DTC C1380-7E: Stop Lamp Relay Actuator Stuck On [11/2021 - 10/2023]: Description
When any of the following conditions are met, the No. 2 skid control ECU (brake actuator assembly) sets the drive output (STPO) ON which operates the stop light control relay (No. 3 semiconductor power integration ECU) and turns on the stop lights.
Illumination Conditions:
- Pre-collision brake is operating.
- The dynamic radar cruise control 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.
- Advanced park is operating
- Advanced drive is operating
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Note |
|---|---|---|---|---|---|
| C1380-7E | Stop Lamp Relay Actuator Stuck On | When the IG1 terminal voltage exceeds 10 V and the +BS terminal voltage is 9.5 V or higher, stop light drive output (STPO) is OFF, STP is OFF and STP2 is ON continuously for 5 seconds or more. |
|
Does not come on | Output ECU: No. 2 skid control ECU (brake actuator assembly) |