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Home >> Chevrolet >> 2000 >> Metro Base, 2D Hatchback >> Repair and Diagnosis >> Engine Mechanical >> Cooling Fan >> Engine Cooling Fan System - Troubleshooting >> Electric Cooling Fan Circuit Diagnosis >> 3.1L & 3.8L "W" Body (Grand PRIX) >> Cooling Fan Always On (3.8L)

Cooling Fan Always On (3.8L)

  1. If diagnostic system check has been performed, go to next step. If diagnostic system check has not been performed, see DIAGNOSTIC SYSTEM CHECK .
  2. Turn ignition on, engine off. If one or both cooling fans are on, go to next step. If one or both cooling fans are not on, problem is intermittent.
  3. If both cooling fans are running continuously, go to step  5. If both cooling fans are not running continuously, go to next step.
  4. Remove cool fan relay. If left cooling fan turned off, go to step  6. If left cooling fan did not turn off, go to step  7.
  5. Repair short to voltage in right cooling fan supply voltage circuit. After repairs, go to step  8.
  6. Repair short to voltage in right cooling fan low reference circuit. After repairs, go to step  8.
  7. Repair short to voltage in left cooling fan supply voltage circuit. After repairs, go to next step.
  8. Operate system to verify repair.
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