Buzzer Sounds Continually

Advanced Hydraulic Booster Symptom Troubleshooting - Buzzer sounds continually

Buzzer sounds continually

NOTE: Check for advanced hydraulic booster DTCs before doing this troubleshooting. If any DTCs are present, troubleshoot them first.

1. Turn the ignition switch to LOCK (0).

2. Disconnect the buzzer 2P connector Service and Repair.

3. Disconnect the servo unit 25P connector.

4. Turn the ignition switch to ON (II).

5. Check for continuity between buzzer 2P connector terminal No. 1 and body ground.





Is there continuity?

YES -

Repair a short to body ground in the wire between the buzzer and body ground.�

NO -

Go to step 6.

6. Turn the ignition switch to LOCK (0).

7. Connect the buzzer 2P connector.

8. Turn the ignition switch to ON (II).

Does the buzzer sound?

YES -

Replace the buzzer Service and Repair.�

NO -

Replace the servo unit Service and Repair.