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HOMESERVICE MANUALSSUZUKI2001ESTEEM GLX, 4D SEDAN, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM & COMPONENT TESTINGIDLE CONTROL SYSTEMIDLE AIR CONTROL (IAC) VALVEGRAND VITARA
2001 Suzuki Esteem GLX, 4D Sedan, Standard

Grand Vitara

2001 Suzuki Esteem GLX, 4D Sedan, StandardSECTION Grand Vitara
  1. Remove IAC valve electrical connector. Using DVOM, check resistance of IAC valve between terminals "A" and "B", "B" and "C", "D" and "E", and "E" and "F". See Fig 1 . Resistance should be 20-24 ohms between each set of terminals at approximately 68°F (20°C). If resistance is as specified, go to next step. If resistance is not as specified, replace IAC valve and retest system.
  2. Remove IAC valve from intake collector. With electrical connector attached to IAC valve, crank engine for 2 seconds while observing valve. It should move once and then stop as soon as ignition is turned off. If IAC valve plunger does not move as specified, check for poor connections, opens or shorts in wiring. If wiring is okay, replace IAC valve and retest system.
Fig 1: Identifying Idle Air Control (IAC) Terminals (Grand Vitara)
G99J50780Courtesy of SUZUKI OF AMERICA CORP.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.