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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Engine Cooling System) >> Diagnostic Information and Procedures >> DTC P1485-P1487 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine Running
  2. Verify the G10 Cooling Fan Motor activates when the Cooling Fan Motor Command is greater than 10% on the scan tool. The Cooling Fan speed should increase as Cooling Fan Motor Command increases.
    • The cooling fan does not activate or increase in speed as commanded 

      Refer to Circuit/System Testing

    • Go to next step: The cooling fan activates and increases in speed as commanded 
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  4. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing

    • Go to next step: If the DTC does not set 
  5. All OK.
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