Toyota CH-R Service Manual: Parking Brake System

Toyota CH-R Service Manual / Parking Brake / Parking Brake System

Precaution

PRECAUTION

IGNITION SWITCH EXPRESSIONS

(a) The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this section.

Expression

Ignition Switch (Position)

Engine Switch (Condition)

Ignition Switch off

LOCK

Off (Lock)

Ignition Switch ACC

ACC

On (ACC)

Ignition Switch ON

ON

On (IG)

Engine Start

START

On (Start)

NOTICE:

  • If the battery is connected, the parking brake will operate when the electric parking brake switch assembly is pulled to the lock side even if the engine switch is off, Do not operate the electric parking brake switch assembly with the battery connected unless specified in the repair manual.
  • To prevent the electric parking brake system from operating when the shift lever is moved, make sure that AUTO function (shift-linked function) is off.

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  • After the ignition switch off, the parking brake ECU assembly (brake actuator assembly) and parking brake actuator assembly continue operating for 20 seconds. If a connector is disconnected during this period, a DTC may be stored.
  • If any part is removed and installed, check for DTCs to make sure that the normal system code is output after all parts are installed.

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  • Replacing a part with an incorrect part may affect the performance of the brake system or lead to a hazardous situation. When replacing a part, always use a part with the same part number or equivalent.
  • When servicing the brake system, keep the parts and areas around the parts clean.
  • If the vehicle is equipped with a mobile communication system, read the precautions of Introduction section.

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  • When tilting the vehicle to perform work after parking the vehicle on a level surface, the braking force of the parking brake may not be sufficient. Make sure to pull the electric parking brake switch assembly to the lock side 2 times (2 lock operations).

    HINT:

    • The electric parking brake system determines the amount of force used to operate the parking brake according to the tilt angle detected by the deceleration sensor (airbag sensor assembly).
    • When the electric parking brake switch assembly is pulled to the lock side 2 times (2 lock operations), the maximum amount of braking force is applied.

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Parking Brake System

Symptom

Suspected Area

Link

Brake drag

Electric parking brake actuator assembly
    Operation Method
    OPERATION METHOD PROCEDURE 1. PRECAUTION Click here 2. REMOVE BENCH TYPE REAR SEAT CUSHION ASSEMBLY Click here 3. DISCONNECT REAR DOOR OPENING TRIM WEATHERSTRIP LH Click here 4. DI ...

    Axle And Differential
    ...

    Other materials:

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