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Home >> Subaru >> 2016 >> WRX STI >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Security And Locks - Keyless Access (W-Push Button Start) (Diagnostics) >> Inspection Mode >> Procedure >> Inspection Mode 1

Inspection Mode 1

DTC Item Note
U0073 Control Module Communication Bus Off -
U0100 Lost Communication With ECM/PCM "A" -
U0101 Lost Communication With TCM -
U0122 Lost Communication With Vehicle Dynamics Control Module -
U0140 Lost Communication With Body Control Module -
U0155 Lost Communication With Instrument Panel Cluster (IPC) Control Module -
U0401 Invalid Data Received From ECM/PCM "A" -
U0422 Invalid Data Received From Body Control Module -
B2271 IGN Relay Control Circuit -
B2274 ACC Relay Control Circuit -
B2275 Engine Start Request Control Circuit -
B2276 ACC Relay Off Signal -
B2277 Submerging Circuit -
B2285 Steering Lock Position Signal Correlation -
B2286 Engine Speed Signal(Without Auto Start Stop) -
B2781 Steering Lock Cm Control Circuit -
B2782 Steering Lock Drive Request Signal Correlation -
B2785 LIN Communication -
B2786 Steering Lock Cm Communication -
B2788 IGN Signal Correlation (Steering Lock CM (Control Module)) -
B2789 ID Code Box Communication -
B278D ID Code Box Judgment Circuit -

Diagnostic procedure:

  1. Prepare for the inspection mode. < Ref. to PREPARATION FOR THE INSPECTION MODE , PROCEDURE, Inspection Mode. >
  2. Start the engine, and let it idle for 40 seconds or more.
  3. Read the DTC and check that the DTC is not displayed. < Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) . >
    NOTE: If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis according to DTC.