P0724

DTC P0724 BRAKE SWITCH "B" CIRCUIT HIGH

CIRCUIT DESCRIPTION

DTC Detection Condition:

The purpose of this circuit is to prevent the engine from stalling when, while driving in lock-up condition, the brakes are suddenly applied.

When the brake pedal is depressed (stop lamp switch is ON), the brake switch sends a signal to the ECM. Then the ECM cancels the operation of the lock-up clutch while the brakes are depressed.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

When the vehicle speed changes from 30 km/h (18.63 mph) or more to less than 3 km/h (1.86 mph) (GO and STOP), the stop lamp switch may remain ON. If so, the ECM will illuminate the MIL and store the DTC. The DTC is stored only when the GO and STOP (as a set) is performed 5 times per drive cycle over 2 consecutive drive cycles.

Wiring Diagram Part 1:

Wiring Diagram Part 2:

Step 1 - 2:

INSPECTION PROCEDURE

HINT: Performing the hand-held tester's ACTIVE TEST allows relay, Vacuum Switching Valve (VSV), actuator and other items to be operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way to save time.The DATA LIST can be displayed during the ACTIVE TEST.

a. Turn the ignition switch OFF.
b. Connect the hand-held tester to the DLC3.
c. Turn the ignition switch ON and push the tester main switch ON.
d. Enter the following menus: DIAGNOSIS/ENHANCED OBD II/DATA LIST.
e. Follow the instructions on the tester and read the DATA LIST.