DESCRIPTION The forward
recognition camera receives vehicle stability signals from the yaw rate
and acceleration sensor (airbag sensor assembly). If the yaw rate and
acceleration sensor (airbag sensor assembly) detects an abnormal yaw
rate sensor signal or yaw rate sensor assembly 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 |
3
seconds after the ignition switch is turned to ON, the vehicle speed is
5 km/h (3 mph) or more and a signal from the yaw rate sensor indicating
a malfunction in the yaw rate sensor is detected by the forward
recognition camera for 5 seconds or more. |
- Vehicle stability control system
- Yaw rate and acceleration sensor (airbag sensor assembly)
- Forward recognition camera
| | C1AA5 |
Yaw Rate Sensor Power Supply Voltage Circuit |
3
seconds after the ignition switch is turned to ON, the vehicle speed is
5 km/h (3 mph) or more and a signal from the yaw rate sensor indicating
an abnormal yaw rate sensor power supply voltage signal is detected by
the forward recognition camera for 5 seconds or more. |
- Vehicle stability control system
- Yaw rate and acceleration sensor (airbag sensor assembly)
- Forward recognition camera
| 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 learning.
Click here 
- First check the CAN communication system by following How to Proceed
with Troubleshooting. After checking that there are no malfunctions in
the CAN communication system, proceed with troubleshooting.
Click here
PROCEDURE |
1. | CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM) |
HINT: If
the yaw rate and acceleration sensor (airbag sensor assembly) is
malfunctioning, DTCs for the vehicle stability control system will be
stored. Troubleshoot the vehicle stability control system first. (a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON. (c) Turn the Techstream on.
(d) 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 |
 | GO TO VEHICLE STABILITY CONTROL SYSTEM |
|
A |
 | |
(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 / LKA/LDA / Trouble Codes. (e) Clear the DTCs.
(f) Make sure that the DTC detection conditions are met. HINT: If the following procedure is not performed, the previously output DTC cannot be detected.
(g) Check for DTCs. |
Result | Proceed to | |
DTC C1AA4 or C1AA5 is output. |
A | | DTC C1AA4 and C1AA5 are not output. |
B |
| B |
| USE SIMULATION METHOD TO CHECK |
|
A | |
| |
| 3. |
REPLACE FORWARD RECOGNITION CAMERA | (a) Replace the forward recognition camera.
Click here (b) Adjust the forward recognition camera.
Click here
|
NEXT | |
| |
(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 / LKA/LDA / Trouble Codes. (e) Clear the DTCs.
(f) Make sure that the DTC detection conditions are met. HINT: If the following procedure is not performed, the previously output DTC cannot be detected.
(g) Check for DTCs. |
Result | Proceed to | |
DTC C1AA4 or C1AA5 is output. |
A | | DTC C1AA4 and C1AA5 are not output. |
B |
| A |
| REPLACE YAW RATE AND ACCELERATION SENSOR (AIRBAG SENSOR ASSEMBLY) |
| B |
| END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) | | 
