B2799 / INF 542

DTC B2799-542 Engine Immobilizer System Malfunction
DTC B2799-790 Engine Immobilizer System Malfunction

DESCRIPTION

DTC Detection Condition:

This DTC is output when one of the following occurs: 1) the hybrid vehicle control ECU detects errors in its own communications with the ID code box; 2) the hybrid vehicle control ECU detects errors in the communication lines; or 3) the ECU communication ID between the ID code box and hybrid vehicle control ECU is different and a hybrid control system start is attempted. Before troubleshooting for this DTC, makes sure no certification ECU DTCs are present. If present, troubleshoot the certification ECU DTCs first.

Wiring Diagram:

Step 1:

Step 1 (Continued)-4:

Step 4 (Continued):

INSPECTION PROCEDURE