| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001HG9P |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [02/2019 - 12/2021] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): Brake Control Warning Light does not Come ON; 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021] | ||
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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:
When replacing the skid control ECU (brake booster with master cylinder assembly), perform initialization and calibration of the linear solenoid valve.
Click here
![2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): UTILITY](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE WARNING LIGHT / YELLOW (MINOR MALFUNCTION)) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Select the Active Test on the Techstream.
Click here
Chassis > ABS/VSC/TRAC > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
ECB Warning Light |
Brake warning light / yellow (minor malfunction) |
Warning light ON/OFF |
|
(d) Select the Data List on the Techstream.
Click here
Chassis > ABS/VSC/TRAC > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
ECB Warning Light |
Brake warning light / yellow (minor malfunction) |
ON or OFF |
ON: Warning light on OFF: Warning light off |
ECB: Electronically Controlled Brake System |
Chassis > ABS/VSC/TRAC > Active Test
|
Active Test Display |
|---|
|
ECB Warning Light |
|
Data List Display |
|---|
|
ECB Warning Light |
(e) Check the operating condition of the brake warning light / yellow (minor malfunction) when operating it using the Techstream.
|
Result |
Proceed to |
|---|---|
|
Brake warning light / yellow (minor malfunction) in the Data List does not change using the Active Test. |
A |
|
Brake warning light / yellow (minor malfunction) in the Data List turns ON/OFF using the Active Test. |
B |
| A |
|
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY
|
|
|
2. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Turn the ignition switch off.
(b) Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream.
Click here
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
ECB Warning |
(c) Check the combination meter assembly.
OK:
The brake warning light / yellow (minor malfunction) turns on or off in accordance with the Techstream operation.
| OK |
|
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY
|
| NG |
|
|
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