| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM1000000026WVA |
| Model Year Start: 2023 | Model: RAV4 | Prod Date Range: [10/2022 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): Brake Hold Standby Indicator Light Circuit; 2023 - 2024 MY RAV4 RAV4 HV [10/2022 - ] | ||
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Brake Hold Standby Indicator Light Circuit |
DESCRIPTION
The brake hold standby indicator light turns on if brake hold control is possible when the following conditions required for operation standby are met and the brake hold switch (integration control and panel assembly) is pressed while the ignition switch ON.
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Conditions required for operation standby:
- The driver door is closed.
- The driver seat belt is fastened.
- The system is normal.
HINT:
If a malfunction occurs in one of the following systems, the brake hold operated indicator light will blink. If this occurs, perform troubleshooting on the malfunctioning system.
- Brake system
- Electric parking brake system
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
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1. |
PRE-CHECK |
(a) If the brake hold standby indicator light does not illuminate even though the brake hold switch (integration control and panel assembly) is pushed, check that the brake hold function operation conditions are met.
- The driver door is closed.
- The driver seat belt is fastened.
- The system is normal.
HINT:
If a malfunction occurs in one of the following systems, the brake hold operated indicator light will blink. If this occurs, perform troubleshooting on the malfunctioning system.
- Brake system
- Electric parking brake system
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2. |
READ VALUE USING TECHSTREAM (BRAKE HOLD READY) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Chassis / Brake/EPB / Data List.
Chassis > Brake/EPB > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Brake Hold Ready |
Brake hold control permission status |
Not in stand-by mode / Stand-by mode |
Not in stand-by mode: Brake hold function not operating (brake hold indicator not illuminated) Stand-by mode: Brake hold function stand-by state (brake hold indicator illuminated) |
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Chassis > Brake/EPB > Data List
|
Tester Display |
|---|
|
Brake Hold Ready |
(d) All of the following brake hold operation conditions are met:
- The driver door is closed.
- The driver seat belt is fastened.
(e) Check the brake hold standby indicator light and mode condition on the Techstream changes according to brake hold switch (integration control and panel assembly) operation.
Standard:
|
Brake Hold Switch (Integration Control and Panel Assembly) Operation |
Mode Condition Display |
Brake Hold Standby Indicator Light |
|---|---|---|
|
Not pressed |
Not in stand-by mode |
Does not come on |
|
Pressing the brake hold switch (integration control and panel assembly) |
Stand-by mode |
Come on |
|
Result |
Proceed to |
|---|---|
|
Indicator light and mode condition display do not change |
A |
|
Mode condition display is normal, but indicator light does not change |
B |
|
Indicator light and mode condition display are normal |
C |
| B |
|
| C |
|
|
|
3. |
INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY |
(a) Inspect the brake hold switch (integration control and panel assembly).
Click here
| NG |
|
|
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4. |
CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.
OK:
The connector is securely connected.
(b) Disconnect the A39 skid control ECU (brake actuator assembly) connector.
(c) Disconnect the G32 brake hold switch (integration control and panel assembly) connector.
(d) Check both the connector case and the terminal for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G32-24 (+B) - A39-42 (EXI3) |
Always |
Below 1 Ω |
|
G32-24 (+B) or A39-42 (EXI3) - Body ground |
Always |
10 kΩ or higher |
|
G32-15 (E) - Body ground |
Always |
Below 1 Ω |
| OK |
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REPLACE BRAKE ACTUATOR ASSEMBLY
|
| NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR |
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