| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000018YBD |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: PRE-COLLISION: PRE-COLLISION SYSTEM: C1A01; Driving Support ECU; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
DTC |
C1A01 |
Driving Support ECU |
DESCRIPTION
The driving support ECU assembly uses the millimeter wave radar sensor assembly to detect objects in front of the vehicle.
Based on signals from the millimeter wave radar sensor assembly, the driving support ECU assembly calculates the possibility of a collision and operates the pre-collision system if it determines that the possibility is high.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1A01 |
Driving Support ECU |
When the ignition switch is ON, the driving support ECU assembly detects an internal malfunction for approximately 1 second. |
Driving support ECU assembly |
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.
PROCEDURE
|
1. |
CHECK FOR DTCs (PRE-COLLISION SYSTEM) |
(a) Clear the DTCs.
Click here
![2018 - 2020 MY Sienna [11/2017 - ]; PRE-COLLISION: PRE-COLLISION SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
(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 1 second or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC C1A01 is not output |
A |
|
DTC C1A01 is output |
B |
| A |
|
| B |
|
|
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