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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (Except HV) - Diagnostic Codes (1 Of 3) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model) >> DTC C0040-13: Brake Pedal Switch "A" Circuit Open [12/2019 - ] >> Description

DTC C0040-13: Brake Pedal Switch "A" Circuit Open [12/2019 - ]: Description

The brake pedal load sensing switch (brake pedal support assembly) signal turns on when the brake pedal is depressed with a force exceeding a predetermined level.

The skid control ECU (brake actuator assembly) uses this circuit to detect if the brake pedal is depressed or not.

DTC No. Detection Item DTC Detection Condition Trouble Area
C0040-13 Brake Pedal Switch "A" Circuit Open When the +BS terminal voltage is from 9.5 to 17.4 V, an open or short in the brake pedal load sensing switch (brake pedal support assembly) continues for 0.3 seconds or more.
  • Brake pedal load sensing switch (brake pedal support assembly)
  • Wire harness and connector
  • Skid control ECU (brake actuator assembly)