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Home >> Saturn >> 2000 >> SC2 Automatic, MP6 >> Repair and Diagnosis >> Engine Mechanical >> Cooling Fan >> Engine Cooling Fan System - Troubleshooting >> Electric Cooling Fan Circuit Diagnosis >> 4.6L ELDORADO >> Cooling Fan Always On

Cooling Fan Always On

  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 cooling fan series/parallel relay. If right cooling fan turned off, go to step  6. If right cooling fan did not turn off, go to step  7.
  5. Repair short to voltage in left cooling fan motor supply voltage circuit (Gray wire). After repairs, go to step  8.
  6. Repair short to voltage in left cooling fan low reference circuit (White wire). After repairs, go to step  8.
  7. Repair short to voltage in right cooling fan motor supply voltage circuit (Light Blue wire). After repairs, go to next step.
  8. Operate system to verify repair.
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