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Home >> Pontiac >> 2009 >> Torrent Base, AWD >> Repair and Diagnosis >> Electrical >> Instrument Panel System Displays & Gauges >> Diagnostic Information and Procedures >> Compass Malfunction >> Circuit/System Testing >> Compass Display Is Blank

Compass Display Is Blank

  1. Ignition OFF, disconnect the harness connector at the compass module.
  2. Test for less than 5 ohms between the ground circuit terminal 2 and ground.
    • If greater than the specified range, test the ground circuit for a short to voltage or an open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between the voltage circuit terminal 1 and ground.
    • If the test lamp does not illuminate, repair the circuit for a short to ground or an open/high resistance.
  4. Ignition OFF, test for greater than 1 ohm between the compass LIN 3 data circuit terminal 3 and ground.
    • If less than the specified range, test the LIN 3 data circuit for a short to ground.
  5. Ignition ON, verify that a test lamp does not illuminate between the compass LIN 3 data circuit terminal 3 and ground
    • If the test lamp illuminates, test the LIN 3 data circuit for a short to voltage.
  6. Ignition OFF, disconnect the X4 harness connector at the BCM.
  7. Test for less than 1 ohm between the compass LIN 3 data circuit terminal 3 to the BCM terminal 6.
    • If greater than the specified range, repair the LIN 3 data circuit for an open/high resistance.
  8. If all circuits test normal, replace the compass module.
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