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Home >> Suzuki >> 1996 >> Sidekick JS, 2D Utility, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - 1.6L >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION (EGR) >> EGR System Test (Sidekick 1.6L)

EGR System Test (Sidekick 1.6L)

  1. Raise and support vehicle. Place transmission in Neutral. Start engine. Increase engine RPM and ensure EGR valve does not operate with coolant temperature less than 131°F (55°C). Go to next step.
  2. Allow engine to reach normal operating temperature. Increase engine RPM and observe EGR diaphragm. If diaphragm moves, go to next step. If diaphragm does not move, check for misrouted, restricted, clogged or deteriorated vacuum hoses. If vacuum hoses are okay, check EGR valve. See EGR VALVE below. If EGR valve is okay, check EGR pressure transducer. See EGR PRESSURE TRANSDUCER below. If EGR pressure transducer is okay, go to step 4).
  3. Using a shop towel or glove, open EGR valve by hand with engine running. Engine should idle rough or stall. If idle does not change, remove EGR valve and clean EGR passage. Retest system. If engine runs rough or stalls, system is okay.
  4. Check EGR solenoid vacuum valve, EGR system check valve, related components and PCM. See DTC P0400 in BASIC TESTING - 1.6L article. Since many computer-controlled and monitored components set a Diagnostic Trouble Code (DTC) if they malfunction, also perform procedures in TESTS W/CODES - 1.6L article.
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