Toyota 4Runner Quiz
Vehicle Interior

Antenna Coil Open / Short (B2784)

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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
CAUTION / NOTICE / HINT

NOTICE:

Before replacing the certification ECU, refer to Registration (See page ).


PROCEDURE

  1. REPLACE ENGINE SWITCH

(a) Temporarily replace the engine switch with a new or normally functioning one (See page ).


NEXT

  1. CLEAR DTC

(a) Clear the DTCs (See page ).


NEXT

  1. CHECK FOR DTC

(a) Check for DTCs (See page ).


OK:

DTC B2784 is not output.


OK

END (ENGINE SWITCH IS DEFECTIVE)

NG

REPLACE CERTIFICATION ECU

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