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Home >> Chevrolet >> 2011 >> Caprice >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Sunroof System) >> Diagnostic Information and Procedures >> DTC B3664 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Because of the accessibility of the sunroof switch, perform the component testing before beginning the Circuit/System Testing.
  1. Ignition OFF, disconnect the harness connector at the S72 Sunroof Switch.
  2. Test for less than 5 Ω between the low reference circuit terminal 1 and ground.
    • If greater than the specified value, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify the scan tool sunroof slide switch is short to battery.
    • If not the specified value, test the signal circuit terminal 4 for a short to ground. If the circuit tests normal, replace the K61 Sunroof Control Module.
  4. Install a 5 A fused jumper wire between the signal circuit terminal 4 and the ground circuit terminal 1. Verify the scan tool sunroof slide switch is stuck.
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K61 Sunroof Control Module.
  5. If all circuits test normal, test or replace the S72 Sunroof Switch.
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