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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 98 (Safety Connect System - Diagnostic Codes & Symptom Tests (Hybrid)) >> SAFETY CONNECT SYSTEM (for HV Model) >> DTC B15EC: Backup Battery Degradation [04/2018 - 08/2020] >> Procedure

DTC B15EC: Backup Battery Degradation [04/2018 - 08/2020]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC 
    1. Turn the power switch off.
    2. Connect the Techstream to the DLC3.
    3. Turn the power switch on (IG) and wait for 10 seconds.
    4. Turn the Techstream on.
    5. Clear the DTCs.

      Body Electrical > Telematics > Clear DTCs 

    6. Recheck for DTCs.

      Body Electrical > Telematics > Trouble Codes 

      Result

      Result Proceed to
      DTC B15EC is output A
      DTC B15EC is not output B

    Result: 

    REPLACE BUB (BACK-UP BATTERY). Refer to  REMOVAL [04/2018 - 08/2020] 

    Result: 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 - ]