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Home >> Toyota >> 2021 >> 4Runner TRD Pro >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (For Hydraulic Brake Booster) - Diagnostic Codes (C1422-U0073) & Symptom Tests >> VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster) >> VSC OFF Indicator Light does not Come ON [08/2015 - ] >> Procedure

VSC OFF Indicator Light does not Come ON [08/2015 - ]: Procedure

  1. CHECK CAN COMMUNICATION LINE 

    See step  2[08/2015 - 08/2019], or see step  2[08/2019 - ]

    Result: 

    NG 

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] )

    Result: 

    OK 

    See step  2

  2. READ VALUE USING TECHSTREAM (TRAC/VSC OFF MODE) 

    See step  5[08/2015 - 08/2019], or see step  5[08/2019 - ]

    Result: 

    OK 

    GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] )

    Result: 

    NG 

    See step  3

  3. INSPECT VSC OFF SWITCH 

    See step  6[08/2015 - 08/2019], or see step  6[08/2019 - ]

    Result: 

    NG 

    REPLACE VSC OFF SWITCH 

    (Refer to REMOVAL [08/2015 - ] )

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - VSC OFF SWITCH) 

    See step  7[08/2015 - 08/2019], or see step  7[08/2019 - ]

    Result: 

    OK 

    REPLACE MASTER CYLINDER SOLENOID 

    (Refer to DISASSEMBLY [08/2015 - ] )

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR