Tacoma 4WD V6-4.0L (1GR-FE) (2006)
Hydraulic Control Assembly - Antilock Brakes: Testing and Inspection
BRAKE ACTUATOR (w/o VSC)
ON-VEHICLE INSPECTION
1. CONNECT INTELLIGENT TESTER
a. Connect the intelligent tester to the DLC3.
b. Start the engine and allow it to idle.
c. Select ACTIVE TEST mode on the intelligent tester.
HINT: Refer to the intelligent tester operator 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 OFF.
c. Depress the brake pedal and hold it for about 15 seconds. Check that the brake pedal cannot be depressed.
d. With the motor relay ON, check that the pedal does not pulsate.
NOTE: Do not keep the motor relay ON for more than 5 seconds continuously. When operating it continuously, allow intervals of more than
20 seconds.
e. Turn the motor relay OFF and release the brake pedal.
3. INSPECT RIGHT FRONT WHEEL OPERATION
NOTE: Never turn ON any solenoids other than those described below.
a. With the brake pedal depressed, perform the following operations.
b. Turn SFRH and SFRR solenoids ON simultaneously, and check that the pedal cannot be depressed.
NOTE: Do not keep the solenoids ON for more than 2 seconds continuously. When operating them continuously, allow intervals of more
than 20 seconds.
c. Turn SFRH and SFRR solenoids OFF simultaneously, and check that the pedal can be depressed.
d. Turn the motor relay ON, and check that the pedal returns.
NOTE: Do not keep the motor relay ON for more than 5 seconds continuously. When operating it continuously, allow intervals of more than
20 seconds.
e. Turn the motor relay OFF and release the brake pedal.
4. INSPECT OTHER WHEEL OPERATION
a. Check the solenoids of the other wheels using the same procedures.
HINT:
Left front wheel: SFLH, SFLR
Right rear wheel: SRRH, SRRR
Left rear wheel: SRLH, SRLR