- Millimeter wave radar sensor
- Driving support ECU
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VJTA |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 11/2017] |
| Title: PRE-COLLISION: PRE-COLLISION SYSTEM: C1A0A; Front Radar Sensor Region Code Mismatch; 2016 - 2017 MY Sienna [12/2015 - 11/2017] | ||
|
DTC |
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.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1A0A |
When the ignition switch is ON, the country code of the driving support ECU and millimeter wave radar sensor do not match for approximately. 1 second. |
|
CAUTION / NOTICE / HINT
NOTICE:
When the millimeter wave radar sensor is replaced with a new one, adjustment of the radar sensor beam axis must be performed (See page
![2016 - 2017 MY Sienna [12/2015 - 11/2017]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT](/t3Portal/stylegraphics/info.gif)
).
PROCEDURE
|
1. |
CHECK MILLIMETER WAVE RADAR SENSOR |
(a) Change the millimeter wave radar sensor to aiming adjustment mode (See page
).
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.
|
|
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 (See page
).
(c) Check for DTCs (See page
).
OK:
DTC C1A0A is not output.
| OK |
|
END |
|
|
3. |
REPLACE MILLIMETER WAVE RADAR SENSOR |
(a) Replace the millimeter wave radar sensor (See page
).
|
|
4. |
ADJUST MILLIMETER WAVE RADAR SENSOR |
(a) Adjust the millimeter wave radar sensor (See page
).
|
|
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 (See page
).
(c) Check for DTCs (See page
).
OK:
DTC C1A0A is not output.
| OK |
|
END |
| NG |
|
|
|