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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 113 (Engine Cooling System) >> Diagnostic Information and Procedures >> DTC P0480 or P0481 (V8 and V6-LF1, LGD - Dual Fan) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine operating, command the cooling fans ON and OFF at high speed while observing the scan tool circuit test status parameters listed below:
    • FC Relay 1 Ckt Open, Short Gnd, and Short Volts Test Status
    • FC Relay 2 and 3 Ckt Open, Short Gnd, and Short Volts Test Status

      The parameters should display OK or Not Run in each of the commanded states.

  2. Observe the DTC information with a scan tool. DTC P0480 and P0481 should not set.
  3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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