B2799

DTC B2799 Engine Immobiliser System Malfunction

DESCRIPTION

DTC Detection Condition:

This DTC is output when one of the following occurs: 1) the ECM detected errors in its own communications with the transponder key ECU; 2) the ECM detects errors in the communication lines: or 3) the ECU - ECM communication ID between the transponder key ECU and ECM is different and an engine start is attempted. Before troubleshooting for this DTC, make sure no engine immobiliser DTCs are present. If present, troubleshoot the engine immobiliser DTCs first.

Wiring Diagram:

Step 1-2:

Step 2(Continued)-6:

Step 7-10:

Step 10(Continued):

INSPECTION PROCEDURE

HINT: When the transponder key ECU and/or ECM is replaced, reregister the ECU - ECM communication ID.