ENGINE IMMOBILISER SYSTEM (w/ Entry and Start System), Diagnostic DTC:B2784

DTC Code DTC Name
B2784 Antenna Coil Open / Short

DESCRIPTION

This DTC is stored when there is an open or short malfunction in the transponder key amplifier coil (built into the engine switch).

DTC Code DTC Detection Condition Trouble Area
B2784 The transponder key amplifier coil is open/shorted.

  • Certification ECU

  • Engine switch

INSPECTION PROCEDURE

PROCEDURE


  1. REPLACE ENGINE SWITCH


    1. for 1ZR-FAE:


      1. Temporarily replace the engine switch with a new or normally functioning one Click here.

    2. for 2ZR-FAE:


      1. Temporarily replace the engine switch with a new or normally functioning one Click here.

    3. for 3ZR-FAE:


      1. Temporarily replace the engine switch with a new or normally functioning one Click here.

    4. for 3ZR-FE:


      1. Temporarily replace the engine switch with a new or normally functioning one Click here.


    NEXT

  2. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  3. CHECK FOR DTC


    1. Recheck for DTCs Click here.

      OK
      DTC B2784 is not output.

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (ENGINE SWITCH IS DEFECTIVE)