Toyota 4Runner: Antenna Coil Open / Short (B2784)

Toyota 4Runner Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Engine Immobiliser System(w/ Smart Key System) / Antenna Coil Open / Short (B2784)

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 ).

CLEAR DTC

(a) Clear the DTCs (See page ).

3.	CHECK FOR DTC

(a) Check for DTCs (See page ).

OK:

DTC B2784 is not output.

END (ENGINE SWITCH IS DEFECTIVE)

REPLACE CERTIFICATION ECU

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