VSC OFF Switch Circuit [03/2024 - ]: Procedure
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- READ VALUE USING GTS (TRC (TRAC)/VSC OFF MODE)
- Check the indicator light and mode condition on the GTS changes according to VSC OFF switch (electric parking brake switch assembly) operation.
Chassis > Brake/EPB > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note TRC (TRAC)/VSC OFF Mode TRAC/VSC off mode Normal mode (TRC (TRAC) ON/VSC ON) / TRC (TRAC) OFF mode (TRC (TRAC) OFF/VSC ON) / VSC expert mode (VSC expert mode MID ON) / VSC OFF mode (TRC (TRAC) OFF/VSC OFF) Normal mode (TRC (TRAC) ON/VSC ON): Normal mode
TRC (TRAC) OFF mode (TRC (TRAC) OFF/VSC ON): TRAC off mode
VSC expert mode (VSC expert mode MID ON): VSC expert mode
VSC OFF mode (TRC (TRAC) OFF/VSC OFF): VSC off mode- Chassis > Brake/EPB > Data List
Tester Display TRC (TRAC)/VSC OFF Mode Standard
Switch Operation Mode Condition Display Multi-information Display ("Traction Control Turned Off") VSC OFF Indicator Light Not pressed Normal mode (TRC (TRAC) ON/VSC ON) Not displayed Does not come on Pressing the VSC OFF switch (electric parking brake switch assembly) TRC (TRAC) OFF mode (TRC (TRAC) OFF/VSC ON) Displayed Does not come on Pressing and holding the VSC OFF switch (electric parking brake switch assembly) VSC OFF mode (TRC (TRAC) OFF/VSC OFF) Displayed Comes on Result
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
Result:
B
INSPECT METER / GAUGE SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]
Result:
C
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]
Result:
A
See step 2
- Check the indicator light and mode condition on the GTS changes according to VSC OFF switch (electric parking brake switch assembly) operation.
- INSPECT ELECTRIC PARKING BRAKE SWITCH ASSEMBLY
Refer to INSPECTION [03/2024 - ]
OK
The VSC OFF switch (electric parking brake switch assembly) is normal.
Result
Proceed to OK NG Result:
NG
REPLACE ELECTRIC PARKING BRAKE SWITCH ASSEMBLY. Refer to REMOVAL [11/2021 - ]
Result:
OK
See step 3
- CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - ELECTRIC PARKING BRAKE SWITCH ASSEMBLY)
- Make sure that there is no looseness at the locking part and the connecting part of the connector.
OK
The connector is securely connected.
- Disconnect the A36 skid control ECU (brake actuator assembly) connector.
- Disconnect the D161 VSC OFF switch (electric parking brake switch assembly) connector.
- Check both the connector case and the terminals for deformation and corrosion.
OK
No deformation or corrosion.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition D161-4 (+) - A36-38 (CSW) Always Below 1 Ω D161-4 (+) or A36-38 (CSW) - Body ground Always 10 kΩ or higher D161-7 (E) - Body ground 1 minute or more after disconnecting the cable from the negative (-) battery terminal Below 1 Ω Result
Proceed to OK NG
Result:
OK
REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to REMOVAL [11/2021 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- Make sure that there is no looseness at the locking part and the connecting part of the connector.