DTC C1B21: ECU Malfunction (CPU); DTC C1B22: ECU Malfunction (Internal Line); DTC C1B23: ECU Malfunction (Substrate Temperature Sensor); DTC C1B25: ECU Malfunction (Flash Memory) [09/2020 - ]: Description
When the DRS ECU (rear steering control ECU) detects an internal problem with the ECU, DTCs are stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Return-to-normal Condition |
|---|---|---|---|---|---|
| C1B21 | ECU Malfunction (CPU) | After the engine switch is turned on (IG), an internal problem with the ECU is detected. | DRS ECU (rear steering control ECU) | Comes on | Engine switch on (IG) again |
| C1B22 | ECU Malfunction (Internal Line) | After the engine switch is turned on (IG), an internal problem with the ECU is detected. | DRS ECU (rear steering control ECU) | Comes on | Engine switch on (IG) again |
| C1B23 | ECU Malfunction (Substrate Temperature Sensor) | After the engine switch is turned on (IG), an internal problem with the ECU is detected. | DRS ECU (rear steering control ECU) | - | Engine switch on (IG) again |
| C1B25 | ECU Malfunction (Flash Memory) | After the engine switch is turned on (IG), an internal problem with the ECU is detected. | DRS ECU (rear steering control ECU) | Comes on | Engine switch on (IG) again |