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Home >> Subaru >> 2024 >> Impreza Base >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control System (Diagnostics) >> Basic Diagnostic Procedure >> Procedure

Basic Diagnostic Procedure: Procedure

CAUTION:
  • Subaru Select Monitor is required for reading DTC, performing diagnosis and reading data monitor.
  • Remove foreign matter (dust, water, oil, etc.) from the body integrated unit connector during removal and installation.
NOTE: To check harness for open or short circuits, shake the suspected trouble spot or connector.
  1. PREPARATION BEFORE DIAGNOSIS  .
    1. Using the Check List for Interview, ask the user the condition of the malfunction occurrence. Ref. to BODY CONTROL (DIAGNOSTICS)>CHECK LIST FOR INTERVIEW .
    2. Before performing the diagnosis, perform inspection of general description. Ref. to BODY CONTROL (DIAGNOSTICS)>GENERAL DESCRIPTION>INSPECTION .

    Is the check result OK?

    Yes  : GO TO  2.

    No  : Repair the defective part.

  2. CHECK DTC  .
    1. Turn the ignition switch to ON.
    2. Read the DTC of [Body Control] using the Subaru Select Monitor. Ref. to BODY 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 BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE FOR SUBARU SELECT MONITOR COMMUNICATION>INSPECTION .

    Are any DTCs displayed? (Current code)

    Yes  : Record the DTC, time stamp and freeze frame data, and GO TO  3.

    No  : Perform diagnosis according to the procedures in the diagnostics with phenomenon. Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON .

  3. PERFORM DIAGNOSIS  .
    1. Perform the diagnosis for the displayed DTCs. Ref. to BODY 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 [Body Control]. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY .
    4. Execute the inspection mode. Ref. to BODY CONTROL (DIAGNOSTICS)>INSPECTION MODE .
    5. Read the DTC of [Body Control] using the Subaru Select Monitor. Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
    NOTE: For detailed operation procedures, refer to "Help" of application.

    Are any DTCs displayed? (Current code)

    Yes  : Repeat step 3 until DTC is not shown. GO TO  3.

    No  : Finish the diagnosis.