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Home >> Toyota >> 2007 >> Yaris Base, 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC P0724 Brake Switch "B" Circuit High >> Description

DTC P0724 Brake Switch "B" Circuit High: Description

The purpose of this circuit is to prevent the engine from stalling when brakes are suddenly applied while driving in lock-up condition.

When the brake pedal is depressed, this switch sends a signal to the ECM. Then the ECM cancels the operation of the lock-up clutch while braking is in progress.

DTC DETECTION CONDITIONS AND TROUBLE AREAS

DTC No. DTC Detection Conditions Trouble Areas
P0724 Stop light switch remains ON even when vehicle repeats 5 cycles of STOP (less than 1.86 mph (3 km/h)) and GO (18.65 mph (30 km/h) or more) (2 trip detection logic)
  • Short in stop light switch signal circuit
  • Stop light switch
  • ECM