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