Engine Control Module: Description and Operation

E.C.U. (E.C.C.S. control unit) 

The E.C.U. consists of a microcomputer, inspection lamps, a diagnostic mode selector and connectors for signal input and output, and for power
supply. The unit has control of the following functions.
-

Injected fuel amount

-

Ignition timing

-

Mixture ratio feedback

-

Idle speed

-

Fuel pump operation

-

Mixture heating

-

A.I.V. operation

-

E.G. R. and canister purge operation

E.C.C.S  CONTROL

Engine Control Module|Testing and Inspection > < Engine Controls - ECM Testing and Notes|Page 2743