DTC C1380-7E: Stop Lamp Relay Actuator Stuck On [11/2021 - ]: Description
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When any of the following conditions are met, the skid control ECU (brake actuator assembly) sets the drive output (STPO) ON which operates the semiconductor power integration ECU and turns on the stop lights.
Illumination Conditions:
- The lexus safety system is operating and is applying the brakes.
- Secondary collision brake is operating.
- Brake hold is operating.
- The parking brake is engaged while the vehicle is being driven.
- Downhill assist control is operating.*
- *: for AWD
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority |
|---|---|---|---|---|---|
| C1380-7E | Stop Lamp Relay Actuator Stuck On | When the voltage at the +BS terminal is between 10 V or more, the stop light drive output (STPO) is off, the signal at the STP2 terminal is different from the input signal at the STP terminal for 5 seconds or more. |
|
Brake/EPB | B |