On Classic shape only (not Newage) faults can be displayed as pulses of the Check Engine Light. If the Check Engine Light goes out there is no fault. In order to perform diagnostic (and ECU resets) you will need to connect some wires together under your steering column. Note, the following procedure only works for Classic shape Impreza’s, not for Newage. Make sure your ignition is OFF Connect the Black ‘Read Memory’ connectors together as illustrated below. Wh
