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 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 |
After
the ignition switch is turned to ON for 3 seconds or more, when the
vehicle is being driven at a speed of 1 km/h or 1 mph or more, a signal
from the yaw rate and acceleration sensor (airbag sensor assembly)
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 |
After
the ignition switch is turned to ON for 3 seconds or more, when the
vehicle is being driven at a speed of 1 km/h or 1 mph or more, a signal
from the yaw rate and acceleration sensor (airbag sensor assembly)
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 Axis Adjustment.
Click here 
- The forward recognition camera 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: Forward
recognition camera 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 |
 | GO TO VEHICLE STABILITY CONTROL SYSTEM |
|
A |
 | |
| 2. |
CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM) |
(a) Clear the DTCs. Click here
(b) Make sure that the DTC detection conditions are met. HINT: If the conditions are not met, the system cannot detect the malfunction.
(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 |
| USE SIMULATION METHOD TO CHECK |
|
B | |
| |
| 3. |
REPLACE FORWARD RECOGNITION CAMERA | (a) Replace the forward recognition camera.
Click here (b) Perform forward recognition camera axis adjustment.
Click here
|
NEXT | |
| |
| 4. |
CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM) |
(a) Clear the DTCs. Click here
(b) Make sure that the DTC detection conditions are met. HINT: If the conditions are not met, the system cannot detect the malfunction.
(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 |
| REPLACE YAW RATE AND ACCELERATION SENSOR (AIRBAG SENSOR ASSEMBLY) | |
