| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001AZ92 |
| Model Year Start: 2019 | Model: Avalon | Prod Date Range: [04/2018 - 08/2021] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): Brake Warning Light does not Come ON; 2019 - 2021 MY Avalon [04/2018 - 08/2021] | ||
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Brake Warning Light does not Come ON |
DESCRIPTION
The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication.
CAUTION / NOTICE / HINT
NOTICE:
-
When replacing the skid control ECU (brake actuator assembly), perform system variant learning and acceleration zero point calibration.
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![2019 - 2021 MY Avalon [04/2018 - 08/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): CALIBRATION](/t3Portal/stylegraphics/info.gif)
- Inspect the fuses for circuits related to this system before performing the following procedure.
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 |
|
|
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE WARNING LIGHT) |
(a) Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Active Test.
Chassis > ABS/VSC/TRAC/EPB > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Brake Warning Light |
Brake system warning light (red indicator) |
Warning light OFF/ON |
Observe combination meter assembly |
Chassis > ABS/VSC/TRAC/EPB > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Brake Warning Light |
Brake system warning light (red indicator) |
ON or OFF |
ON: Warning light on OFF: Warning light off |
- |
Chassis > ABS/VSC/TRAC/EPB > Active Test
|
Active Test Display |
|---|
|
Brake Warning Light |
|
Data List Display |
|---|
|
Brake Warning Light |
(b) Check the operating condition of the brake system warning light (red indicator) when operating it using the Techstream.
|
Result |
Proceed to |
|---|---|
|
Brake warning light in the Data List does not change using the Active Test |
A |
|
Brake warning light in the Data List turns ON/OFF using the Active Test |
B |
| A |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
|
|
3. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(b) Perform the Active Test of the combination meter assembly using the Techstream.
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Brake Warning |
(c) Check the combination meter assembly.
OK:
The brake system warning light (red indicator) turns on or off in accordance with Techstream operation.
| OK |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
| NG |
|
|
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