Exhaust Gas Recirculation: Testing and Inspection

System Operation
1. Connect the Special Service Tools (SST)s, (Engine Signal Monitor and Adaptor Harness) to the powertrain control module engine (PCME) as shown.
2. Start the engine.
3. While the engine is still cold, accelerate the engine and verify that PCME terminal 3-O, 3-P voltage are B+.
4. Warm up the engine to normal operating temperature and let it idle.
5. Accelerate the engine and verify that Engine Signal Monitor's green and red lights flash at PCME terminal 3-O, 3-P.
6. Disconnect the EGR solenoid valve (Vacuum side) connector.
7. Apply B+ and a ground to the solenoid valve as shown.
8. Verify that the engine runs roughly or stalls at idle.