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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transmission Electronic Controlled (ECT) - U241E/U140F - Diagnostics) >> DTC P0724: Brake Switch "B" Circuit High >> Circuit Description

Circuit Description

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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.

Fig 1: DTC Trouble Area Chart
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