| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000018K3T |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: CRUISE CONTROL: LANE DEPARTURE ALERT SYSTEM(w/ Steering Control): C1AAC; Vehicle Information Unmatched; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
DTC |
C1AAC |
Vehicle Information Unmatched |
DESCRIPTION
When the forward recognition camera is replaced with a new one, the new forward recognition camera attempts to store the vehicle information received from the ECM. If the vehicle information stored in the forward recognition camera is different from that stored in the ECM, DTC C1AAC is stored.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1AAC |
Vehicle Information Unmatched |
2 seconds after the ignition switch is turned to ON, the vehicle information received from the ECM and that stored in the forward recognition camera do not match. |
|
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
-
If the forward recognition camera has been replaced with a new one, be sure to perform forward recognition camera adjustment.
Click here
![2018 - 2020 MY Sienna [11/2017 - ]; CRUISE CONTROL: FRONT CAMERA: ADJUSTMENT (SEQUENTIAL RECOGNITION)](/t3Portal/stylegraphics/info.gif)
HINT:
This DTC is stored when the vehicle information stored in the forward recognition camera and that stored in the ECM do not match. If the forward recognition camera or ECM has been replaced, check if a forward recognition camera or ECM from another vehicle was used.
PROCEDURE
|
1. |
CHECK FOR DTCs (CAN COMMUNICATION DTC OUTPUT) |
HINT:
The forward recognition camera communicates with the ECM via CAN communication. Confirm that the CAN communication system is functioning normally before proceeding.
(a) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC U0100 is not output |
A |
|
DTC U0100 is output |
B |
| B |
|
|
|
2. |
READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / Front Recognition Camera / Data List.
(e) Read the Data List according to the display on the Techstream.
Chassis / Front Recognition Camera / Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Vehicle Information (2WD/4WD) |
Vehicle information |
2WD, 4WD or Unknown |
2WD: for 2WD 4WD: for AWD Unknown: Vehicle information not confirmed |
- |
|
Vehicle Information (Conv/HV) |
Vehicle information |
Conv, HV or Unknown |
Conv: Conventional HV: Hybrid vehicle Unknown: Vehicle information not confirmed |
- |
HINT:
- The vehicle information stored in the forward recognition camera is displayed on the Data List.
- If the vehicle information stored in the forward recognition camera is different from the actual vehicle specifications, the vehicle information stored in the forward recognition camera may be incorrect. Check for DTCs and replace the forward recognition camera if necessary.
- If the vehicle information stored in the forward recognition camera matches the actual vehicle specifications, the installed ECM is incompatible. Replace the ECM with a correct one.
|
Result |
Proceed to |
|---|---|
|
Vehicle information stored in forward recognition camera and actual vehicle specifications do not match |
A |
|
Vehicle information stored in forward recognition camera and actual vehicle specifications match |
B |
| B |
|
|
|
3. |
CHECK FOR DTCs (LANE DEPARTURE ALERT 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 2 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC C1AAC is not output |
A |
|
DTC C1AAC is output |
B |
| A |
|
| B |
|
|
|