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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 468 (Engine Cooling System) >> Diagnostic Information and Procedures >> Cooling Fan Inoperative >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. 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 50-110 Ω between terminals 85/2 and 86/1.
    • If less than 50 Ω or greater than 110 Ω 

      Replace the KR20 cooling fan relay.

    • If between 50-110 Ω 
  4. Test for infinite resistance between the following terminals:
    • 30/3 and 86/1
    • 30/3 and 87/5
    • 30/3 and 85/2
    • 85/2 and 87/5
    • If less than infinite resistance 

      Replace the KR20 Cooling Fan Relay.

    • If infinite resistance 
    5. NOTE:

    This test only applies to the speed control relay.

  5. Test for less than 2 Ω between KR20E Cooling Fan Speed Control Relay terminals 30/3 and 87A/4.
    • If 2 Ω or greater 

      Replace the KR20E Cooling Fan Speed Control Relay.

    • If less than 2 Ω 
  6. Install a 20 A fused jumper wire between relay terminal 85 or 2 and 12 V.
  7. Install a jumper wire between relay terminal 86 or 1 and ground.
  8. Test for less than 2 Ω between terminals 3/30 and 87/5.
    • If 2 Ω or greater 

      Replace the KR20 Cooling Fan Relay.

    • If less than 2 Ω 
  9. All OK.
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