Troubleshooting

DTC P0724 Brake Switch "B" Circuit High

CIRCUIT DESCRIPTION

DTC Detecting Condition:

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 signal to ECM. Then the ECM cancels operation of the lock up clutch while braking is in progress.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

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 and go (3 km/h (2 mph) to 30 km/h (19 mph)) ten times for two driving cycles in order to detect malfunction.

Wiring Diagram:

Step 1 - 2:

INSPECTION PROCEDURE