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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Sunroof System >> Diagnostic Information and Procedures >> DTC B3664: Sunroof Position Select Switch >> Component Testing

Component Testing

Static Test

  1. Ignition OFF, disconnect the harness connector at the S72 Sunroof Switch.
  2. Test for 5.4-6.6kΩ between the control terminal 4 and the low reference terminal 1.
    • If not between 5.4-6.6kΩ 

      Replace the S72 Sunroof Switch.

    • If between 5.4-6.6kΩ 
  3. Test for 234-286Ω between the control terminal 4 and the low reference terminal 1 while pressing the open switch while pressing the open switch.
    • If not between 234-286Ω 

      Replace the S72 Sunroof Switch.

    • If between 234-286Ω  
  4. Test for 76-93Ω between the control terminal 4 and the low reference terminal 1 while pressing the express open switch.
    • If not between 76-93Ω 

      Replace the S72 Sunroof Switch.

    • If between 76-93Ω 
  5. Test for 1.3-1.5kΩ between the control terminal 4 and the low reference terminal 1 while pressing the close switch.
    • If not between 1.3-1.5kΩ 

      Replace the S72 Sunroof Switch.

    • If between 1.3-1.5kΩ 
  6. Test for 540-660Ω between the control terminal 4 and the low reference terminal 1 while pressing the express close switch.
    • If not between 540-660Ω 

      Replace the S72 Sunroof Switch.

    • If between 540-660Ω 
  7. All OK