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HOMESERVICE MANUALSCHEVROLET2025TRAVERSE HIGH COUNTRY, FWDREPAIR AND DIAGNOSISBODY & FRAMEFIXED AND MOVEABLE WINDOWSDIAGNOSTIC INFORMATION AND PROCEDURESPOWER WINDOWS MALFUNCTIONCIRCUIT/SYSTEM TESTING
2025 Chevrolet Traverse High Country, FWD

Circuit/System Testing

2025 Chevrolet Traverse High Country, FWDSECTION Circuit/System Testing

Test 1

  1. Vehicle Power Mode - Off.
  2. Disconnect The Electrical Connector: X1 @ S79D Front Side Door Window Control Switch - Driver
  3. Verify A Test Lamp Illuminates Between Ground Circuit Terminal 1 And B+.
    • If The Test Lamp Does Not Illuminate 
    1. Repair The Open/High Resistance On Circuit 3850 Or The Ground Connection.
    • Go To Next Step: If The Test Lamp Illuminates 
  4. Vehicle Power Mode - Run/Service Mode.
  5. Verify A Test Lamp Illuminates Between B+ Circuit Terminal 8 And Ground.
    • If The Test Lamp Does Not Illuminate And The Circuit Fuse Is Good 
    1. Test The B+ Circuit 2440 For An Open/High Resistance.
      • If An Open/High Resistance Is Found, Repair The Fault On The Circuit.
      • Go To Next Step: If An Open Or High Resistance Is Not Found
    2. Verify The Fuse Is Not Open And There Is Voltage At The Fuse.
    • If The Test Lamp Does Not Illuminate And The Circuit Fuse Is Open 
    1. Test The B+ Circuit 2440 For A Short To Ground
      • If A Short To Ground Is Found, Repair The Fault On The Circuit.
      • Go To Next Step: If A Short To Ground Is Not Found
    2. Replace The S79D Front Side Door Window Control Switch - Driver
    • Go To Next Step: If The Test Lamp Illuminates 
  6. Vehicle Power Mode - Off.
  7. Connect The Electrical Connector - S79D Front Side Door Window Control Switch - Driver
  8. Disconnect The Electrical Connector: M74D Front Side Door Window Regulator Motor - Driver
  9. Vehicle Power Mode - Run/Service Mode.
  10. Verify A Test Lamp Illuminates Between B+ Circuit Terminal 2 And Ground.
    • If The Test Lamp Does Not Illuminate And The Circuit Fuse Is Good 
    1. Test The B+ Circuit 540 For An Open/High Resistance.
      • If An Open/High Resistance Is Found, Repair The Fault On The Circuit.
      • Go To Next Step: If An Open Or High Resistance Is Not Found
    2. Verify The Fuse Is Not Open And There Is Voltage At The Fuse.
    • If The Test Lamp Does Not Illuminate And The Circuit Fuse Is Open 
    1. Test The B+ Circuit 540 For A Short To Ground.
      • If A Short To Ground Is Found, Repair The Fault On The Circuit.
      • Go To Next Step: If A Short To Ground Is Not Found.
    2. Replace The M74D Front Side Door Window Regulator Motor - Driver.
    • Go To Next Step: If The Test Lamp Illuminates 
  11. Vehicle Power Mode - Off.
  12. Connect A Test Lamp Between The Test Points: Signal Circuit Terminal 3 & B+.
  13. Vehicle Power Mode - Run/Service Mode.
  14. Operate The Component: Driver Left Front Window Switch @ S79D Front Side Door Window Control Switch - Driver - Pulled

    Verify The Test Lamp State:

