ENGINE IMMOBILISER SYSTEM, Diagnostic DTC:B2784

DTC Code DTC Name
B2784 Antenna Coil Open / Short

DESCRIPTION

The transponder key coil receives key code signals from the transponder chip in the key grip. The coil is built into the transponder key amplifier, which amplifies the key code signals and outputs the signals to the transponder key ECU assembly.

DTC Code DTC Detection Condition Trouble Area DTC Output Confirmation Operation
B2784

The antenna coil built into the transponder key amplifier is open or shorted (determined by communication with transponder key ECU assembly) (1 trip detection logic*).


  • Terminal VC5, TEXT or CODE is open.

  • The antenna coil built into the transponder key amplifier is open.

 Transponder key amplifier Insert the key into the ignition key cylinder.

Vehicle Condition and Fail-safe Operation when Malfunction Detected
Vehicle Condition when Malfunction Detected Fail-safe Operation when Malfunction Detected
Engine cannot be started. -
Related Data List and Active Test
DTC Code Data List and Active Test
B2784 Antenna Coil Status

INSPECTION PROCEDURE

Note

After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs Click here.

      OK
      DTC B2784 is not output.

    NG

    REPLACE TRANSPONDER KEY AMPLIFIER Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here