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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 906 (Engine Cooling System) >> Diagnostic Information and Procedures >> DTC P0481 >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2. Listen for an audible click when the cooling fan relay and the cooling fan 2 relays operate. Command both the ON and OFF states. Repeat the commands as necessary.
  2. 3. Tests for voltage at the coil side of the cooling fan 2 relay. The cool fan 2 maxifuse® supplies battery positive voltage to the coil side of the cooling fan 2 relay.
  3. 4. Verifies that the PCM is providing ground to the cooling fan 2 relay.
  4. 5. Tests if ground is constantly being applied to the cooling fan 2 relay.
    Fig 1: DTC P0481 (1 Of 2)
    G01829148Courtesy of GENERAL MOTORS CORP.
    Fig 2: DTC P0481 (2 Of 2)
    G01829149Courtesy of GENERAL MOTORS CORP.
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