DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 65 (Electronically Controlled Brake System (HV) - Diagnostic Codes (10 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC P0571-00: Brake Switch "A" [12/2019 - ] >> Description

DTC P0571-00: Brake Switch "A" [12/2019 - ]: Description

WARNING: This page is about a different variant/trim than selected.

The No. 1 skid control ECU (brake booster with master cylinder assembly) detects the brake operating conditions through a signal transmitted by the stop light switch assembly.

The No. 1 skid control ECU (brake booster with master cylinder assembly) incorporates a circuit to detect an open circuit. This DTC is output when an open circuit is detected in the stop light signal input line.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
P0571-00 Brake Switch "A" An open in the stop light switch circuit continues for 10 seconds or more.
  • Wire harness and connector
  • Stop light switch assembly
  • STP circuit
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
Does not come on Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly)