| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001EV4G |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 10/2022] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): Downhill Assist Control Indicator Light does not Come ON; 2019 - 2022 MY RAV4 RAV4 HV [11/2018 - 10/2022] | ||
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Downhill Assist Control Indicator Light does not Come ON |
DESCRIPTION
Even if the downhill assist control switch is pressed, the downhill assist control indicator light blinks and downhill assist control does not activate under the following conditions:
- 1st gear of S mode or not R.
- The vehicle speed is 25 km/h (16 mph) or more.
- The brake system is malfunctioning.
- Temperature of the brake actuator assembly increases and the downhill assist control is temporarily canceled.
WIRING DIAGRAM
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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![2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): UTILITY](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY |
(a) Turn the ignition switch off.
(b) Remove the downhill assist control switch (integration control and panel assembly).
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(c) Inspect the downhill assist control switch (integration control and panel assembly).
Click here
OK:
The downhill assist control switch operates normally.
| NG |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - INTEGRATION CONTROL AND PANEL ASSEMBLY) |
(a) Disconnect the A39 skid control ECU (brake actuator assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A39-8 (HDCS) - G32-19 (B) |
Always |
Below 1 Ω |
|
A39-8 (HDCS) or G32-19 (B) - Body ground |
Always |
10 kΩ or higher |
|
G32-16 (E) - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Turn the ignition switch off.
(b) Perform Active Test of the combination meter assembly using the Techstream.
Click here
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Downhill Assist Control Indicator |
(c) Check the combination meter assembly.
OK:
The Downhill assist control indicator light turns on or off in accordance with the Techstream.
| OK |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
| NG |
|
|
|