yes its a 97 manual diesel, followed the procedures from the owners manual and it does nothing but does not display anything on the dash ie engine disabled or key lock out its only in the engine ecu itselfIs yours a manual? The sidelight warning light should illuminate each time the key is turned when entering the eka code if it does then the input is being sent to the BECM.are you entering the eka correctly?I believe @DanClarke did a guide.