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Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK MULTIPLEX COMMUNICATION SYSTEM 
    1. Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally.

      Result 

      RESULT REFERENCE

      Result Proceed to
      MPX DTC is not output A
      MPX DTC is output B

    B: GO TO MULTIPLEX COMMUNICATION SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

    A: REPLACE AFS ECU  (See AFS ECU  )

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