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EGR System Test (Esteem & Swift)

WARNING: This page does not describe the selected car, but rather 80 other vehicles, including the 2008 Suzuki Reno, 2008 Suzuki Grand Vitara, 2008 Suzuki Forenza, 2007 Suzuki Reno, and 2007 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
  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.
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