    Driver Left Front Window Switch - Not Used = Test Lamp Off

    Driver Left Front Window Switch - Pulled = Test Lamp On

    • If The Test Lamp Is Always Off 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The X1 Harness Connector At The S79D Front Side Door Window Control Switch - Driver.
    3. Test For Less Than 2 Ω In The Circuit 2763 End To End.
      • If 2 Ω Or Greater, Repair The Open/High Resistance In The Circuit.
      • Go To Next Step: If Less Than 2 Ω.
    4. Vehicle Power Mode - Run/Service Mode.
    5. Test For Less Than 1 V Between The Circuit 2763 And Ground.
      • If 1 V Or Greater, Repair The Short To Voltage On The Circuit.
      • If Less Than 1 V, Replace The S79D Front Side Door Window Control Switch - Driver.
    • If The Test Lamp Is Always On 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The X1 Harness Connector At The S79D Front Side Door Window Control Switch - Driver.
    3. Test For Infinite Resistance Between The Circuit 2763 And Ground.
      • If Less Than Infinite Resistance, Repair The Short To Ground On The Circuit.
      • If Infinite Resistance, Replace The S79D Front Side Door Window Control Switch - Driver
    • Go To Next Step: If The Test Lamp Turns On And Off 
  15. Connect A Test Lamp Between The Test Points: Signal Circuit Terminal 7 & B+.
  16. Vehicle Power Mode - Run/Service Mode.
  17. Operate The Component: Driver Left Front Window Switch @ S79D Front Side Door Window Control Switch - Driver - Pressed

    Verify The Test Lamp State:

    Driver Left Front Window Switch - Not Used = Test Lamp Off

    Driver Left Front Window Switch - Pressed = Test Lamp On

    • If The Test Lamp Is Always Off 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The X1 Harness Connector At The S79D Front Side Door Window Control Switch - Driver.
    3. Test For Less Than 2 Ω In The Circuit 2764 End To End.
      • If 2 Ω Or Greater, Repair The Open/High Resistance In The Circuit.
      • Go To Next Step: If Less Than 2 Ω.
    4. Vehicle Power Mode - Run/Service Mode.
    5. Test For Less Than 1 V Between The Circuit 2764 And Ground.
      • If 1 V Or Greater, Repair The Short To Voltage On The Circuit.
      • If Less Than 1 V, Replace The S79D Front Side Door Window Control Switch - Driver.
    • If The Test Lamp Is Always On 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The X1 Harness Connector At The S79D Front Side Door Window Control Switch - Driver.
    3. Test For Infinite Resistance Between The Circuit 2764 And Ground.
      • If Less Than Infinite Resistance, Repair The Short To Ground On The Circuit.
      • If Infinite Resistance, Replace The S79D Front Side Door Window Control Switch - Driver
    • Go To Next Step: If The Test Lamp Turns On And Off 
  18. Connect A Test Lamp Between The Test Points: Signal Circuit Terminal 5 & B+.
  19. Vehicle Power Mode - Run/Service Mode.
  20. Operate The Component: Driver Left Front Window Switch @ S79D Front Side Door Window Control Switch - Driver - Pressed & Pulled

    Verify The Test Lamp State:

    Driver Left Front Window Switch - Not Used = Test Lamp Off

    Driver Left Front Window Switch - Pressed = Test Lamp On

    Driver Left Front Window Switch - Pulled = Test Lamp On

    • If The Test Lamp Is Always Off 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The X2 Harness Connector At The S79D Front Side Door Window Control Switch - Driver.
    3. Test For Less Than 2 Ω In The Circuit 2766 End To End.
      • If 2 Ω Or Greater, Repair The Open/High Resistance In The Circuit.
      • Go To Next Step: If Less Than 2 Ω.
    4. Vehicle Power Mode - Run/Service Mode.
    5. Test For Less Than 1 V Between The Circuit 2766 And Ground.
      • If 1 V Or Greater, Repair The Short To Voltage On The Circuit.
      • If Less Than 1 V, Replace The S79D Front Side Door Window Control Switch - Driver.
    • If The Test Lamp Is Always On 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The X2 Harness Connector At The S79D Front Side Door Window Control Switch - Driver.
    3. Test For Infinite Resistance Between The Circuit 2766 And Ground.
      • If Less Than Infinite Resistance, Repair The Short To Ground On The Circuit.
      • If Infinite Resistance, Replace The S79D Front Side Door Window Control Switch - Driver
    • Go To Next Step: If The Test Lamp Turns On And Off 
  21. Test Or Replace The Component: M74D Front Side Door Window Regulator Motor - Driver.

