DTC P0571 Stop Light Switch Circuit Malfunction: Description
The hybrid vehicle control ECU receives the brake demand signal from the distance control ECU (cruise control ECU) and transmits it to the skid control ECU.
The skid control ECU receives a signal from the hybrid vehicle control ECU and operates the brake actuator.
The skid control ECU operates the brake actuator and illuminates the stop light by operating the BRK relay at the same time.
DTC TROUBLE DETECTION CHART
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0571 | This trouble code is output when the hybrid vehicle control ECU detects the BRK relay error signal from the skid control ECU for 0.2 sec. or more while the dynamic cruise control is in operation. |
|