C1A0A

PRE-COLLISION: PRE-COLLISION SYSTEM: C1A0A: Front Radar Sensor Region Code Mismatch
C1A0A - Front Radar Sensor Region Code Mismatch

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-collision 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.





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 Adjustments.

PROCEDURE

1. CHECK MILLIMETER WAVE RADAR SENSOR

(a) Change the millimeter wave radar sensor to aiming adjustment mode Adjustments.

HINT
Aiming adjustment does not need to the performed. When the millimeter wave radar sensor assembly is changed to aiming adjustment mode, specification information is acquired from the driving support ECU.

NEXT -- Continue to next step.

2. CHECK FOR DTC (PRE-COLLISION 2 SYSTEM)

(a) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.

(b) Clear the DTCs Pre-Collision System.

(c) Check for DTCs Pre-Collision System.

OK:

DTC C1A0A is not output.

NG -- REPLACE MILLIMETER WAVE RADAR SENSOR

OK -- END

3. REPLACE MILLIMETER WAVE RADAR SENSOR

(a) Replace the millimeter wave radar sensor Removal.

NEXT -- Continue to next step.

4. ADJUST MILLIMETER WAVE RADAR SENSOR

(a) Adjust the millimeter wave radar sensor Adjustments.

NEXT -- Continue to next step.

5. CHECK FOR DTC (PRE-COLLISION 2 SYSTEM)

(a) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.

(b) Clear the DTCs Pre-Collision System.

(c) Check for DTCs Pre-Collision System.

OK:

DTC C1A0A is not output.

NG -- REPLACE DRIVING SUPPORT ECU Removal

OK -- END