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Home >> Chevrolet >> 2013 >> Traverse LT, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 197 (Sunroof System) >> Diagnostic Information and Procedures >> Power Sunroof/Sunshade Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2015 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Because of the accessibility of the switches, perform the switch component testing before beginning the circuit/system testing.

  1. Ignition OFF, disconnect the harness connector at the appropriate module, K61 sunroof control module or K62 sunroof shade control module.
  2. Scan tool not connected, doors closed, wait 5 minutes and test for less than 30 Ω between the ground circuit terminal 4 and ground.
    • If greater than the specified value, test the ground circuit for an open/high resistance.
  3. Verify that a test lamp illuminates between the B+ circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, determine if the appropriate module is causing the fuse to open. Replace the appropriate module.
  4. Test for less than 30 Ω between the jumper circuit terminals listed below:
    • K62 sunroof shade module terminals 14 and 12
    • K61 sunroof control module terminals 13 and 12
    • If not the specified value, test the jumper circuit for an open/high resistance.
  5. Test for infinite resistance between the jumper circuit terminal listed below and ground:
    • K62 sunroof shade module terminals 14
    • K61 sunroof control module terminals 13
    • If not the specified value, test the jumper circuit for a short to ground.
  6. Verify a test lamp does not illuminate between the jumper wire circuit terminal listed below and ground:
    • K62 sunroof shade module terminals 14
    • K61 sunroof control module terminals 13
    • If the test lamp illuminates, test the jumper circuit for a short to voltage.
  7. Connect the harness connector at the appropriate module, K62 sunroof shade module or K61 sunroof control module.
  8. Disconnect the harness connector at the S72 sunroof switch or the S90 sunroof sunshade switch.
  9. Scan tool not connected, doors closed, wait 5 minutes and test for less than 30 Ω between the low reference circuit terminal 1 and ground.
    • If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the appropriate module.
  10. Ignition ON, test for 4.5-5.5 V between the reference voltage circuit terminal 4 and ground.
    • If less than the specified range, test the reference voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the appropriate module.
    • If greater than the specified range, test the reference circuit for a short to voltage. If the circuit tests normal, replace the appropriate module.
  11. If all circuits test normal, test or replace the appropriate switch.
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