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Home >> Subaru >> 2020 >> BRZ tS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (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

WARNING: This page is about a different variant/trim than selected.
  1. Read the diagnostic code
    1. Connect the SSM4 to the DLC3.
    2. Turn the ignition switch to ON.
    3. Read diagnostic codes according to SSM4 display. (Refer to CHECK LIST FOR INTERVIEW  )
    RESULT DESCRIPTION

    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 SSM4 to the DLC3.
    2. Turn the ignition switch to ON.
    3. Read diagnostic codes according to SSM4 display. (Refer to CHECK LIST FOR INTERVIEW  )

    To CAN communication system (Refer to HOW TO TROUBLESHOOT )

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