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Integrated Electronic EGR Valve
- With ignition off, connect vacuum gauge to EGR valve. Apply vacuum and observe EGR valve. EGR valve should not move. If valve moves, check that vent filter is unrestricted and replace EGR valve (if necessary).
- Turn ignition on and repeat Step 1). When applying vacuum, EGR valve should not move. If EGR valve moves, a fault exists in ECM or electrical circuits. See appropriate C-7 CHART in the COMPUTERIZED ENGINE CONTROLS section for further diagnosis.