| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000018YBG |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: PRE-COLLISION: PRE-COLLISION SYSTEM: C1A10; Front Radar Sensor; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
DTC |
C1A10 |
Front Radar Sensor |
DESCRIPTION
The driving support ECU assembly uses the millimeter wave radar sensor assembly to detect objects in front of the vehicle.
Based on this signals from the millimeter wave radar sensor assembly, the driving support ECU assembly sends pre-collision system control operation signals.
If the driving support ECU assembly receives an internal malfunction signal from the millimeter wave radar sensor assembly, it stores DTC C1A10.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1A10 |
Front Radar Sensor |
When the ignition switch is ON, the driving support ECU assembly receives an internal malfunction signal from the millimeter wave radar sensor assembly for approximately 0.2 seconds. |
|
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.
- When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle. As a result, a DTC may be stored.
-
When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.
Click here
![2018 - 2020 MY Sienna [11/2017 - ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT](/t3Portal/stylegraphics/info.gif)
-
The pre-collision system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.
Click here
PROCEDURE
|
1. |
REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Replace the millimeter wave radar sensor assembly.
Click here
(b) Adjust the millimeter wave radar sensor assembly.
Click here
|
|
2. |
CHECK FOR DTCs (PRE-COLLISION SYSTEM) |
(a) Clear the DTCs.
Click here
(b) Perform the following procedure.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
- Turn the ignition switch to ON and wait 0.2 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC C1A10 is not output |
A |
|
DTC C1A10 is output |
B |
| A |
|
END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE) |
| B |
|
|
|