DTC P0571 Stop Light Switch Circuit Malfunction: Description
The ECM receives the brake demand signal from the distance control ECU and transmits these to the skid control ECU (Brake actuator assembly).
The skid control ECU (Brake actuator assembly) receives a signal from ECM and operate the brake actuator.
The skid control ECU (Brake actuator assembly) operates the brake actuator and illuminates the stop lamp by operating the BRK relay at the same time.
STOP LIGHT SWITCH CIRCUIT MALFUNCTION
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0571 | The malfunction code is output when the ECM detected the BRK relay error signal from the skid control ECU for 0.2 sec. or more while the dynamic cruise control is in operation. |
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