Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Front Radar Sensor Incorrect Axial Gap (C1A11,C1A14)

DESCRIPTION

The forward recognition camera uses the millimeter wave radar sensor assembly to detect obstacles in front of the vehicle.

When the vehicle is determined to be driving in a straight line or on a gradual curve based on signals from the yaw rate sensor etc., the millimeter wave radar sensor assembly performs self diagnosis to check if the sensor beam axis has deviated from the vehicle movement direction. When the millimeter wave radar sensor assembly beam axis has deviated, the forward recognition camera detects this, and 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

2 seconds after the engine switch is turned on (IG), misalignment of the millimeter wave radar sensor assembly is detected for approximately 5 seconds.

Pre-collision system

C1A14

Front Radar Sensor Beam Axis Not Adjusted

2 seconds after the engine switch is turned on (IG), incompletion of the millimeter wave radar sensor assembly beam axis alignment is detected for approximately 5 seconds.

Pre-collision system

PROCEDURE

1.

GO TO PRE-COLLISION SYSTEM

HINT:

If DTC C1A11 or C1A14 is output by the front camera system, perform troubleshooting for the pre-collision system.

Click here

NEXT

END

    Front Radar Sensor (C1A10)

    Front Camera Module Circuit (C1AA0)

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