Test 2

  1. Vehicle Power Mode - Off.
  2. Disconnect The Electrical Connector: X1 @ S79P Front Side Door Window Switch - Passenger.
  3. Verify A Test Lamp Illuminates Between Ground Circuit Terminal 1 And B+.
    • If The Test Lamp Does Not Illuminate 
    1. Repair The Open/High Resistance On Circuit 2150 Or The Ground Connection.
    • Go To Next Step: If The Test Lamp Illuminates 
  4. Vehicle Power Mode - Run/Service Mode.
  5. Verify A Test Lamp Illuminates Between B+ Circuit Terminal 8 And Ground.
    • If The Test Lamp Does Not Illuminate And The Circuit Fuse Is Good 
    1. Test The B+ Circuit 240 For An Open/High Resistance.
      • If An Open/High Resistance Is Found, Repair The Fault On The Circuit.
      • Go To Next Step: If An Open Or High Resistance Is Not Found.
    2. Verify The Fuse Is Not Open And There Is Voltage At The Fuse.
    • If The Test Lamp Does Not Illuminate And The Circuit Fuse Is Open 
    1. Test The B+ Circuit 240 For A Short To Ground
      • If A Short To Ground Is Found, Repair The Fault On The Circuit.
      • Go To Next Step: If A Short To Ground Is Not Found.
    2. Replace The S79P Front Side Door Window Switch - Passenger.
    • Go To Next Step: If The Test Lamp Illuminates 
  6. Vehicle Power Mode - Off.
  7. Connect The Electrical Connector: X1 @ S79P Front Side Door Window Switch - Passenger.
  8. Disconnect The Electrical Connector: M74P Front Side Door Window Regulator Motor - Passenger
  9. Connect A Test Lamp Between The Test Points: Control Circuit Terminal 1 & Ground
  10. Vehicle Power Mode - Run/Service Mode.
  11. Operate The Component: S79P Front Side Door Window Switch - Passenger - Pulled

    Verify The Test Lamp State:

    S79P Front Side Door Window Switch - Passenger - Not Used = Test Lamp Off

    S79P Front Side Door Window Switch - Passenger - Pulled = Test Lamp On

    • If The Test Lamp Is Always Off 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The X1 Harness Connector At The S79P Front Side Door Window Switch - Passenger.
    3. Test For Infinite Resistance Between The Circuit 666 And Ground.
      • If Less Than Infinite Resistance, Repair The Short To Ground On The Circuit.
      • Go To Next Step: If Infinite Resistance.
    4. Test For Less Than 2 Ω In The Circuit 666 End To End.
      • If 2 Ω Or Greater, Repair The Open/High Resistance In The Circuit.
      • If Less Than 2 Ω, Replace The S79P Front Side Door Window Switch - Passenger.
    • If The Test Lamp Is Always On 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The X1 Harness Connector At The S79P Front Side Door Window Switch - Passenger.
    3. Vehicle Power Mode - Run/Service Mode.
    4. Test For Less Than 1 V Between The Circuit 666 And Ground.
      • If 1 V Or Greater, Repair The Short To Voltage On The Circuit.
      • If Less Than 1 V, Replace The S79P Front Side Door Window Switch - Passenger.
    • Go To Next Step: If The Test Lamp Turns On And Off 
  12. Connect A Test Lamp Between The Test Points: Control Circuit Terminal 2 & Ground
  13. Vehicle Power Mode - Run/Service Mode.
  14. Operate The Component: S79P Front Side Door Window Switch - Passenger - Pressed

