DTC P0571-11: Brake Switch "A" Circuit Short to Ground [12/2019 - ]: Description
The skid control ECU (brake actuator assembly) inputs the stop light signal and brake operation condition.
When the brake pedal is depressed and the stop light switch signal is not input, this DTC is output.
| DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
| P0571-11 |
Brake Switch "A" Circuit Short to Ground |
Either of the following is detected:
- When the +BS terminal voltage is 9.5 V or higher and the brake pedal load sensing switch (brake pedal support assembly) is ON, the stop light switch signal is not input continuously for 2 seconds or more with the master cylinder pressure at 2 MPa (20.4 kgf/cm2
) or higher and the deceleration calculated from the vehicle speed at 0.2 G or higher.
- After a master cylinder pressure of more than 1.764 MPa (18.0 kgf/cm2
) is detected for 5 seconds or more continuously at a vehicle speed below 3 km/h (2 mph) with the stop light switch assembly off, the master cylinder pressure exceeds 1.764 MPa (18.0 kgf/cm2
) for 1 second or more continuously while and the stop light switch assembly signal is not received when the vehicle decelerates from over 35 km/h (22 mph) to 3 km/h (2 mph).
|
- Stop light switch assembly
- Wire harness and connector
- Brake pedal load sensing switch (brake pedal support assembly)
- Skid control ECU (brake actuator assembly)
|