P0724
DTC P0724 Brake Switch "B" Circuit HighP0724:
DESCRIPTION
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.
MONITOR DESCRIPTION
The circuit prevents the engine from stopping when the vehicle is stopped by sudden braking when the torque converter clutch is in the "lock-up" mode. The ECM receives the signal from the stop light switch when the brake pedal is depressed. Then, the ECM sends a signal to the lock-up solenoid valve to turn lock-up off.
This DTC indicates that the stop light switch remains ON. When the stop light switch remains ON during GO and STOP driving, the ECM interprets this as a fault in the stop light switch. Then the MIL illuminates and the ECM stores the DTC. The vehicle must GO (30 km/h (18.65 mph) or more) and STOP (less than 3 km/h (1.86 mph)) 5 times for 2 driving cycles in order for the DTC to be output.
MONITOR STRATEGY:
MONITOR STRATEGY
MONITOR STRATEGY:
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS:
TYPICAL MALFUNCTION THRESHOLDS
WIRING DIAGRAM:
WIRING DIAGRAM
