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Cooling Fan Always On

  1. Did you perform the DIAGNOSTIC SYSTEM CHECK - ENGINE COOLING? If yes, go to next step. If no, go to DIAGNOSTIC SYSTEM CHECK - ENGINE COOLING  under SELF - DIAGNOSTIC.
  2. Turn ignition on, with engine off. Are one or both cooling fans ON? If yes, go to next step. If no, see INTERMITTENTS  in SYMPTOMS - ENGINE COOLING under TROUBLE SHOOTING.
  3. Are both cooling fans running continuously? If yes, go to step  5 . If no, go to next step.
  4. Remove the cooling fan S/P relay. Did the left cooling fan turn OFF? If yes, go to step  6 . If no, go to step  7 .
  5. Repair the short to voltage in the left cooling fan supply voltage circuit. After repairs are complete, go to step  8 .
  6. Repair the short to voltage in the left cooling fan low reference circuit. After repairs are complete, go to step  8 .
  7. Repair the short to voltage in the right cooling fan supply voltage circuit. After replacement is complete, go to next step.
  8. Operate the system in order to verify the repair. Did you correct the condition? If yes, then system is okay. If no, go to step  2 .
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