Toyota Camry (XV70): Brake Actuator Operation Sound is Loud during Initial Check
CAUTION / NOTICE / HINT
NOTICE:
After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and system information memorization.
Click here .gif)
PROCEDURE
| 1. |
PERFORM ROAD TEST |
(a) After turning the ignition switch to ON, compare the operating sound of the brake actuator the first time the vehicle speed reaches 45 km/h (28 mph) with a known good vehicle of the same model.
OK:
The operating sound is the same or quieter than that of a known good vehicle of the same model.
HINT:
When the vehicle speed reaches approximately 40 km/h (25 mph), the initial check of the brake actuator assembly is performed and pump motor operation sounds are generated.
| OK | .gif) | END |
|
.gif)
| 2. |
CHECK BRAKE ACTUATOR BOLT CUSHION |
(a) Check that the cushion of the brake actuator bracket assembly is not worn, damaged or deformed.
OK:
The brake actuator bracket assembly is not worn, damaged or deformed.
| NG | | REPLACE BRAKE ACTUATOR BOLT CUSHION |
|
| 3. |
ADJUST INSTALLATION OF BRAKE ACTUATOR ASSEMBLY |
(a) Drain the brake fluid.
(b) Disconnect all brake lines from the brake actuator assembly.
Click here
(c) Connect each brake line so that the cushion of the brake actuator assembly is tensioned evenly.
Click here
NOTICE:
After connecting all the brake lines, add brake fluid and bleed the brake system.
Click here
HINT:
By reducing the tension on the brake lines and cushion, the operating sound of the brake actuator assembly may be reduced.
(d) Check that no brake lines interfere the vehicle body or other components.
|
| 4. |
RECHECK SYMPTOM |
(a) Perform a road test and check the magnitude of the operating sound again.
OK:
The operating sound is the same or quieter than that of a known good vehicle of the same model.
| OK | | END |
| NG | | REPLACE BRAKE ACTUATOR ASSEMBLY |
READ NEXT:
VSC OFF Switch Circuit
DESCRIPTION The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication.
Pressing the VSC OFF switch turns off TRAC operation, and pressing an
Components
COMPONENTS ILLUSTRATION
*1 COWL SIDE TRIM SUB-ASSEMBLY LH
*2 FRONT DOOR OPENING TRIM WEATHERSTRIP LH
*3 FRONT DOOR SCUFF PLATE LH
*4 HOOD LOCK CONTROL LEVER SUB-A
SEE MORE:
Diameter of the Tire is not Uniform (C1337)
DESCRIPTION The 4WD ECU assembly outputs this DTC if a difference in tire size is detected.
DTC No. Detection Item
DTC Detection Condition Trouble Area
C1337 Diameter of the Tire is not Uniform
When the following continues for 36 seconds or more: At a vehicle speed of
Heated steering wheel/seat heaters/seat ventilators
Heated steering wheel and seat heaters heat the side grips of the
steering wheel and seats, respectively. Seat ventilators maintain
good ventilation by pulling air through the seat upholstery.
WARNING
■To prevent minor burn injuries
Care should be taken to prevent injury if anyone in the foll
