When I step on the brake pedal with the engine.

MIKEA3668

MEMBER
2007 TOYOTA COROLLA
135,000 MILES

When I step on the brake pedal with the engine off the dash board lights light up and the seat belt indicator buzzer sound When the engine is running it does not do that. The computer error # is PO 724

Sunday, December 16th, 2012 AT 3:27 PM

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

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.

MONITOR DESCRIPTION
This DTC indicates that the stop light switch remains on. When the stop light switch remains ON during "stop and go" driving, the ECM interprets this as a fault in the stop light switch and the MIL comes on and the ECM stores the DTC. The vehicle must stop(less than 3 km/h (2 mph)) and go (30 km/h (19 mph) or more) 5 times for two driving cycles in order to detect a malfunction.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

WIRING DIAGRAM

INSPECTION PROCEDURE

Step 1

Step 1(continued)-3

trying to retrieve the charts

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