EGR Valve Operation Inspection
WARNING: This page is about a different car, the 2018 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that the MAP sensor is normal. (See Manifold Absolute Pressure (MAP) Sensor Inspection .)
- Connect the M-MDS to the DLC-2.
- Start the engine.
- Access the following PCM PIDs using the M-MDS. (See On-Board Diagnostic Test
.)
- SEGRP
- SEGRP_DSD
- Verify the SEGRP PID value when the simulation item SEGRP_DSD increases from 0% to 100%.
- If the SEGRP does not operate:
- Perform the EGR valve resistance inspection. (See EGR Valve Inspection .)
- If the SEGRP does not operate: