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Home >> Subaru >> 2014 >> BRZ Limited, Automatic Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle (Diagnostics) >> Automatic Transmission System >> DTC U0100 Lost Communication With ECM/PCM "A"; DTC U0122 Lost Communication With Vehicle Dynamics Control Module; DTC U0140 Lost Communication With Body Control Module; DTC U0155 Lost Communication With Instrument Panel Cluster (IPC) Control Module >> Inspection steps

Inspection steps

  1. Read the diagnostic code
    1. Connect the SSM3 to the DLC3.
    2. Turn the ignition switch to ON.
    3. Read diagnostic cords according to SSM3 display. (Refer to CHECKING/CLEARING DIAGNOSTIC CODES  )
      RESULT

      Result Go to
      P160A is not output at the same time. A
      P160A is output at the same time. B

      B: P160A (refer to DTC P160A RAM ERROR  )

      A: Go to Next Step

  2. Read the diagnostic code
    1. Connect the SSM3 to the DLC3.
    2. Turn the ignition switch to ON.
    3. Read diagnostic cords according to SSM3 display. (Refer to CHECKING/CLEARING DIAGNOSTIC CODES  )

      Next: CAN communication system (refer to HOW TO TROUBLESHOOT )

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