Toyota Corolla (E120): Circuit description

This solenoid goes on when signals are received from the ecu and controls the pressure acting on the wheel cylinders thus controlling the braking force.

Wiring diagram

Wiring diagram

Inspection procedure

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    On–vehicle inspection
    1. Inspect brake booster Airtightness check.  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. ...

    Power point socket assy
    Replacement Hint: components: 1. Remove floor shift shift lever knob sub–assy (m/t transaxle) 2. Remove console panel upper 3. Remove power point socket assy Turn the socket in the circumference direction as shown the illustration, disengage the claw between the socket and the pow ...

    Inspection procedure
    Hint: if different dtcs related to different systems that have terminal e2 as the ground terminal are output simultaneously, terminal e2 may be open. Read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malf ...