DTC    C1A0A    Front Radar Sensor Region Code Mismatch

for Preparation Click here


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 sends pre-crash control operation signals.
When the millimeter wave radar sensor is replaced with a new one, it acquires the country specification information from the driving support ECU. Also, when the driving support ECU is replaced with a new one, it receives country specification information from the main body ECU. When country specification information in the sensor, ECU and/or main body ECU do not match, DTC C1A0A is stored.

DTC No.
DTC Detection Condition
Trouble Area
C1A0A
When the power switch is on (IG), the country specification information from the driving support ECU and millimeter wave radar sensor do not match for approx. 1 second.
  1. Millimeter wave radar sensor
  2. Driving support ECU

INSPECTION PROCEDURE

NOTICE:
When the millimeter wave radar sensor is replaced with a new one, adjustment of the radar sensor beam axis must be performed (Click here).

1.CHECK MILLIMETER WAVE RADAR SENSOR

  1. Using the intelligent tester, enter the following menus: Powertrain / Radar Cruise / Data List.

    Radar Cruise 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Country# (F Radar Sens)
    		Millimeter wave radar sensor country signal/JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC, NOFIX
    		Actual country code
    		-

  1. Read the Data List and check the country specification information of the millimeter wave radar sensor and vehicle.

    Result 
    Result
    		Proceed to
    Country specification information for vehicle and millimeter wave radar sensor match
    		A
    Country specification information for vehicle and millimeter wave radar sensor do not match
    		B



B
REPLACE MILLIMETER WAVE RADAR SENSOR (Click here)
A

REPLACE DRIVING SUPPORT ECU (Click here)