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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Immobiliser System - Diagnostic Codes & Symptom Tests - (Hybrid) >> Immobiliser System >> DTC B2784: Antenna Coil Open / Short [10/2014 - 10/2015] >> Procedure

DTC B2784: Antenna Coil Open / Short [10/2014 - 10/2015]: Procedure

  1. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - POWER SWITCH) 
    1. Disconnect the D110 certification ECU (smart key ECU assembly) connector.
    2. Disconnect the D46 power switch connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D110-13 (CODE) - D46-8 (CODE) Always Below 1 Ω
      D110-3 (TXCT) - D46-7 (TXCT) Always Below 1 Ω
      D110-9 (VC5) - D46-10 (VC5) Always Below 1 Ω
      D110-6 (AGND) - D46-6 (AGND) Always Below 1 Ω
      D110-13 (CODE) or D46-8 (CODE) - Body ground Always 10 kΩ or higher
      D110-3 (TXCT) or D46-7 (TXCT) - Body ground Always 10 kΩ or higher
      D110-9 (VC5) or D46-10 (VC5) - Body ground Always 10 kΩ or higher
      D110-6 (AGND) or D46-6 (AGND) - Body ground Always 10 kΩ or higher

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  2

  2. REPLACE POWER SWITCH 
    1. Temporarily replace the power switch with a new or known good one (Refer to REMOVAL [10/2014 - ] ).

    Result: 

    NEXT 

    See step  3

  3. CLEAR DTC 
    1. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - 10/2015] ).

    Result: 

    NEXT 

    See step  4

  4. CHECK FOR DTC 
    1. Check for DTCs (Refer to DTC CHECK / CLEAR [10/2014 - 10/2015] ).

      HINT: 

      Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.

      OK

      DTC B2784 is not output.

    Result: 

    OK 

    END (POWER SWITCH WAS DEFECTIVE) 

    Result: 

    NG 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

    (Refer to REMOVAL [10/2014 - ] )