What is a brake switch B circuit?

The brake switch B circuit allows the cruise control system to be disengaged by tapping the brake pedal, as well as ensuring that the torque converter lock-up system disengages when coming to a stop.

What is a torque converter brake switch?

The brake switch B circuit is part of the torque converter clutch system. This indicates the status of the brake pedal, and works as part of the system that deactivates the torque converter lock-up and cruise control.

What does brake switch a circuit low mean?

OBD-II Code Cruise control will not operate is defined as a Brake Switch “A” Circuit Low. The Brake Switch tells the engine control module (PCM) that the brake pedal is depressed. This switch also controls the brake lights.

What does the p0724 code on a torque converter mean?

If you discover that a code P0724 has been stored in your OBD-II vehicle, it means that the powertrain control module (PCM) has detected a high electrial condition in a certain torque converter brake switch circuit. This code is applicable to vehicles equipped with automatic transmissions only.

What does the p0724 code on a Dodge Ram mean?

The P0724 code pertains to one of these brake switch circuits. Consult your vehicle service manual or service site such as AllDataDIY for specific information about this particular circuit as it relates to your vehicle.

What happens to the torque converter when the car stops?

When the vehicle comes to a stop (with the engine idling) the torque converter absorbs the torque of the engine, using a complex system of wet clutches. This allows the engine to idle without stalling.

How does a lock up torque converter work?

Torque converter lockup is achieved using an electronic solenoid that controls a spring loaded rod or ball valve. When the PCM recognizes that conditions are correct, the lockup solenoid is activated and the valve allows fluid to bypass the torque converter (gradually) and be applied directly to the valve body.