B2799

DTC B2799

Circuit Description

The powertrain control module (PCM) communicates with transponder key ECU assembly to verify that there are no faults. The PCM can detect the following:

* The PCM detects errors in its own communication with the transponder key ECU assembly.
* The PCM detects errors in the communication lines.
* The communication ID between the transponder key ECU assembly and the PCM is different and an engine start is attempted.


If any one of the faults occurs, DTC B2799 will set.


Check to see that no other transponder key ECU assembly DTCs are present. If any DTCs for the transponder key ECU assembly is present, repair it first.


DTC Descriptor

This diagnostic procedure supports the following DTC:


DTC B2799 Engine Immobilizer System Malfunction


Conditions for Running the DTC

This DTC shall run when key is inserted into key cylinder.


Conditions for Setting the DTC

* Error in communication between PCM and transponder key ECU assembly and in communication line.
* Different communication ID is used for communication between transponder key ECU and PCM.



Action Taken When the DTC Sets

The engine will not start.


Conditions for Clearing the DTC

The DTC will clear when conditions for setting the DTC have been repaired.