| DTC Code | DTC Name |
|---|---|
| U0125 | Lost Communication with Yaw Rate Sensor Module |
| U0126 | Lost Communication With Steering Angle Sensor Module |
| U0129 | Lost Communication with Brake System Control Module |
| U0235 | Lost Communication with Cruise Control Front Distance Range Sensor |
| U023A | Lost Communication with Front Camera Module |
| U0293 | Lost Communication with HV ECU |
| U1002 | Lost Communication with Gateway Module |
DESCRIPTION
The driving support ECU assembly uses the millimeter wave radar sensor assembly to detect obstacles in front of the vehicle. Based on this information, the driving support ECU assembly sends pre-crash control operation signals. These DTCs are stored when a communication malfunction occurs between the sensors and ECUs that detect crashes, or between ECUs that perform the pre-crash control.
The driving support ECU assembly, millimeter wave radar sensor assembly and forward recognition camera are connected via CAN communication lines. If communication with the millimeter wave radar sensor assembly or forward recognition camera stops, the driving support ECU assembly will store DTC U1002.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0125 | When the power switch is on (IG), a communication error between the airbag sensor assembly (yaw rate sensor) and the driving support ECU is detected for approximately 1 second. |
|
| U0126 | When the power switch is on (IG), a communication error between the steering sensor and the driving support ECU assembly is detected for approximately 4 seconds. |
|
| U0129 | When the power switch is on (IG), a communication error between the brake booster with master cylinder assembly (skid control ECU) and the driving support ECU assembly is detected for approximately 3 seconds. |
|
| U0235 | When the power switch is on (IG), a communication error between the millimeter wave radar sensor assembly and the driving support ECU assembly is detected for approximately 1 second. |
|
| U023A | When the power switch is on (IG), a communication error between the forward recognition camera and driving support ECU is detected for approximately 2 seconds. |
|
| U0293 | When the power switch is on (IG), a communication error between the hybrid vehicle control ECU assembly and the driving support ECU assembly is detected for approximately 10 seconds. |
|
| U1002 | When the power switch is on (IG), a communication error between the millimeter radar sensor and driving support ECU assembly or the forward recognition camera and driving support ECU assembly is detected for 2 seconds or more. |
|
PROCEDURE
CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Pre-Crash 2 / Trouble Codes.
Clear the DTCs (Click here).
Make sure that the DTC detection conditions are met.
If the detection conditions are not met, the system cannot detect the malfunction.
Check for DTCs (Click here).
| Result | Proceed to |
|---|---|
| DTC U0125, U126, U0129, U0235, U023A, U0293 and U1002 are not output | A |
| DTC U0125, U126, U0129, U0235, U023A, U0293 or U1002 are output | B |
USE SIMULATION METHOD TO CHECK (Click here)
GO TO CAN COMMUNICATION SYSTEM (Click here)