Power Steering System
DTC P0724 Brake Switch "B" Circuit HighDESCRIPTION
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 TCM. Then the TCM cancels the operation of the lock-up clutch while braking is in progress.
P0724:
MONITOR DESCRIPTION
This DTC indicates that the stop light switch remains ON. When the stop light switch remains ON during GO and STOP driving, the TCM interprets this as a fault in the stop light switch. Then the MIL illuminates and the TCM stores the DTC. The vehicle must GO (30 km/h (18.63 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
TYPICAL ENABLING CONDITIONS
The stop light switch remains on during GO and STOP 5 times.
GO and STOP are defined as follows:
TYPICAL MALFUNCTION THRESHOLDS
WIRING DIAGRAM:
INSPECTION PROCEDURE
HINT: Using the intelligent tester or Techstream DATA LIST allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the DATA LIST early in troubleshooting is one way to save time.
NOTICE: In the table, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
1. Warm up the engine.
2. Turn the engine switch off.
3. Connect the intelligent tester or Techstream to the DLC3.
4. Turn the engine switch on (IG).
5. Turn the tester ON.
6. Enter the following menus:
Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / ECT / DATA LIST.
Techstream - Select: Powertrain / ECT / Data List.
7. Follow the instructions on the tester and read the DATA LIST.
Intelligent tester
TCM:
Techstream
TCM:
Steps 1-2:
