Engine Immobilizer System (w/ Smart Key System)

DTC B2799-539 Engine Immobilizer System Malfunction
DTC B2799-540 Engine Immobilizer System Malfunction
DTC B2799-541 Engine Immobilizer System Malfunction
DTC B2799-542 Engine Immobilizer System Malfunction
DTC B2799-543 Engine Immobilizer System Malfunction
DTC B2799-544 Engine Immobilizer System Malfunction

DESCRIPTION

DTC Detection Condition:

These DTCs are detected when: 1) the wire harness between the transponder key ECU and hybrid vehicle control ECU is open or shorted, 2) the ECU communication IDs of the hybrid vehicle control ECU and transponder key ECU are different, 3) the start ON (READY) signal is delayed, or 4) the key codes are unmatched.

Before troubleshooting for these DTCs, make sure no transponder key ECU DTCs are present. If present, troubleshoot the transponder key ECU DTCs or hybrid vehicle control ECU DTCs first.

Wiring Diagram:

Step 1-3:

Step 3 (Continued):

INSPECTION PROCEDURE