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Home >> Chevrolet >> 2025 >> Traverse Z71 >> Repair and Diagnosis >> Body & Frame >> Fixed And MOVEABLE Windows >> Diagnostic Information And Procedures >> DTC B1952 >> Circuit/System Testing

Circuit/System Testing

  1. Vehicle Power Mode - Off.
  2. Disconnect The Electrical Connector: X1 @ M74D Front Side Door Window Regulator Motor - Driver.
  3. Connect A Test Lamp Between The Test Points: Signal Circuit Terminal 3 & B+.
  4. Vehicle Power Mode - Run/Service Mode.
  5. 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 Appropriate Electrical 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 Appropriate Electrical 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 
  6. Connect A Test Lamp Between The Test Points: Signal Circuit Terminal 7 & B+.
  7. Vehicle Power Mode - Run/Service Mode.
  8. 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 Appropriate Electrical 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 Appropriate Electrical 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 
  9. Connect A Test Lamp Between The Test Points: Signal Circuit Terminal 5 & B+.
  10. Vehicle Power Mode - Run/Service Mode.
  11. 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 Appropriate Electrical 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 Appropriate Electrical 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 
  12. Test Or Replace The Component: M74D Front Side Door Window Regulator Motor - Driver.
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