Engine Immobilizer System

DTC B2799/99 ENGINE IMMOBILIZER SYSTEM MALFUNCTION

CIRCUIT DESCRIPTION

DTC Detection Condition:

This DTC is output when: 1) the ECM detects errors in its own communications with the transponder key ECU assembly; 2) the ECM detects errors in the communication lines; and 3) the ECU communication ID between the transponder key ECU assembly and the ECM is different and an engine start is attempted.

Before troubleshooting for this DTC, make sure no transponder key ECU assembly DTCs are present. If the transponder key ECU assembly has a key code related DTC, repair it first.

Wiring Diagram:

Step 1:

INSPECTION PROCEDURE