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.

Ignition On
Verify no other DTCs are set.
- If any other DTCs are set
  Refer to:Diagnostic Trouble Code (DTC) List - Vehicle
- Go to next step: If no other DTCs are set
Verify the scan tool parameter: Throttle Body Idle Air Flow Compensation Less than 90%
- If greater than 90%
  Refer to:Throttle Body Inspection and Cleaning
- Go to next step: If less than 90%
Engine - Idling - At normal operating temperature
Verify the scan tool parameter:Engine Speed = -100 to +200 RPM of the Desired Idle Speed
- Go to next step: If a condition existsEngine SpeedLess than desired-100 to +200 RPM of the Desired Idle Speed
  Go to next step: Refer to Circuit/System Testing.
- Go to next step: If a condition exists Engine Speed Greater than desired-100 to +200 RPM of the Desired Idle Speed
  Go to next step: Refer to Circuit/System Testing.
- Go to next step: If a condition exists Engine Speed 200 RPM Less than desired
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.
Verify the DTC does not set.
- Go to next step: If the DTC sets
  Go to next step: Refer to Circuit/System Testing.
- Go to next step: If the DTC does not set
All OK.