    Verify The Test Lamp State:

    S79P Front Side Door Window Switch - Passenger - Not Used = Test Lamp Off

    S79P Front Side Door Window Switch - Passenger - Pressed = Test Lamp On

    • If The Test Lamp Is Always Off 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The X1 Harness Connector At The S79P Front Side Door Window Switch - Passenger.
    3. Test For Infinite Resistance Between The Circuit 667 And Ground.
      • If Less Than Infinite Resistance, Repair The Short To Ground On The Circuit.
      • Go To Next Step: If Infinite Resistance
    4. Test For Less Than 2 Ω In The Circuit 667 End To End.
      • If 2 Ω Or Greater, Repair The Open/High Resistance In The Circuit.
      • If Less Than 2 Ω, Replace The S79P Front Side Door Window Switch - Passenger.
    • If The Test Lamp Is Always On 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The X1 Harness Connector At The S79P Front Side Door Window Switch - Passenger.
    3. Vehicle Power Mode - Run/Service Mode.
    4. Test For Less Than 1 V Between The Circuit 667 And Ground.
      • If 1 V Or Greater, Repair The Short To Voltage On The Circuit.
      • If Less Than 1 V, Replace The S79P Front Side Door Window Switch - Passenger.
    • Go To Next Step: If The Test Lamp Turns On And Off 
  15. Test Or Replace The Component: M74P Front Side Door Window Regulator Motor - Passenger

Test 3

  1. Vehicle Power Mode - Off.
  2. Disconnect The Electrical Connector: S79Lr Rear Side Door Window Switch - Left
  3. Verify A Test Lamp Illuminates Between Ground Circuit Terminal 7 And B+.
    • If The Test Lamp Does Not Illuminate 
    1. Repair The Open/High Resistance On Circuit 3850 Or The Ground Connection.
    • Go To Next Step: If The Test Lamp Illuminates 
  4. Verify A Test Lamp Illuminates Between Ground Circuit Terminal 3 And B+.
    • If The Test Lamp Does Not Illuminate 
    1. Repair The Open/High Resistance On Circuit 3151 Or The Ground Connection.
    • Go To Next Step: If The Test Lamp Illuminates 
  5. Vehicle Power Mode - Run/Service Mode.
  6. Verify A Test Lamp Illuminates Between B+ Circuit Terminal 8 And Ground.
    • If The Test Lamp Does Not Illuminate And The Circuit Fuse Is Good 
    1. Test The B+ Circuit 540 For An Open/High Resistance.
      • If An Open/High Resistance Is Found, Repair The Fault On The Circuit.
      • Go To Next Step: If An Open Or High Resistance Is Not Found
    2. Verify The Fuse Is Not Open And There Is Voltage At The Fuse.
    • If The Test Lamp Does Not Illuminate And The Circuit Fuse Is Open 
    1. Test The B+ Circuit 540 For A Short To Ground
      • If A Short To Ground Is Found, Repair The Fault On The Circuit.
      • Go To Next Step: If A Short To Ground Is Not Found
    2. Replace The S79Lr Rear Side Door Window Switch - Left
    • Go To Next Step: If The Test Lamp Illuminates 
  7. Vehicle Power Mode - Off.
  8. Connect The Electrical Connector: S79Lr Rear Side Door Window Switch - Left
  9. Disconnect The Electrical Connector: M74Lr Rear Side Door Window Regulator Motor - Left
  10. Connect A Test Lamp Between The Test Points: Control Circuit Terminal 1 & Ground
  11. Vehicle Power Mode - Run/Service Mode.
  12. Operate The Component: S79Lr Rear Side Door Window Switch - Left - Pulled

    Verify The Test Lamp State:

