In order to detect the extent of the collision during the initial stages of the collision in further details, the front airbag sensors have been changed from mechanical type to electrical type deceleration sensors. Accordingly, the deployment of the driver airbag and front passenger airbag is controlled in two stages according to the severity of the impact.

Lexus IS250 IS220d GSE20 ALE20 SUPPLEMENTAL RESTRAINT SYSTEM

Lexus IS250 IS220d GSE20 ALE20 SUPPLEMENTAL RESTRAINT SYSTEM

Before starting the following operations, wait for at least 90 seconds after disconnecting the negative (-) terminal cable from the battery:

This circuit supplies power to the seat belt control ECU.

The millimeter wave radar sensor and distance control ECU transmit the data for general vehicle control and diagnosis function along the communication line.

The seat belt control ECU receives signals from the skid control ECU, gateway ECU, center airbag sensor assembly, distance control ECU via the CAN communication system.

The distance control ECU receives signals from the ECM via the CAN communication system.

Delete the DTC .

The seat belt control ECU is connected to the gateway ECU using CAN communication.

The seat belt control ECU receives vehicle model information from the gateway ECU and determines whether the seat belt buckle switch information from the center airbag sensor assembly is for the driver seat or the passenger seat.

Delete the DTC .