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Home >> Hummer >> 2008 >> H3 Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B0530 >> Circuit/System Testing

Circuit/System Testing

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Right Turn Indicator Circuit Test

  1. Ignition OFF, disconnect the harness connector at the IPC.
  2. Verify that a test lamp illuminates when connected from battery voltage to the ground circuit terminal 4.
    • If the test lamp does not illuminate test the ground circuit for an open/high resistance.
  3. Connect a test lamp between the control circuit terminal 7 and the ground circuit terminal 4.
  4. Ignition ON, operate the right turn signal and verify that the test lamp flashes.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the BCM.
    • If the test lamp is always OFF, test the control 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, test or replace the IPC.
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