Grand Vitara 4WD L4-2.4L (2009)
Idle Speed: Testing and Inspection
Idle Speed and IAC Throttle Valve Opening Inspection
Before idle speed check, make sure of the following.
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Lead wires and hoses of electronic fuel injection and engine and emission control systems are connected securely.
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Valve clearance has been is checked according to maintenance schedule.
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Ignition timing is within specification.
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All electrical systems (wipers, heater, lights, A/C, etc.) are out of service.
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Air cleaner has been properly installed and is in good condition.
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There are no abnormal air drawn in from air intake system.
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There are no obstruction in PCV valve or its hoses.
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There are no DTC in ECM.
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Check following item turn OFF by using "Data List" mode on scan tool.
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A/C Comp Relay
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A/C Switch
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Brake Switch
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PSP Switch (P/S signal)
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Electric Load
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Blower Fan
After confirming all items, check idle speed and IAC throttle opening as follows.
NOTE: Before starting engine, place gear shift lever in "Neutral" (M/T model) or selector lever in "P" range (A/T model), and set parking brake and
block drive wheels.
1. Turn OFF ignition switch and connect SUZUKI scan tool to DLC (1).
Special Tool
(A): SUZUKI scan tool (SUZUKI-SDT)