FAIL-SAFE FUNCTION
The VGRS ECU (front steering control ECU) performs fail-safe control according to the chart below when a malfunction occurs in the VGRS system.
| DTC Code | Detection Condition | Fail-safe Operation |
|---|---|---|
| C1591/51 | Actuator Neutral Position Calibration Undone | Control is not started |
| C1592/52 | Actuator Neutral Position Calibration Incomplete | Control is not started |
| C1593/53 | Actuator Standard Position | Control is not started |
| C1595/55 | Lost Communication with Steering Angle Sensor Module(SIL) | Returns the front relative angle to the neutral position and stops or stops at the current position |
| C1597/57 | Lost Communication between VGRS and DRS | Returns the front relative angle to the neutral position and stops |
| C15A1/61 | Short in Motor Circuit | Control is not started or stops |
| C15A2/62 | Open in Motor Circuit | Control is not started or stops |
| C15A3/63 | Motor Rotation Angle Not Detected | Control is not started |
| C15A4/64 | Motor Rotation Angle Malfunction | Control is not stopped |
| C15A5/65 | Lock Mechanism Circuit | Control is not started or stops |
| C15A6/62 | Actuator Motor Power Distribution Malfunction | Control is not started or stops |
| C15A9/66 | Lock Holder Deviation Detection | Control is not stopped |
| C15AA/66 | Lock Mechanism Release Incomplete | Control is not stopped |
| C15AB/66 | Lock Mechanism Insertion | Control is not stopped |
| C15B1/71 | ECU Malfunction(CPU) | Control is not started or stops |
| C15B2/72 | ECU Malfunction (Internal Line) | Control is not started or stops |
| C15B3/73 | ECU Malfunction (Substrate Temperature Sensor) | Control continues |
| C15B4/71 | ECU Malfunction (Actuator Angle Record) | Control is not started or stops |
| C15B5/82 | ECU Malfunction (Flash Memory) | Control is not started or stops |
| C15B6/83 | ECU Malfunction (EEPROM) | Control is not started or stops |
| C15C1/74 | Steering Angle Sensor | Control is not started or stops |
| C15C2/74 | Steering Angle Sensor B+ | Control is not started or stops |
| C15C3/75 | Brake System Control Module | Returns the front relative angle and rear turning angle to the neutral position |
| C15C4/68 | Steering Signal Not Detected | - |
| C15C5/69 | Motor Rotation Signal Not Detected | - |
| C15C6/77 | IG Power Supply Voltage | Control is not started or stops |
| C15C7/78 | DC Motor Power Source Voltage | Control is not started or stops |
| C15C8/79 | Power Supply Relay Failure | Control is not started or stops |
| C15C9/76 | DRS System Malfunction | Returns the front relative angle and rear turning angle to the neutral position |
| C15CA/79 | EPS System Malfunction | Returns the front relative angle and rear turning angle to the neutral position |
| C15CB/84 | VSC System Malfunction | Returns the front relative angle and rear turning angle to the neutral position |
| U0100/56 | Lost Communication with ECM/PCM "A" | Control is not started |
| U0101/56 | Lost Communication with TCM | Returns the front relative angle and rear turning angle to the neutral position |
| U0125/56 | Lost Communication with Yaw Rate Sensor Module | Control is not started. |
| U0126/56 | Lost Communication with Steering Angle Sensor Module | Returns the front relative angle and rear turning angle to the neutral position |
| U0129/56 | Lost Communication with Brake System Control Module | Returns the front relative angle and rear turning angle to the neutral position |
| U0131/56 | Lost Communication with Power Steering Control Module | Returns the front relative angle and rear turning angle to the neutral position |
| U0134/56 | Lost Communication with DRS Module | Returns the front relative angle and rear turning angle to the neutral position |