Toyota Corolla 2004 Repair Manual - BRAKE ACTUATOR ASSY

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–BRAKE BRAKE ACTUATOR ASSY

BRAKE ACTUATOR ASSY

320IO–01

ON–VEHICLE INSPECTION

1. CONNECT HAND–HELD TESTER:

(a) Connect the hand–held tester to the DLC3.
(b) Start the engine and run it at idle.
(c) Select the ACTIVE TEST mode on the hand–held tester.
HINT:
Please refer to the hand–held tester operator’s manual for further details.

2. INSPECT ACTUATOR MOTOR OPERATION

(a) With the motor relay ON, check the actuator motor operation noise.
(b) Turn the motor relay to OFF.
(c) Depress the brake pedal and hold it for about 15 seconds. Check that the brake pedal cannot be de-

pressed.

(d) With the motor relay ON, check that the pedal does not pulsate.

NOTICE:
Do not keep motor relay ON for more than 5 seconds continuously. When operating it continuously,
set the interval more than 20 seconds.

(e) Turn the motor relay to OFF and release the brake pedal.

3. INSPECT RIGHT FRONT WHEEL OPERATION
NOTICE:
Never turn ON the solenoid which is not described below.

(a) With the brake pedal depressed, perform the following operations.
(b) Turn the SFRH and SFRR solenoid to ON simultaneously, and check that the pedal cannot be de-

pressed.

NOTICE:
Do not keep solenoid ON for more than 10 seconds continuously. When operating it continuously,
set the interval more than 20 seconds.

(c) Turn the SFRH and SFRR solenoid to OFF simultaneously, and check that the pedal can be de-

pressed.

(d) Turn the motor relay to ON, and check that the pedal returns.

NOTICE:
Do not keep motor relay ON for more than 5 seconds continuously. When operating it continuously,
set the interval more than 20 seconds.

(e) Turn the motor relay to OFF and release the brake pedal.

4. INSPECT OTHER WHEEL OPERATION

(a) As the same procedure, check the solenoids of other wheels.
HINT:
Left front wheel: SFLH, SFLR
Right rear wheel: SRRH, SRRR
Left rear wheel: SRLH, SRLR

2004 COROLLA (RM1037U)

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