Toyota Corolla (E120): On–vehicle inspection

1. Inspect brake booster

  1. Airtightness check.
  1.  Start the engine and stop it after 1 or 2 minutes. Depress the brake pedal several times slowly.

    Hint

    : if the pedal goes down farthest at the 1st time, but gradually rises after the 2nd or 3rd time, the booster is airtight.

  2.  Depress the brake pedal while the engine is running, and stop the engine with the pedal depressed.

    Hint

    : if there is no change in the pedal reserve distance after holding the pedal for 30 seconds, the booster is airtight.

  1. Operating check.
  1.  Depress the brake pedal several times with the ignition switch off and check that there is no change in the pedal reserve distance.
  2.  Depress the brake pedal and start the engine.

    Hint

    : if the pedal goes down slightly, operation is normal.

2. Inspect vacuum check valve

  1.  check vacuum check valve.
  1. Slide the clip and disconnect the vacuum hose.
  2. Remove the vacuum check valve.

  1. Check that there is ventilation from the booster to engine, and no ventilation from the engine to the booster.
  2.  If any fault is found, replace the vacuum check valve.
    Share this page:

    Other materials:

    Data list/active test
    1. Data list Hint: according to the data list displayed by the obd ii scan tool or hand–held tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the data list as the first step of troubleshooting is one method to shorten labor time. W ...

    PDA (Proactive driving assist)
    When a detectable object is detected, the proactive driving assist operates the brakes and steering wheel to help prevent the vehicle from approaching too close to the object. WARNING ■For safe use Driving safely is solely the responsibility of the driver. The proactive driving assist is design ...

    Antenna cord sub–assy
    Replacement Hint: components: 1. Remove instrument panel sub–assy upper Hint: refer to the procedure until the step, ”remove instrument panel sub–assy upper” of instrument panel sub–assy lower. Remove the related parts as long as the antenna cord sub–assy can be removed ...