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

DTC Code DTC Name
B2784 Antenna Coil Open / Short

DESCRIPTION

The antenna 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.

This DTC is stored when there is an open or short in the antenna coil.

DTC Code

DTC Detection Condition

Trouble Area

B2784

The antenna coil is open/shorted.

Transponder key amplifier

WIRING DIAGRAM

B121682E39

PROCEDURE

  1. CLEAR DTC

    1. Clear the DTCs (Click here).

  2. CHECK FOR DTC

    1. Check for DTCs (Click here).

      OK

      DTC B2784 is not output.

    USE SIMULATION METHOD TO CHECK

    (Click here)

    REPLACE TRANSPONDER KEY AMPLIFIER

    (Click here)