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

Short to GND in Immobiliser System Power Source Circuit (B278A)

DESCRIPTION This DTC is stored when the engine switch power source supply line is open or shorted. DTC Code DTC Detection Condition Trouble Area B ...

ID BOX EEPROM Malfunction (B2790)

DESCRIPTION This DTC is stored when the ID code box detects an internal malfunction. DTC Code DTC Detection Condition Trouble Area B2790 ...

Other materials about Toyota 4Runner:

Seat belts
Make sure that all occupants are wearing their seat belts before driving the vehicle. Correct use of the seat belts • Extend the shoulder belt so that it comes fully over the shoulder, but does not come into contact with the neck or slide off the sho ...

Installation
INSTALLATION PROCEDURE 1. INSTALL REAR FLOOR SIDE AIRBAG SENSOR (a) Turn the ignition switch off. (b) Disconnect the cable from the negative (-) battery terminal. CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) bat ...