lemon-mirror:
Home >> Mazda >> 2007 >> 6 s, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Control System AJ) >> Engine Control System Operation Inspection >> EGR Control System Inspection

EGR Control System Inspection

  1. Verify that EGR valve operation (initial operation) sound is heard when the ignition switch is turned to ON position.
    • If the operation sound is not heard, connect M-MDS to the DLC-2 and verify that the DTC P0403 is shown. Perform DTC inspection. (See DTC TABLE ).
  2. Start the engine and run it at idle.
  3. Warm-up the engine to normal operating temperature.
  4. Select the following PIDs:
    • ECT
    • RPM
    • SEGRP
    • APP1
    • APP2
    • TP_REL
    • VSS
  5. Let the vehicle idle and verify that the SEGRP value is 0  .
  6. Put the vehicle in drive.
  7. Depress the accelerator pedal and verify that the SEGRP value increases.
    • If the SEGRP value does not increase, inspect the VSS, APP1, APP2, TP_REL and ECT PIDs. (See PCM INSPECTION ).
    • If the SEGRP value does increases, inspect the following:
      • EGR valve (Stuck open or close)
      • Wiring harness and connectors (Main relay-EGR valve-PCM)
  8. Stop the vehicle and verify that the SEGRP value returns to 0.
· About lemon-mirror