    S79Lr Rear Side Door Window Switch - Left - Not Used = Test Lamp Off

    S79Lr Rear Side Door Window Switch - Left - Pulled = Test Lamp On

    • If The Test Lamp Is Always Off 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The Harness Connector At The S79Lr Rear Side Door Window Switch - Left.
    3. Test For Infinite Resistance Between The Circuit 668 And Ground.
      • If Less Than Infinite Resistance, Repair The Short To Ground On The Circuit.
      • Go To Next Step: If Infinite Resistance.
    4. Test For Less Than 2 Ω In The Circuit 668 End To End.
      • If 2 Ω Or Greater, Repair The Open/High Resistance In The Circuit.
      • If Less Than 2 Ω, Replace The S79Lr Rear Side Door Window Switch - Left
    • If The Test Lamp Is Always On 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The Harness Connector At The S79Lr Rear Side Door Window Switch - Left.
    3. Vehicle Power Mode - Run/Service Mode.
    4. Test For Less Than 1 V Between The Circuit 668 And Ground.
      • If 1 V Or Greater, Repair The Short To Voltage On The Circuit.
      • If Less Than 1 V, Replace The S79Lr Rear Side Door Window Switch - Left.
    • Go To Next Step: If The Test Lamp Turns On And Off 
  13. Connect A Test Lamp Between The Test Points: Control Circuit Terminal 2 & Ground
  14. Vehicle Power Mode - Run/Service Mode.
  15. Operate The Component: S79Lr Rear Side Door Window Switch - Left - Pressed

    Verify The Test Lamp State:

    S79Lr Rear Side Door Window Switch - Left - Not Used = Test Lamp Off

    S79Lr Rear Side Door Window Switch - Left - Pressed = Test Lamp On

    • If The Test Lamp Is Always Off 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The Harness Connector At The S79Lr Rear Side Door Window Switch - Left.
    3. Test For Infinite Resistance Between The Circuit 669 And Ground.
      • If Less Than Infinite Resistance, Repair The Short To Ground On The Circuit.
      • Go To Next Step: If Infinite Resistance.
    4. Test For Less Than 2 Ω In The Circuit 669 End To End.
      • If 2 Ω Or Greater, Repair The Open/High Resistance In The Circuit.
      • If Less Than 2 Ω, Replace The S79Lr Rear Side Door Window Switch - Left.
    • If The Test Lamp Is Always On 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The Harness Connector At The S79Lr Rear Side Door Window Switch - Left.
    3. Vehicle Power Mode - Run/Service Mode.
    4. Test For Less Than 1 V Between The Circuit 669 And Ground.
      • If 1 V Or Greater, Repair The Short To Voltage On The Circuit.
      • If Less Than 1 V, Replace The S79Lr Rear Side Door Window Switch - Left.
    • Go To Next Step: If The Test Lamp Turns On And Off 
  16. Test Or Replace The Component: M74Lr Rear Side Door Window Regulator Motor - Left

Test 4

  1. Vehicle Power Mode - Off.
  2. Disconnect The Electrical Connector: S79Rr Rear Side Door Window Switch - Right
  3. Verify A Test Lamp Illuminates Between Ground Circuit Terminal 7 And B+.
    • If The Test Lamp Does Not Illuminate 
    1. Repair The Open/High Resistance On Circuit 2150 Or The Ground Connection.
    • Go To Next Step: If The Test Lamp Illuminates 
  4. Vehicle Power Mode - Run/Service Mode.
  5. Verify A Test Lamp Illuminates Between B+ Circuit Terminal 8 And Ground.
    • If The Test Lamp Does Not Illuminate And The Circuit Fuse Is Good 
    1. Test The B+ Circuit 240 For An Open/High Resistance.
      • If An Open/High Resistance Is Found, Repair The Fault On The Circuit.
      • Go To Next Step: If An Open Or High Resistance Is Not Found.
    2. Verify The Fuse Is Not Open And There Is Voltage At The Fuse.
    • If The Test Lamp Does Not Illuminate And The Circuit Fuse Is Open 
    1. Test The B+ Circuit 240 For A Short To Ground.
      • If A Short To Ground Is Found, Repair The Fault On The Circuit.
      • Go To Next Step: If A Short To Ground Is Not Found.
    2. Replace The S79Rr Rear Side Door Window Switch - Right.
    • Go To Next Step: If The Test Lamp Illuminates 
  6. Vehicle Power Mode - Off.
  7. Connect The Electrical Connector: S79Rr Rear Side Door Window Switch - Right
  8. Disconnect The Electrical Connector: M74Rr Rear Side Door Window Regulator Motor - Right
  9. Connect A Test Lamp Between The Test Points: Control Circuit Terminal 1 & Ground
  10. Vehicle Power Mode - Run/Service Mode.
  11. Operate The Component: S79Rr Rear Side Door Window Switch - Right - Pulled

