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Home >> Chevrolet >> 2012 >> Traverse LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 160 (Engine Cooling System) >> Diagnostic Information and Procedures >> Cooling Fan Inoperative >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2013 GMC Acadia, 2013 Chevrolet Traverse, and 2013 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the cooling fan relay.
  2. Test for 200-240 Ω between terminals 85 and 86.
    • If not within the specified range, replace the relay.
  3. Measure the resistance between the terminals listed below. The DMM should display OL.
    • 30 and 86
    • 30 and 87
    • 30 and 85
    • 85 and 87
      • If not the specified range, replace the relay.
  4. Test for less than 2 Ω between terminals 30 and 87A.
    • If greater than the specified range, replace the relay.
  5. Install a 20 A fused jumper wire between relay terminal 85 and 12 volts. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 Ω between terminals 30 and 87.
    • If greater than the specified range, replace the relay.
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