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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 Always On >> Circuit/System Testing

Circuit/System Testing

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.
IMPORTANT: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.
  1. Ignition OFF, leave the series/parallel relay, which is fan 2 relay 46, in place while disconnecting the other relays.
  2. Ignition ON, observe that the fans are not activated.
    • If the fans are not activated, replace the faulty relay.
    • If a fan is activated, test the fan voltage supply circuits for a short to voltage.
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