    Verify The Test Lamp State:

    S79Rr Rear Side Door Window Switch - Right - Not Used = Test Lamp Off

    S79Rr Rear Side Door Window Switch - Right - Pulled = Test Lamp On

    • If The Test Lamp Is Always Off 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The Harness Connector At The S79Rr Rear Side Door Window Switch - Right.
    3. Test For Infinite Resistance Between The Circuit 670 And Ground.
      • If Less Than Infinite Resistance, Repair The Short To Ground On The Circuit.
      • Go To Next Step: If Infinite Resistance.
    4. Test For Less Than 2 Ω In The Circuit 670 End To End.
      • If 2 Ω Or Greater, Repair The Open/High Resistance In The Circuit.
      • If Less Than 2 Ω, Replace The S79Rr Rear Side Door Window Switch - Right.
    • If The Test Lamp Is Always On 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The Harness Connector At The S79Rr Rear Side Door Window Switch - Right.
    3. Vehicle Power Mode - Run/Service Mode.
    4. Test For Less Than 1 V Between The Circuit 670 And Ground.
      • If 1 V Or Greater, Repair The Short To Voltage On The Circuit.
      • If Less Than 1 V, Replace The S79Rr Rear Side Door Window Switch - Right.
    • Go To Next Step: If The Test Lamp Turns On And Off 
  12. Connect A Test Lamp Between The Test Points: Control Circuit Terminal 2 & Ground
  13. Vehicle Power Mode - Run/Service Mode.
  14. Operate The Component: S79Rr Rear Side Door Window Switch - Right - Pressed

    Verify The Test Lamp State:

    S79Rr Rear Side Door Window Switch - Right - Not Used = Test Lamp Off

    S79Rr Rear Side Door Window Switch - Right - Pressed = Test Lamp On

    • If The Test Lamp Is Always Off 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The Harness Connector At The S79Rr Rear Side Door Window Switch - Right.
    3. Test For Infinite Resistance Between The Circuit 671 And Ground.
      • If Less Than Infinite Resistance, Repair The Short To Ground On The Circuit.
      • Go To Next Step: If Infinite Resistance.
    4. Test For Less Than 2 Ω In The Circuit 671 End To End.
      • If 2 Ω Or Greater, Repair The Open/High Resistance In The Circuit.
      • If Less Than 2 Ω, Replace The S79Rr Rear Side Door Window Switch - Right.
    • If The Test Lamp Is Always On 
    1. Vehicle Power Mode - Off.
    2. Remove The Test Lamp, Disconnect The Harness Connector At The S79Rr Rear Side Door Window Switch - Right.
    3. Vehicle Power Mode - Run/Service Mode.
    4. Test For Less Than 1 V Between The Circuit 671 And Ground.
      • If 1 V Or Greater, Repair The Short To Voltage On The Circuit.
      • If Less Than 1 V, Replace The S79Rr Rear Side Door Window Switch - Right.
    • Go To Next Step: If The Test Lamp Turns On And Off 
  15. Test Or Replace The Component: M74Rr Rear Side Door Window Regulator Motor - Right
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