Toyota 4Runner manuals

Toyota 4Runner: 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 ).



NEXT

2.

CLEAR DTC

(a) Clear the DTCs (See page ).



NEXT

3.

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

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:

Installation
INSTALLATION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH and LH sides. The procedure listed below is for the LH side. When installing the window frame moulding, black out tape and outside stripe, heat the vehicle body ...

Rear Speed Sensor RH Malfunction (C1403,C1273,C1274,C1404)
DESCRIPTION Refer to DTCs C1401 and C1402 (See page ). DTC Code DTC Detection Condition Trouble Area C1403 C1404 One of the following conditions is met: At a vehicle speed of 10 k ...

© 2016-2021 | www.to4runner.net

0.0037