| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001HGA1 |
| 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): VSC OFF Switch Circuit; 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021] | ||
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VSC OFF Switch Circuit |
DESCRIPTION
The skid control ECU assembly is connected to the combination meter assembly via CAN communication.
Pressing the VSC OFF switch turns off TRC (TRAC) operation, and pressing and holding this switch turns off TRC (TRAC) and VSC operation. If TRC (TRAC) and VSC operations are turned off, the TRC (TRAC) OFF message will be displayed on the multi-information display and the VSC OFF indicator light will come on.
WIRING DIAGRAM
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.
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![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. |
READ VALUE USING TECHSTREAM (TRC (TRAC)/VSC OFF MODE) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Select the Data List on the Techstream.
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Chassis > ABS/VSC/TRAC > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
TRAC/VSC Off Mode |
TRC (TRAC)/VSC off mode |
Normal, TRC OFF or VSC OFF |
Normal: Normal mode TRC OFF: TRC (TRAC) off mode VSC OFF: VSC off mode |
- |
Chassis > ABS/VSC/TRAC > Data List
|
Tester Display |
|---|
|
TRAC/VSC Off Mode |
(d) Check the indicator light and mode condition on the Techstream changes according to VSC OFF Switch operation.
Standard:
|
Switch Operation |
Mode Condition Display |
Multi-information Display (TRC (TRAC) OFF Message) |
VSC OFF Indicator Light |
|---|---|---|---|
|
Not pressed |
Normal |
Not displayed |
Does not come on |
|
Pressing the VSC OFF switch |
TRC (TRAC) OFF |
Displayed |
Does not come on |
|
Pressing and holding the VSC OFF switch |
VSC OFF |
Displayed |
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 is normal. |
C |
| B |
|
| C |
|
|
|
2. |
INSPECT VSC OFF SWITCH |
(a) Turn the ignition switch off.
(b) Remove the VSC OFF switch.
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(c) Inspect the VSC OFF switch.
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OK:
The VSC OFF switch operates normally.
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - VSC OFF SWITCH) |
(a) Disconnect the A42 skid control ECU (brake booster with master cylinder assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A42-8 (CSW) - G36-5 (+) |
Always |
Below 1 Ω |
|
A42-8 (CSW) or G36-5 (+) - Body ground |
Always |
10 kΩ or higher |
|
G36-2 (E) - Body ground |
Always |
Below 1 Ω |
HINT:
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step.
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| OK |
|
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
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