Toyota Venza: Antenna Coil Open / Short (B2784)

Toyota Venza Service Manual / 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 in the transponder key coil (built into the engine switch).

DTC No.	DTC Detection Condition	Trouble Area
B2784	Transponder key coil is open or shorted.	Certification ECU (Smart key ECU assembly) Engine switch

CAUTION / NOTICE / HINT

NOTICE:

If the certification ECU (smart key ECU assembly) is replaced, register the key (See page ).

PROCEDURE

1.	CHECK DTC OUTPUT

(a) Clear the DTCs (See page ).

(b) Recheck for DTCs (See page ).

OK:

DTC B2784 is not output.

USE SIMULATION METHOD TO CHECK

2.	REPLACE ENGINE SWITCH

(a) Replace the engine switch (See page for
2GR-FE, See page for 1AR-FE)).

3.	CHECK DTC OUTPUT

(a) Clear the DTCs (See page ).

(b) Recheck for DTCs (See page ).

OK:

DTC B2784 is not output.

END (ENGINE SWITCH WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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DESCRIPTION This DTC is stored when one of the following occurs: 1) the ECM detects an error in its own communication with the certification ECU (smart key ECU assembly); 2) the ECM detects an er ...

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DESCRIPTION The security indicator light blinks continuously due to a continuous signal received from the certification ECU (smart key ECU assembly) while the engine immobiliser is set. WIRING D ...

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