Circuit/System Verification
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2013 GMC Yukon XL, 2013 GMC Yukon, 2013 Chevrolet Suburban, 2013 Chevrolet Avalanche, and 2013 Cadillac Escalade EXT. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, engine OFF, seal the EVAP system using the Purge/Seal function with a scan tool.
- Start the engine.
- Observe the FTP sensor with a scan tool. The FTP sensor parameter should be less than 1.7 V after 90 s.
- If the FTP sensor parameter is greater than the specified range, go to Circuit/System Testing .
- 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.