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 the parameters listed below do not display Malfunction when commanding the Malfunction Indicator Lamp On and Off with a scan tool.
- The MIL Control Circuit Low Voltage Test Status
- The MIL Control Circuit Open Test Status
- The MIL Control Circuit High Voltage Test Status
- If Malfunction is displayed
  Refer to Circuit/System Testing.
- If Malfunction is not displayed
Engine running.
Verify the parameters listed below do not display Malfunction when commanding the Malfunction Indicator Lamp On and Off with a scan tool.
- The MIL Control Circuit Low Voltage Test Status
- The MIL Control Circuit Open Test Status
- The MIL Control Circuit High Voltage Test Status
- If Malfunction is displayed
  Refer to Circuit/System Testing.
- If Malfunction is not displayed
Verify the malfunction indicator lamp turns ON and OFF when commanding the Malfunction Indicator Lamp On and Off with a scan tool.
- If the malfunction indicator lamp does not turn ON and OFF
  Refer to Circuit/System Testing.
- If the malfunction indicator lamp turns ON and OFF
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.
- If the DTC sets
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
- If the DTC does not set
All OK.