| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000018K3P |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: CRUISE CONTROL: LANE DEPARTURE ALERT SYSTEM(w/ Steering Control): C1AA4,C1AA5; Yaw Rate Sensor Circuit; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
DTC |
C1AA4 |
Yaw Rate Sensor Circuit |
|
DTC |
C1AA5 |
Yaw Rate Sensor Power Supply Voltage Circuit |
DESCRIPTION
The forward recognition camera receives vehicle stability signals from the yaw rate sensor (airbag sensor assembly). If the yaw rate sensor (airbag sensor assembly) detects an abnormal yaw rate sensor signal or yaw rate sensor power supply voltage, it informs the forward recognition camera via CAN communication, and DTC C1AA4 or C1AA5 is stored.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1AA4 |
Yaw Rate Sensor Circuit |
When all of the following conditions are met:
|
|
|
C1AA5 |
Yaw Rate Sensor Power Supply Voltage Circuit |
When all of the following conditions are met:
|
|
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)
-
The lane departure alert 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. |
CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM) |
HINT:
Lane departure alert system DTC C1AA4 or C1AA5 may be stored due to a malfunction in the vehicle stability control system. Therefore it is necessary to check for and troubleshoot vehicle stability control system DTCs first.
(a) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
Vehicle stability control system DTCs are not output |
A |
|
Vehicle stability control system DTCs are output |
B |
| B |
|
|
|
2. |
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.
- Drive the vehicle at a speed of 1 km/h or 1 mph or more for 5 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC C1AA4 and C1AA5 are not output |
A |
|
DTC C1AA4 or C1AA5 is output |
B |
| A |
|
|
|
3. |
REPLACE FORWARD RECOGNITION CAMERA |
(a) Replace the forward recognition camera.
Click here
(b) Perform forward recognition camera adjustment.
Click here
|
|
4. |
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.
- Drive the vehicle at a speed of 1 km/h or 1 mph or more for 5 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC C1AA4 and C1AA5 are not output |
A |
|
DTC C1AA4 or C1AA5 is output |
B |
| A |
|
END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) |
| B |
|
|
|