DESCRIPTION
MONITOR DESCRIPTION When the power switch is on (IG) and the fluid level warning switch (brake booster with master cylinder assembly) is on for a certain amount of time, the skid control ECU (brake booster with master cylinder assembly) judges that the brake fluid level in the reservoir is low and illuminates the MIL and stores this DTC. MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
COMPONENT OPERATING RANGE
CONFIRMATION DRIVING PATTERN
WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: After replacing the skid control ECU (brake booster with master cylinder assembly), perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory". Click here PROCEDURE
(a) Clear the DTCs. Click here Chassis > ABS/VSC/TRAC > Clear DTCs(b) Turn the power switch off. (c) Turn the power switch on (IG). (d) Check if the same DTC is output. Click here Chassis > ABS/VSC/TRAC > Trouble Codes
(a) Check that the brake fluid level is sufficient. HINT: If the fluid level is low, check for fluid leaks, and repair as necessary. (1) Check for brake fluid leaks (connection between the brake booster pump assembly, brake master cylinder reservoir assembly (brake booster with master cylinder assembly), brake booster with master cylinder assembly, and wheel cylinders). HINT: If no leaks exist, add and adjust fluid using the Techstream. Click here (2) Check the thickness of the brake pad lining. for Front Brake: Click here for Rear Brake: Click here HINT: If the thickness is less than the standard, replace the brake pads with new ones. (b) Check that there are no leaks from the connections between the brake booster pump assembly and brake booster with master cylinder assembly. HINT: As a visual check is very difficult, perform the check with the following procedure. (1) Bleed the air from the brake system. Click here (2) Turn the power switch off. (3) Disconnect the A34 brake pedal stroke sensor assembly connector. (4) Select the Data List on the Techstream. Click here Chassis > ABS/VSC/TRAC > Data List
(5) Depress the brake pedal several times to operate the pump motor, then wait until it stops. (6) After the pump motor stops, wait for 30 seconds, then check the drop in the accumulator pressure sensor output value and the state of the pump motor.
(b) Reconnect the A34 brake pedal stroke sensor assembly connector. (c) Remove the brake master cylinder reservoir filler cap assembly. (d) Make sure that there is no looseness at the locking part and the connecting part of the connector. OK: The connector is securely connected. (e) Disconnect the A4 brake fluid level warning switch (brake booster with master cylinder assembly) connector. (f) Check both the connector case and the terminals for deformation and corrosion. OK: No deformation or corrosion. (g) Measure the resistance according to the value(s) in the table below. HINT: A float is located inside the brake master cylinder reservoir assembly (brake booster with master cylinder assembly). Its position changes according to the level of brake fluid. Standard Resistance:
(h) If there are no problems after completing the preceding inspection, adjust the brake fluid to the MAX level with the power switch on (IG).
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector. OK: The connector is securely connected. (b) Disconnect the A35 skid control ECU (brake booster with master cylinder assembly) connector. (c) Check both the connector case and the terminals for deformation and corrosion. OK: No deformation or corrosion. (d) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(b) Turn the power switch on (IG). (c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
(a) Turn the power switch off. (b) Reconnect the A4 brake fluid level warning switch (brake booster with master cylinder assembly) connector. (c) Clear the DTCs. Click here Chassis > ABS/VSC/TRAC > Clear DTCs(d) Turn the power switch off. (e) Turn the power switch on (READY). (f) Perform a road test. (g) Check if the same DTC is output. Click here Chassis > ABS/VSC/TRAC > Trouble Codes
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Front Power Seat Control System(for Gasoline Model With Memory): Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Driver Seat / Trouble Codes. Body Electrical > Driver Seat > Trouble Codes (e) Check for DTCs. CLEAR DTC (a) Conn ...