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Test Description

The number(s) below refers to the step number on the diagnostic procedures.

  1. 1  - The Diagnostic System Check - Engine Controls prompts the technician to complete some basic checks and store freeze frame data, if applicable. This creates an electronic copy of data taken when fault occurred. Information is then stored in the scan tool for later reference.
  2. 2  - Disconnecting PCM will determine whether malfunction is caused by a short to ground in MIL control circuit or a faulty PCM.

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