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Home >> Lexus >> 2019 >> GS 350 Base, RWD >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System - Diagnostic Codes & Circuit Tests >> Pre-Collision System >> DTC C1A01: Driving Support ECU [09/2014 - 10/2015] >> Description
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DTC C1A01: Driving Support ECU [09/2014 - 10/2015]: Description

The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle.

Based on this information, the driving support ECU calculates the risk of a collision and operates the pre-collision system when it determines that the risk is high.

DTC Code DTC Detection Condition Trouble Area
C1A01 While the initial check is running, the engine switch is on (IG) and the pre-collision system is operating, an internal malfunction is detected in the driving support ECU for 2 seconds or more. Driving support ECU