Lexus ES: ABS Warning Light does not Come ON
DESCRIPTION
The skid control ECU (brake booster with master cylinder assembly) is connected to the combination meter assembly via CAN communication.
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 .gif)
PROCEDURE
| 1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication system DTCs are output.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not output. | A |
| DTCs are output. | B |
| B | .gif) | INSPECT CAN COMMUNICATION SYSTEM |
|
| 2. | PERFORM ACTIVE TEST USING TECHSTREAM (ABS WARNING LIGHT) |
(a) Select the Active Test on the Techstream.
Click here
| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| ABS Warning Light | ABS warning light | Warning light ON/OFF | Observe combination meter assembly |
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| ABS Warning Light | ABS warning light | ON or OFF | ON: Warning light on OFF: Warning light off | - |
| Active Test Display |
|---|
| ABS Warning Light |
| Data List Display |
|---|
| ABS Warning Light |
(b) Check the operating condition of the ABS warning light when operating it using the Techstream.
| Result | Proceed to |
|---|---|
| ABS warning light in the Data List does not change using the Active Test. | A |
| ABS warning light in the Data List turns ON/OFF using the Active Test. | B |
| A | | REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY |
|
| 3. | INSPECT COMBINATION METER ASSEMBLY |
(a) Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream.
Click here
| Tester Display |
|---|
| ABS Warning |
(b) Check the combination meter assembly.
OK:
The ABS warning light turns on or off in accordance with Techstream operation.
| OK | | REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY |
| NG | | INSPECT METER / GAUGE SYSTEM |
READ NEXT:
ABS Warning Light Remains ON
DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) is connected to the combination meter assembly via CAN communication. If any of the following is detected, the ABS warnin
Brake Actuator Operation Sound is Loud during Initial Check
CAUTION / NOTICE / HINT NOTICE: After replacing the brake actuator assembly, perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero p
Brake Control Warning Light does not Come ON
DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) is connected to the combination meter assembly via CAN communication. CAUTION / NOTICE / HINT NOTICE: After replacing the
SEE MORE:
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical > Road Sign Assist > Trouble Codes (e) Check for DTCs (Test Failed / Pending / Confirmed). Techstream Display D
Precaution
PRECAUTION CAUTION: While the auxiliary battery is connected, even if the power switch is off, the brake control system activates when the brake pedal is depressed or the door courtesy switch is turned on. Therefore during servicing of the brake system components, do not depress the brake pedal or o
