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Home >> Chevrolet >> 2001 >> Cavalier LS, 2.2 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 143 (Engine Cooling System) >> Diagnostic Information and Procedures >> DTC P0480 >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. 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 operates. 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 relay. The cool fan fuse supplies power to the cooling fan relay.
  3. 4. Verifies that the PCM is providing ground to the cooling fan relay.
  4. 5. Tests if ground is constantly being applied to the cooling fan relay.
Fig 1: DTC P0480 (Steps 1-2)
G01580869Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0480 (Steps 3-14)
G01580870Courtesy of GENERAL MOTORS CORP.
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