| DTC Code | DTC Name |
|---|---|
| C1A11 | Front Radar Sensor Incorrect Axial Gap |
| C1A14 | Front Radar Sensor Beam Axis Not Adjusted |
DESCRIPTION
When the vehicle is determined to be driving in a straight line or on a slow curve based on signals from the yaw rate sensor, etc., the front millimeter wave radar sensor performs a self diagnosis to check if the sensor beam axis is deviated from the vehicle movement direction. When the front millimeter wave radar sensor assembly's beam axis is deviated, the driving support ECU detects this, and outputs DTC C1A11.
After installing a new front millimeter wave radar sensor, if the sensor beam axis adjustment is not performed, DTC C1A14 is output.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A11 | With power switch ON (IG) and front millimeter wave radar sensor performing self diagnosis, axis deviation is detected for 1 sec. (sensor self diagnosis operates when vehicle is driven at approximately 50 km/h (31 mph) for 10 hours) |
|
| C1A14 | Driving at 10 km/h (6 mph) or more while front millimeter wave radar sensor's axis adjustment has not been performed for 1 sec. |
|
INSPECTION PROCEDURE
PROCEDURE
ADJUST FRONT MILLIMETER WAVE RADAR SENSOR
Adjust the front millimeter wave radar sensor (see pageClick here).
CHECK FOR DTC
Using the intelligent tester, enter the following menus: Powertrain / Radar Cruise / DTC.
Select "Clear" and clear the data.
Recheck for DTC.
| OK |
|---|
| DTC C1A11 or C1A14 is not output. |
After performing the radar beam axis adjustment, if the same DTC is output again after the DTC detection conditions are met, replace the driving support ECU.
REPLACE DRIVING SUPPORT ECUClick here
END