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EGR System Failure (DTC 32)

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION. For wiring diagram, see WIRING DIAGRAMS - 3.3L article in ENGINE PERFORMANCE. After each repair, perform TEST VER-2  .
  1. Start engine. Allow engine to idle for 2 minutes. Disconnect EGR solenoid electrical connector. Disconnect EGR solenoid vacuum supply hose. Connect a vacuum gauge to disconnected hose. If vacuum gauge reads less than 10 in. Hg, repair vacuum supply to EGR solenoid. If vacuum gauge reads more than 10 in. Hg, Go to next step.
  2. Reconnect vacuum hose to EGR solenoid. Disconnect vacuum hose from EGR valve. Connect a vacuum gauge to disconnected hose. While observing vacuum gauge, momentarily increase engine speed to more than 2000 RPM. If vacuum gauge does not read 5 in. Hg, replace EGR valve. If vacuum gauge reads 5 in. Hg, go to next step.
  3. Remove vacuum gauge from disconnected hose. Connect a vacuum pump to EGR valve nipple. Start engine and let idle. Slowly apply vacuum to EGR valve while observing engine idle. If engine idles rough or stalls as vacuum is applied, go to step 5). If engine does not idle rough or stall as vacuum is applied, go to next step.
  4. Remove EGR valve and inspect manifold and tube for restrictions. Repair as required. If no restrictions are found, replace EGR valve.
  5. If engine idles rough or stalls when vacuum is applied to EGR valve in step 3), turn ignition off. At this time, the condition required to set trouble code is not present. EGR SYSTEM FAILURE trouble code occurs when Powertrain Control Module (PCM) performs a test of the EGR system and monitors the oxygen sensor signal for a change. Possible causes are: EGR valve not opening, EGR transfer tube blocked, EGR passages in manifold blocked, failed EGR valve, failed EGR solenoid or failed PCM. Go to next step.
  6. Inspect hoses and connectors. Repair as required. If hoses and connectors are okay, see INACTIVE TROUBLE CODE CONDITION  . Test is complete.
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