EGR Control System Inspection
- 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 WDS or equivalent to the DLC-2 and verify that the DTC P0403 is shown. Perform DTC inspection. (See 01-02A-21 DTC TABLE.)
- Start the engine and run it at idle.
- Warm-up the engine to normal operating temperature.
- Select the following PIDs:
- Let the vehicle idle and verify that the SEGRP value is 0
.
- Put the vehicle in drive.
- Depress the accelerator pedal and verify that the SEGRP value increases.
- If the SEGRP value does not increase, inspect the VSS, TP 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)
- Stop the vehicle and verify that the SEGRP value returns to 0
.