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Home >> Chevrolet >> 2016 >> Traverse LTZ, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U1500, U1511, U1512, or U1513: Inter-Device Dedicated Bus 1/Electronic Control Unit (ECU) >> Circuit/System Testing
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Circuit/System Testing

Compass Malfunction Test

  1. Ignition OFF, disconnect the harness connector at the electronic compass module.
  2. Ignition OFF, test for less than 5.0 Ω between the ground circuit terminal 2 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
  4. Test for 6.0-7.0 V between the LIN Bus circuit terminal 3 and ground.
    • If greater than the specified range, test the LIN Bus circuit for a short to voltage. If the circuit tests normal, replace the BCM.
    • If less than the specified range, test the LIN Bus circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  5. If all circuits test normal, replace the electronic compass module.

Window Malfunction Test

  1. Ignition OFF, disconnect the harness connector at the appropriate window motor.
  2. Ignition OFF, test for less than 2.0 Ω between the ground circuit terminal 4 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 3 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. Test for 6.0-7.0 V between the LIN circuit terminal 5 and ground.
    • If greater than the specified range, test the LIN circuit for a short to voltage. If the circuit tests normal, replace the door module.
    • If less than the specified range, test the LIN circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the door module.
  5. If all circuits test normal, replace the window motor.
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