VSC OFF Switch Circuit [10/2018 - 07/2022]: Procedure
- READ VALUE USING TECHSTREAM (TRC(TRAC)/VSC OFF MODE)
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Enter the following menus: Chassis / Brake/EPB / Data List.
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) /
Not defined /
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
Not defined: Not defined
VSC OFF mode (TRC(TRAC) OFF/VSC OFF): VSC off mode- Chassis > Brake/EPB > Data List
Tester Display TRC(TRAC)/VSC OFF Mode - 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 ("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 TRC(TRAC) OFF mode (TRC(TRAC) OFF/VSC ON) Displayed Does not come on Pressing and holding the VSC OFF switch 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 [10/2018 - 07/2022]
Result:
C
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ]
Result:
A
See step 2
- INSPECT VSC OFF SWITCH
- Make sure that there is no looseness at the locking part and the connecting part of the connector.
*a Component without harness connected
(VSC OFF Switch)OK
The connector is securely connected.
- Disconnect the I2 VSC OFF switch connector.
- Check both the connector case and the terminal 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 2 (+) - 7 (E) Switch pushed Below 1 Ω 2 (+) - 7 (E) Switch not pushed 10 kΩ or higher Result
Proceed to OK NG
Result:
NG
REPLACE VSC OFF SWITCH. Refer to REMOVAL [10/2018 - 07/2022]
Result:
OK
See step 3
- Make sure that there is no looseness at the locking part and the connecting part of the connector.
- CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - VSC OFF SWITCH)
- 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 A38 skid control ECU (brake actuator assembly) connector.
- Disconnect the I2 VSC OFF switch 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 I2-2 (+) - A38-38 (CSW) Always Below 1 Ω I2-2 (+) or A38-38 (CSW) - Body ground Always 10 kΩ or higher I2-7 (E) - Body ground Always Below 1 Ω Result
Proceed to OK NG
Result:
OK
REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to REMOVAL [10/2018 - 07/2022]
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.