B2797

THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM (w/o Smart Key System): B2793, B2794, B2797, B2798:

B2797 - Communication Malfunction No. 1

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 B2797 is stored when a key with a BCC malfunction is inserted into the ignition key cylinder.

* DTC B2798 is stored when a key is inserted into the ignition key cylinder but a communication error occurs between the key and transponder key ECU assembly.





* *: Only output while a malfunction is present.

Vehicle Condition and Fail-safe Operation when Malfunction Detected





Related Data List and Active Test





INSPECTION PROCEDURE

NOTICE:
* When the key is replaced, refer to Registration Engine Immobilizer System (w/o Smart Key System).
* After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.

PROCEDURE

1. CLEAR DTC

(a) Clear the DTCs Engine Immobilizer System (w/o Smart Key System).

NEXT -- Continue to next step.

2. CHECK FOR DTC

(a) Check for DTCs using all registered keys Engine Immobilizer System (w/o Smart Key System).

HINT
If a DTC is stored, check for DTCs with the next key after clearing the DTCs.

OK:

DTC B2793, B2974, B2797 or B2798 is not output.

Result





C -- REPLACE KEY THAT CANNOT START ENGINE

B -- REPLACE TRANSPONDER KEY ECU ASSEMBLY Removal

A -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting