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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Engine Cooling System) >> Diagnostic Information and Procedures >> Cooling Fan Inoperative (3.8L (L26)) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. If DTCs P0480 or P0481 are set, perform those diagnostics first.
  2. Verify with a scan tool that the ECM or PCM is not commanding fan relay activation.
  3. Ignition ON, command each relay ON and OFF with a scan tool. Observe to verify that the fan turns ON and OFF with each command.
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