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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Engine Cooling System) >> Diagnostic Information and Procedures >> Cooling Fan Inoperative >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF.
  2. Disconnect a KR20 Cooling Fan Relay.
  3. Test for 70 - 110 Ω between terminals 85 and 86.
    • If less than 70 Ω or greater than 110 Ω 

      Replace the KR20 cooling fan relay.

    • If between 70 - 110 Ω 
  4. Test for infinite resistance between the following terminals:
    • 30 and 86
    • 30 and 87
    • 30 and 85
    • 85 and 87
    • If less than infinite resistance 

      Replace the KR20 Cooling Fan Relay.

    • If infinite resistance 
  5. All OK.