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 in the transponder key coil (built into the engine switch).

DTC No. DTC Detection Condition Trouble Area
B2784 Antenna coil is open or shorted.

  • Certification ECU

  • Engine switch

WIRING DIAGRAM

A011BY6E17

INSPECTION PROCEDURE

Note

If the certification ECU is replaced, register the key.

PROCEDURE


  1. REPLACE ENGINE SWITCH


    1. Replace the engine switch Click here.


    NEXT

  2. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Recheck for DTCs Click here.

      OK
      B2784 output does not recur.

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (ENGINE SWITCH IS DEFECTIVE)