Diesel Data: Automotive Repair

Hybrid Vehicle Control System Does Not Start Using Smart Ignition Function (Start When Key Is Inserted)

HYBRID VEHICLE CONTROL SYSTEM DOES NOT START USING SMART IGNITION FUNCTION (STARTS WHEN KEY IS INSERTED)

CIRCUIT DESCRIPTION
If the smart ignition function does not operate, insert the smart key into the key slot and check if the hybrid control system starts. If the hybrid control system starts (the transponder key ECU outputs a start permission to the hybrid control system and the hybrid control system starts), it is considered that only the smart ignition system is malfunctioning.
If the driver's door is opened and closed, the power switch changes from ON (ACC) to OFF, or the power switch is changed from OFF to ON, the smart ECU uses the wireless door lock receiver to send a request signal to the smart key. Then, the smart key transmits its ID code to the door control receiver. The ID code, which is then sent to the smart ECU, is verified by the smart ECU and the verification result is sent to the transponder key ECU. The transponder key ECU and the smart ECU communicate encryption codes each other using the multiplex communication line. When the return code from the smart ECU matches the ID code in memory, the transponder key ECU sends a hybrid control system start permission signal to the hybrid control ECU. Pressing the power switch then starts the hybrid control system. Turning the power switch from ON (ACC) to OFF stops the hybrid control system.

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INSPECTION PROCEDURE