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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Sunroof System) >> Diagnostic Information and Procedures >> DTC B369C: Sunroof Tilt Position Select Switch Circuit >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

Sunroof Ventilation Switch

Static Test

  1. Ignition OFF, disconnect the harness connector at the S72 Sunroof Switch.
  2. Test for 840-1030 Ω between the control terminal 2 and the low reference terminal 5.
    • If not between 840-1030 Ω 

      Replace the S72 Sunroof Switch.

    • If between 840-1030 Ω 
  3. Test for 88-107 Ω between the control terminal 2 and the low reference terminal 5 while pressing the open switch.
    • If not between 88-107 Ω 

      Replace the S72 Sunroof Switch.

    • If between 88-107 Ω 
  4. Test for 390-480 Ω between the control terminal 2 and the ground terminal 5 while pressing the close switch.
    • If not between 390-480 Ω 

      Replace the S72 Sunroof Switch.

    • If between 390-480 Ω 
  5. All OK.