Advanced Hydraulic Booster
DTC 24: Brake Pedal Stroke Sensor Malfunction1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. With the ignition switch in ON (II), press the brake pedal several times.
4. Check for DTCs with the HDS.
Is DTC 24 indicated?
YES - Go to step 5.
NO - Intermittent failure, the system is OK at this time. Check for loose terminals at the brake pedal stroke sensor 3P connector and the servo unit 25P connector. Refer to intermittent failures troubleshooting.
5. Turn the ignition switch to LOCK (0).
6. Check the brake pedal stroke sensor and its connector for damage and proper installation.
Is the brake pedal stroke sensor installation OK?
YES - Go to step 7.
NO - Reinstall the brake pedal stroke sensor, and check the mounting position.
7. Disconnect the brake pedal stroke sensor 3P connector.
8. Disconnect the servo unit 25P connector.
9. Check for continuity between servo unit 25P connector terminals No. 2, No. 14, No. 18, and brake pedal stroke sensor 3P connector terminals No. 3, No. 2, No. 1 individually.
Is there continuity?
YES - Go to step 10.
NO - Repair open in the wire between the brake pedal stroke sensor and the servo unit.
10. Replace the brake pedal stroke sensor.
11. Turn the ignition switch to ON (II).
12. Clear the DTC with the HDS.
13. Turn the ignition switch to LOCK (0).
14. Turn the ignition switch to ON (II).
15. With the ignition switch in ON (II), press the brake pedal several times.
16. Check for DTCs with the HDS.
Is DTC 24 indicated?
YES - Replace the servo unit.
NO - The system is OK at this time.