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DTC P0724 Brake Switch "B" Circuit High: Description

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

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

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 CONDITION

DTC No. DTC Detection Condition Trouble Area
P0724  Stop light switch remains ON even when vehicle is driven in GO (30 km/h (18.63 mph) or more) and STOP (less than 3 km/h (1.86 mph)) pattern 5 times (2 trip detection logic)
  • Short in stop light switch signal circuit
  • Stop light switch
  • ECM