DESCRIPTION When a
communication error between the forward recognition camera and the power
steering ECU (rack and pinion power steering gear assembly) is
detected, the forward recognition camera notifies other ECUs and DTC
U023A is stored. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area | |
U023A | Lost Communication with Front Camera Module |
When
the engine switch is on for 2 seconds or more, a communication
malfunction between the forward recognition camera and the power
steering ECU (rack and pinion power steering gear assembly) is detected
for 5 seconds or more. |
- Power steering system
- 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 adjustment.
Click here 
- The lane departure alert system (w/ steering control) 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 HINT:
If
DTC U023A is stored, the power steering system may be malfunctioning.
Check for DTCs related to the power steering system first. (a) Check for DTCs. Chassis > EMPS > Trouble Codes
|
Result | Proceed to | |
Power steering system DTCs are not output |
A | | Power steering system DTCs are output |
B |
| B |
 | GO TO POWER STEERING SYSTEM |
|
A |
 | |
(a) Clear the DTCs. Chassis > LKA/LDA > Clear DTCs
(b) Make sure that the DTC detection conditions are met. HINT: If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs. Chassis > LKA/LDA > Trouble Codes
|
Result | Proceed to | |
DTC U023A is not output |
A | | DTC U023A is output |
B |
| A |
| USE SIMULATION METHOD TO CHECK |
| B |
| REPLACE FORWARD RECOGNITION CAMERA | |
