ENGINE IMMOBILISER SYSTEM, Diagnostic DTC:B2784

DTC Code DTC Name
B2784 Antenna Coil Open / Short

DESCRIPTION

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

DTC Code DTC Detection Condition Trouble Area
B2784 Antenna coil is open/shorted

  • Certification ECU

  • Engine switch

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Check for DTC Click here.

      OK
      DTC B2784 is not output.

    NG

    REPLACE ENGINE SWITCH Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. REPLACE ENGINE SWITCH


    1. Temporarily replace the engine switch with a new one.



    NEXT

  3. CHECK FOR DTC


    1. Recheck for DTC Click here.

      OK
      DTC B2784 is not output.

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (ENGINE SWITCH IS DEFECTIVE)