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Home >> Subaru >> 2018 >> WRX Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Security And Locks - Keyless Access (W/ Push Button Start) (Diagnostics) >> Basic Diagnostic Procedure >> Procedure

Basic Diagnostic Procedure: Procedure

CAUTION:
  • Subaru Select Monitor kit is required for reading DTC, performing diagnosis and reading current data.
  • Before removal or installation, be sure to remove any foreign matter (dust, moisture, oil, etc.).
  • Registration of immobilizer may be needed after the replacement of control modules, etc. For detailed procedure, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume. Contact an Authorized Subaru Dealership.
NOTE:
  1. CHECK BATTERY  .

    Use a tester to measure the voltage of the battery.

    Is the voltage 11 V or more?

    Yes: Go to  2

    No: Charge or replace the battery and perform check pre-inspection. Go to  2

  2. CHECK PRE-INSPECTION  .

    Use the interview check list to interview the user. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>Check List for Interview 

    Was the symptoms of the trouble recorded in the interview?

    Yes: Go to  3

    No: Interview the user again.

  3. BASIC INSPECTION  .

    Perform the inspection for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

    Is the check result OK?

    Yes: Go to  4

    No: Check it according to DTC of LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

  4. CHECK TROUBLE SYMPTOM  .
    1. Read DTCs for the keyless access system. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC)>OPERATION 
      NOTE: If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>Subaru Select Monitor>COMMUNICATION FOR INITIALIZING IMPOSSIBLE 
    2. Record all DTCs, time stamp and freeze frame data.
      NOTE: For time stamp, refer to "LAN SYSTEM". Ref. to LAN SYSTEM (DIAGNOSTICS)>General Description>CAUTION>TIME STAMP

    Are any DTCs displayed?

    Yes: Perform the diagnosis for the displayed DTCs. After diagnosis, Go to  7

    No: Go to  5

  5. CHECK PHENOMENON LIST  .

    Check the "Phenomenon List". Ref. to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>General Diagnostic Table 

    Is there a symptom that corresponds in the phenomenon list?

    Yes: Perform diagnosis according to the procedures in the phenomenon list.

    No: Go to  6

  6. CHECK TROUBLE PHENOMENON  .
    1. Perform check of current data. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>Read Current Data 
    2. Perform a function check. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>General Description>CAUTION>KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM 
    3. Perform a unit check.

    Was the trouble cause found?

    Yes: Repair the cause of trouble.

    No: Repeat a basic check again.

  7. PERFORM DIAGNOSIS  .
    1. Perform the Clear Memory Mode. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>Clear Memory Mode 
    2. Perform the Inspection Mode. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>Inspection Mode 

    Are any DTCs displayed?

    Yes: Perform the diagnosis for the displayed DTCs.

    No: Finish the diagnosis.