Circuit/System Verification

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.

Ignition ON.
Verify that DTC P0480, P0481, P0691, P0692, P0693, or P0694 is not set.
- If a DTC is set
  Refer to DTC P0480, P0481, P0691, P0692, P0693, or P0694 .
- If no DTC is set
Verify the scan tool parameters listed below display OFF:
- Cooling Fan Relay 1 Command
- Cooling Fan Relays 2 and 3 Command
- If a scan tool parameter displays ON
  Refer to Diagnostic Aids and Symptoms - Engine Cooling for further diagnosis.
- If both scan tool parameters display OFF
Verify that the fans are not activated.
- If a fan is operating
  Refer to Circuit/System Testing.
- If both fans are OFF
All OK