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Basic Diagnostic Procedure: Procedure

CAUTION:

Remove foreign matter (dust, water, oil etc.) from the VDC Control Module & H/U connector during removal and installation. 

  1. CHECK PRE-INSPECTION  .
    1. Ask the customer when and how the trouble occurred using the Check List for Interview. Ref. to BRAKE CONTROL (DIAGNOSTICS)>CHECK LIST FOR INTERVIEW 
    2. Before performing diagnostics, check the component which might affect VDC or parking brake system problems. Ref. to BRAKE CONTROL (DIAGNOSTICS)>GENERAL DESCRIPTION>INSPECTION 

    Is the check result OK?

    Yes  : Go to  2.

    No  : Repair or replace each component.

  2. CHECK INDICATION OF DTC  .
    1. Turn the ignition switch to ON.
    2. Read the DTC of [Brake Control] using the Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) 
      NOTE:

      If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. Ref. to  BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE FOR SUBARU SELECT MONITOR COMMUNICATION  

    Are any DTCs displayed?

    Yes  : Record the DTC, time stamp and freeze frame data. Go to  4.

    No  : Go to  3.

  3. PERFORM GENERAL DIAGNOSTICS  .
    1. Perform the inspection by referring to "General Diagnostic Table". Ref. to BRAKE CONTROL (DIAGNOSTICS)>GENERAL DIAGNOSTIC TABLE>INSPECTION 
    2. Using the Subaru Select Monitor, perform the clear memory of [Brake Control]. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY
    3. Execute the inspection mode. Ref. to BRAKE CONTROL (DIAGNOSTICS)>INSPECTION MODE 
    4. Read the DTC of [Brake Control] using the Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) 
    5. Check that the DTC is not displayed.

    Do the VDC warning light & VDC indicator light, VDC OFF indicator light and ABS warning light go off after starting the engine?

    Do the brake warning light (EBD warning light)/electronic parking brake warning light and the electronic parking brake operation indicator light go off with the electronic parking brake disengaged?

    Yes  : Finish the diagnosis.

    No  : Check the combination meter circuit. Ref. to BRAKE CONTROL (DIAGNOSTICS)>WARNING LIGHT ILLUMINATION PATTERN>ABS WARNING LIGHT DOES NOT GO OFF  Ref. to BRAKE CONTROL (DIAGNOSTICS)>WARNING LIGHT ILLUMINATION PATTERN>VDC WARNING LIGHT AND VDC INDICATOR LIGHT DO NOT GO OFF  Ref. to BRAKE CONTROL (DIAGNOSTICS)>WARNING LIGHT ILLUMINATION PATTERN>VDC OFF INDICATOR LIGHT DOES NOT GO OFF  Ref. to BRAKE CONTROL (DIAGNOSTICS)>WARNING LIGHT ILLUMINATION PATTERN>BRAKE WARNING LIGHT (EBD WARNING LIGHT)/ELECTRONIC PARKING BRAKE WARNING LIGHT DOES NOT GO OFF  Ref. to BRAKE CONTROL (DIAGNOSTICS)>WARNING LIGHT ILLUMINATION PATTERN>ELECTRONIC PARKING BRAKE INDICATOR LIGHT DO NOT GO OFF 

  4. PERFORM DIAGNOSIS  .
    1. Refer to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)  .
      NOTE:

      For the DTC list, refer to "Diagnostic Trouble Code (DTC)". Ref. to  BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST  

    2. Repair or replace the cause of trouble.
    3. Using the Subaru Select Monitor, perform the clear memory of [Brake Control]. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY
    4. Execute the inspection mode. Ref. to BRAKE CONTROL (DIAGNOSTICS)>INSPECTION MODE 
    5. Read the DTC of [Brake Control] using the Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) 

    Are any DTCs displayed?

    Yes  : Repeat step  4 until DTC is not shown.

    No  : Finish the diagnosis.

NOTE:
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