6 L4-2.3L (2006)
EGR Control Module: Testing and Inspection
EGR Control System Inspection
1. Verify that ERG valve operation (initial operation) sound is heard when the ignition switch is turned to ON position.
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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: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Descriptions
2. Start the engine and idle it.
3. Warm up the engine to normal operating temperature.
4. Select the following PIDs:
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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 is increased.
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If the EGR valve will increase, inspect the following:
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EGR valve (stuck open or close)
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Wiring harness and connectors (Main relay - EGR valve - PCM)
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If the SEGRP value does not increase, inspect the VSS, APP1, APP2, TP_REL and ECT PIDs. See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/PCM Inspection
8. Stop the vehicle and verify that the SEGRP value returns to 0.