| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM10000000214RJ |
| Model Year Start: 2022 | Model: RAV4 | Prod Date Range: [12/2021 - 10/2022] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): Brake Hold Standby Indicator Light Circuit; 2022 MY RAV4 RAV4 HV [12/2021 - 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 is turned to 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.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
After replacing the No. 2 skid control ECU (brake actuator assembly), perform "Calibration" after performing "Reset Memory".
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![2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o 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
- Hybrid control system
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2. |
READ VALUE USING GTS (BRAKE HOLD READY) |
(a) Check the brake hold standby indicator light and mode condition on the GTS changes according to brake hold switch (integration control and panel assembly) operation.
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 standby indicator light not illuminated) Stand-by mode: Brake hold function stand-by state (brake hold standby indicator light illuminated) |
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Chassis > Brake/EPB > Data List
|
Tester Display |
|---|
|
Brake Hold Ready |
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 |
Comes 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 |
|
|
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3. |
INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY |
(a) Turn the ignition switch off.
(b) Inspect the brake hold switch (integration control and panel assembly).
Click here
OK:
The brake hold switch (integration control and panel assembly) is normal.
| NG |
|
|
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4. |
CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - INTEGRATION CONTROL AND PANEL 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 A105 No. 2 skid control ECU (brake actuator assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A105-35 (BH) - G32-24 (SLT) |
Always |
Below 1 Ω |
|
A105-35 (BH) or G32-24 (SLT) - Body ground |
Always |
10 kΩ or higher |
|
G32-15 (E) - Body ground |
1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal |
Below 1 Ω |
| OK |
|
| NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR |
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