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DTC P0724: Brake Switch "B" Circuit High: Description

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

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

DTC DETECTION CONDITIONS AND TROUBLE AREA REFERENCE

DTC No. DTC Detection Conditions Trouble Areas
P0724 The stop light switch remains ON even when the 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