VSC OFF Switch Circuit [10/2022 - ]: Procedure
- READ VALUE USING GTS (TRAC/VSC OFF MODE)
- Check that the indicator light and mode condition on the GTS change according to VSC OFF switch 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 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
except 12.3 Inch Display: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ]
for 12.3 Inch Display: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ]
Result:
C
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ]
Result:
A
See step 2
- Check that the indicator light and mode condition on the GTS change according to VSC OFF switch operation.
- INSPECT VSC OFF SWITCH
- Turn the ignition switch off.
- Inspect the VSC OFF switch.
Refer to PROCEDURE - Step 1
OK
The VSC OFF switch is normal.
Result
Proceed to OK NG
Result:
NG
REPLACE VSC OFF SWITCH. Refer to REMOVAL [07/2020 - ]
Result:
OK
See step 3
- 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 A85 No. 2 skid control ECU (brake actuator 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 A85-9 (CSW) - E31-5 (+) Always Below 1 Ω A85-9 (CSW) or E31-5 (+) - Body ground Always 10 kΩ or higher E31-2 (E) - Body ground 1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal Below 1 Ω Result
Proceed to OK NG
Result:
OK
REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to REMOVAL [10/2022 - ]
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.