Lexus ES: Brake Warning Light does not Come ON
DESCRIPTION
The skid control ECU (brake actuator assembly) controls the brake warning light / red (malfunction) in the combination meter assembly via CAN communication.
CAUTION / NOTICE / HINT
NOTICE:
After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.
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PROCEDURE
| 1. | INSPECT COMBINATION METER ASSEMBLY |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(d) Perform the Active Test of the combination meter assembly using the Techstream.
Click here
| Tester Display |
|---|
| Brake Warning |
(e) Check the combination meter assembly.
OK:
The brake warning light / red (malfunction) turns on or off in accordance with Techstream operation.
| OK |  | REPLACE BRAKE ACTUATOR ASSEMBLY |
| NG | | INSPECT METER / GAUGE SYSTEM |
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SEE MORE:
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA HINT:
When a DTC is stored, the freeze frame data stores the current vehicle (sensor) state as.
The freeze frame data cannot be cleared or updated until the recorded DTCs are cleared.
(a) Using the Techstream, the state of the vehicle (sensors) when the sy
Reassembly
REASSEMBLY PROCEDURE 1. CLEAN VACUUM PUMP HOUSING (a) Clean the inside surface of the vacuum pump housing. 2. INSTALL VACUUM PUMP ROTOR (a) Clean the vacuum pump rotor. (b) Apply engine oil to the areas of the vacuum pump rotor shown in the illustration. Engine Oil (c) Install the vacuum p
