| Components |

| 1. Brake booster 2. Master cylinder assembly | 3. O-ring |
Operation and Leakage Check Check all of the following items: ComponentProcedureBrake Booster (A)Check brake operation by applying the brakes during a test drive.
Brake Booster Operating Test For simple checking of the brake booster operation, carry out the following tests. 1. Run the engine for one or two minutes, and then stop it.
Inspection 1. Ignition "ON" 2. Using the scan tool. 3. Emit intensive light toward photo sensor using a lamp, and check the output voltage change. 4. The voltage will rise with higher intensive light and reduce with lower intensive light.
Inspection 1. Ignition "OFF” 2. Disconnect the connector of mode control actuator. 3. Verify that the mode control actuator operates to the defrost mode when connecting 12V to the terminal 3and grounding terminal 7. 4. Verify that the mode control actuator operates to the vent mode when connecting in the reverse.