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Home >> Ford >> 2003 >> Excursion 4WD V8-6.0L DSL Turbo >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> 8. Exhaust Gas Recirculation (EGR) System Test
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8. Exhaust Gas Recirculation (EGR) System Test





8. Exhaust Gas Recirculation (EGR) System Test

Purpose:

The purpose of this test is to make sure the EGR system is operating correctly.

EGR System Test

^ Check the EGR actuator connectors
^ Check the EGR actuator circuitry.






Recommended Procedure:

^ Connect the scan tool.
^ Engine at operating temperature.
^ Key ON engine OFF.

Note: Refer to the scan tool operating manual for instructions.

^ Access the EGR System Test on the scan tool.
^ Carry out the EGR System Test and follow the directions on the scan tool.
^ If there are no DTCs present all tests pass and all PIDs displayed are in range the system is operating correctly at this time. Clear the DTCs repeat the self-test.
^ If any of the tests do not pass refer to the pinpoint test that corresponds to the PID that is out of range.

Possible Causes:

^ EGR flow related components and circuitry
^ PCM

Tools Required:

Scan tool
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