VSC OFF Switch Circuit [02/2019 - 12/2021]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Select the Data List on the Techstream.

   Refer to DATA LIST / ACTIVE TEST [02/2019 - 12/2021]

   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

4. 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

   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

Result: 

B 

INSPECT METER / GAUGE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

Result: 

C 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

Result: 

A 

See step  2

1. Turn the ignition switch off.
2. Remove the VSC OFF switch.

   Refer to REMOVAL [11/2018 - ]

3. Inspect the VSC OFF switch.

   Refer to INSPECTION [11/2018 - ]

   OK

   The VSC OFF switch operates normally.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE VSC OFF SWITCH. Refer to  REMOVAL [11/2018 - ] 

Result: 

OK 

See step  3

1. Disconnect the A42 skid control ECU (brake booster with master cylinder assembly) connector.
2. 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.

   Refer to PROBLEM SYMPTOMS TABLE [11/2018 - 12/2021]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [02/2019 - 10/2019]  , or refer to  REMOVAL [10/2019 - 08/2020]  , or refer to  REMOVAL [08/2020 - 12/2021] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR