Mitsubishi Workshop Service and Repair Manuals > Lancer Evolution L4-2.0L Turbo (4B11T/C) (2010) > Powertrain Management | Computers and Control Systems | Information Bus | Component Information | Testing and Inspection | Reading and Clearing Diagnostic Trouble Codes

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2. Connect scan tool MB991958 to the data link connector
3. Turn the ignition switch to the "ON" position.

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