DYNAMIC RADAR CRUISE CONTROL SYSTEM(for Mono Camera Type), Diagnostic DTC:C1A11, C1A14

DTC Code DTC Name
C1A11 Front Radar Sensor Incorrect Axial Gap
C1A14 Front Radar Sensor Beam Axis Not Adjusted

DESCRIPTION

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

When it is determined that the vehicle is being driven in a straight line or on a gradual curve based on signals from the yaw rate sensor, the millimeter wave radar sensor assembly performs self-diagnosis to check if the sensor beam axis has deviated. When the millimeter wave radar sensor assembly beam axis is misaligned, the driving support ECU assembly stores DTC C1A11.

After installing a new millimeter wave radar sensor assembly, if sensor beam axis adjustment is not performed, DTC C1A14 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A11 Front Radar Sensor Incorrect Axial Gap

w/o Full-speed range following function:


  • When the vehicle is being driven at a speed of 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, misalignment of the millimeter wave radar sensor assembly is detected for approximately 0.3 seconds or more.

w/ Full-speed range following function:


  • When the vehicle is being driven at a speed of 5 km/h (3 mph) or more and the dynamic radar cruise control system is operating, misalignment of the millimeter wave radar sensor assembly is detected for approximately 0.3 seconds or more.

 Pre-collision system
C1A14 Front Radar Sensor Beam Axis Not Adjusted

w/o Full-speed range following function:


  • When the vehicle is being driven at a speed of 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, incompletion of the millimeter wave radar sensor beam axis alignment is detected for approximately 0.3 seconds or more.

w/ Full-speed range following function:


  • When the vehicle is being driven at a speed of 5 km/h (3 mph) or more and the dynamic radar cruise control system is operating, incompletion of the millimeter wave radar sensor beam axis alignment is detected for approximately 0.3 seconds or more.

 Pre-collision system

PROCEDURE


  1. CHECK FOR PRE-COLLISION SYSTEM


    1. Check for pre-collision system.

      Click here

      Result
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