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EGR System Test (Esteem & Swift)

  1. Place transaxle in Park (A/T) or Neutral (M/T). Apply parking brake. With coolant temperature less than 104°F (40°C), start engine and operate at high RPM. EGR valve diaphragm should not move/retract.
  2. Warm engine to normal operating temperature. Operate engine at high RPM. EGR valve diaphragm should move up and return to closed position on deceleration to normal idle.
  3. If EGR valve does not operate as specified, check for misrouted, restricted, clogged or deteriorated vacuum hoses. If vacuum hoses are okay, check EGR valve, EGR solenoid vacuum valve and EGR pressure transducer.
  4. If a Diagnostic Trouble Code (DTC) is present, see appropriate DTC chart in SELF-DIAGNOSTICS article in ENGINE PERFORMANCE section.