DTC C1380-7E: Stop Lamp Relay Actuator Stuck On [08/2020 - ]: Description
When any of the following conditions are met, the skid control ECU (brake actuator assembly) sets the drive output (STPO) ON which operates the stop light control relay (stop light switch assembly) 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.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1380-7E | Stop Lamp Relay Actuator Stuck On | When the voltage at the +BS terminal is between 10 V or more and the stop light control relay (stop light switch assembly) 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. |
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