DTC P0571-13: Brake Switch "A" Circuit Open [11/2018 - 12/2021]: Description
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When the brakes are applied by the dynamic radar cruise control system, the skid control ECU (brake booster with master cylinder assembly) operates the stop light control relay (stop light switch assembly) to illuminate the stop lights.
If the hybrid vehicle control ECU assembly receives a signal from the skid control ECU (brake booster with master cylinder assembly) indicating a malfunction of the stop light control relay, DTC P0571-13 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from |
|---|---|---|---|---|---|
| P0571-13 | Brake Switch "A" Circuit Open | When the dynamic radar cruise control system is operating, the hybrid vehicle control ECU assembly detects a signal indicating a stop light control relay malfunction from the skid control ECU (brake booster with master cylinder assembly) for approximately 1 second or more. | Electronically controlled brake system | Does not come on | Radar Cruise1 |