Celica Liftback L4-107.5 1762cc 1.8L DOHC (7A-FE) (1995)
Data Link Connector: Description and Operation
DESCRIPTION
The data link connector is used to trigger the self diagnostic capabilities of the engine control module (ECM) as well as allow tachometer hookup
and other selected functions.
OPERATION
By connecting the data link connector terminals as described in Testing and Inspection, it is possible to control fuel pump operation, access the
ignition signal for tachometer hookup, and several other functions including access of any data trouble codes stored in the ECM.