Circuit/System Verification
WARNING: This page is about a different car, the 2007 Isuzu i-370, 2007 GMC Canyon, and 2007 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
- If any secondary air injection system pressure sensor circuit DTCs are set, perform those diagnostics first.
- Inspect the AIR hoses/pipes between the pump and the shut-off valve for leaks.
- Engine running, enable the AIR pump and observe that the AIR Pressure Sensor parameter increases to approximately 20-25 kPa above BARO.