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Home >> Subaru >> 2013 >> Legacy Premium, Automatic CVT Trans >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> SUBARU Eyesight System (Driver Assist) (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC B28A1 Adaptive Cc ECM Communication Data Error >> Diagnostic Procedure

Diagnostic Procedure

DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK ECM. 
Check the part number of the ECM.
Is the ECM genuine? Go to step . Replace the ECM.
2 CHECK STEREO CAMERA. 
  1. Remove the camera cover.
  2. Check the part number of the stereo camera.
Is the stereo camera genuine? Go to step . Replace the stereo camera.
3 CHECK LAN SYSTEM. 
Perform the diagnosis for LAN system. < Refer to PROCEDURE , Basic Diagnostic Procedure. >
Is DTC displayed? Perform the diagnosis according to DTC. Go to step .
4 CHECK ECM. 
Perform the diagnosis for the engine. < Refer to BASIC DIAGNOSTIC PROCEDURE . >
Is DTC displayed? Perform the diagnosis according to DTC. Go to step .
5 CHECK CONNECTOR. 
Check the ECM connector and the stereo camera connector.
Is the connector OK? Go to step . Repair or replace the connector.
6 CHECK STEREO CAMERA. 
Read the DTC.
Is another DTC displayed? Perform the diagnosis according to DTC. Go to step .
7 CHECK STEREO CAMERA. 
  1. Clear the memory.
  2. Read the DTC.
Is the same DTC displayed? Replace the stereo camera. < Refer to REMOVAL , Stereo Camera. > Temporary poor contact.