DESCRIPTION These DTCs are output when a communication malfunction occurs between the sensors and ECUs. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area | |
U0123 | Lost Communication with Yaw Rate Sensor Module |
3
seconds after the ignition switch is turned to ON, the vehicle is being
driven at 5 km/h (3 mph) or more and a communication error between the
yaw rate sensor and the forward recognition camera is detected for
approximately 5 seconds or more. |
- CAN communication system
- Yaw rate and acceleration sensor (airbag sensor assembly)
- Forward recognition camera
| | U0126 |
Lost Communication With Steering Angle Sensor Module |
3
seconds after the ignition switch is turned to ON, a communication
error between the spiral with sensor cable sub-assembly and the forward
recognition camera is detected for approximately 5 seconds or more. |
- CAN communication system
- Spiral with sensor cable sub-assembly
- Forward recognition camera
| | U0129 |
Lost Communication with Brake System Control Module |
3
seconds after the ignition switch is turned to ON, a communication
error between the skid control ECU (brake actuator assembly) and the
forward recognition camera is detected for approximately 5 seconds or
more. |
- CAN communication system
- Skid control ECU (Brake actuator assembly)
- Forward recognition camera
| | U0142 |
Lost Communication with Body Control Module "B" |
3
seconds after the ignition switch is turned to ON, a communication
error between the main body ECU (multiplex network body ECU) and the
forward recognition camera is detected for approximately 5 seconds or
more. |
- CAN communication system
- Main body ECU (Multiplex network body ECU)
- Forward recognition camera
| | U0155 |
Lost Communication with Combination Meter |
3
seconds after the ignition switch is turned to ON, a communication
error between the combination meter assembly and the forward recognition
camera is detected for approximately 50 seconds or more. |
- CAN communication system
- Combination meter assembly
- Forward recognition camera
| PROCEDURE
(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 detection conditions are not met, the system cannot detect the malfunction.
(g) Enter the following menus: Chassis / LKA/LDA / Trouble Codes. (h) Check the DTCs.
|
Result | Proceed to | |
DTC U0123, U0126, U0129, U0142 and U0155 are not output |
A | | DTC U0123, U0126, U0129, U0142 or U0155 is output |
B |
| A |
 | USE SIMULATION METHOD TO CHECK |
| B |
| GO TO CAN COMMUNICATION SYSTEM | |
