B2799

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

DESCRIPTION

DTC Detection Condition:

These DTCs are output when the hybrid vehicle control ECU detects errors in communication between the transponder key ECU and the hybrid vehicle control ECU, and in the communication lines. These DTCs are also output when a hybrid control system start is attempted while the ECU communication ID between the transponder key ECU and the hybrid vehicle control ECU are different. Before troubleshooting for DTCs, make sure that there is no DTC detected in the transponder key ECU. If there is key code related DTC detected in the transponder key ECU, repair it first.

Wiring Diagram:

Step 1-2:

Step 3:

INSPECTION PROCEDURE