| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001HBK3 |
| Model Year Start: 2020 | Model: GR Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System): Slip Indicator Light Remains ON; 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2022] | ||
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Slip Indicator Light Remains ON |
DESCRIPTION
This procedure is for troubleshooting when the slip indicator light remains on but no DTCs are output.
The skid control ECU (brake actuator assembly) controls the slip indicator light in the combination meter assembly via CAN communication.
The slip indicator light blinks during VSC and/or TRAC operation.
If a malfunction is detected, the slip indicator light comes on to warn the driver.
CAUTION / NOTICE / HINT
NOTICE:
After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.
Click here
![2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 03/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System): UTILITY](/t3Portal/stylegraphics/info.gif)
PROCEDURE
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1. |
CHECK VEHICLE CONTROL HISTORY (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Chassis / Brake / Utility / Vehicle Control History (RoB).
(d) Using the Techstream, check for Vehicle Control History.
Click here
Chassis > Brake > Utility
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Tester Display |
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Vehicle Control History (RoB) |
HINT:
If vehicle control history is stored when the electronically controlled brake system is suspended, the slip indicator light illuminates.
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Result |
Proceed to |
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There is no vehicle control history for when the electronically controlled brake system was suspended. |
A |
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There is vehicle control history for when the electronically controlled brake system was suspended. |
B |
| B |
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PERFORM TROUBLESHOOTING AND REPAIR REGARDING VEHICLE CONTROL HISTORY Click here
NOTICE: After performing troubleshooting and repair regarding vehicle control history, clear the vehicle control history. |
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2. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(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
Body Electrical > Combination Meter > Active Test
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Tester Display |
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Slip Warning |
(e) Check the combination meter assembly.
OK:
The slip indicator light turns on or off in accordance with Techstream operation.
| OK |
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REPLACE BRAKE ACTUATOR ASSEMBLY
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| NG |
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