Toyota 4Runner manuals

Toyota 4Runner: Transponder Chip Malfunction (B2793-B2795)

DESCRIPTION

  • DTC B2793 is stored when a malfunction is found in the key during key code registration or a key code is not registered normally. Replace the key if key code registration cannot be performed normally and this DTC is output.
  • DTC B2794 is stored when a key with an incomplete key code is inserted into the ignition key cylinder.
  • DTC B2795 is stored when a key with a key code that is not registered in the ECU is inserted into the ignition key cylinder.

DTC Code

DTC Detection Condition

Trouble Area

B2793

A transponder chip malfunction.

Key

B2794

A key with an incomplete key code is inserted into the ignition key cylinder.

B2795

A key with an unregistered key code is inserted into the ignition key cylinder.

CAUTION / NOTICE / HINT

NOTICE:

When the key is replaced, refer to Registration (See page ).


PROCEDURE

1.

REREGISTER KEY

(a) Clear the DTCs (See page ).


(b) Reregister the key code with the transponder key ECU assembly.

(c) Check that the engine starts with the key.

OK:

Engine starts.


OK

END


NG

REPLACE KEY

Antenna Coil Open / Short (B2784)
DESCRIPTION The antenna coil receives key code signals from the transponder chip in the key grip. The coil is built into the transponder key amplifier, which amplifies the key code signals and ou ...

Communication Malfunction No. 1 (B2797)
DESCRIPTION This DTC is stored when a communication error occurs between the transponder key amplifier and transponder key ECU assembly. Some possible reasons for the communication error are: 1) ...

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