Grand Vitara LTD 2WD V6-2.5L (2001)
Idle Speed/Throttle Actuator - Electronic: Testing and Inspection
Idle Speed/Idle Air Control (IAC) Duty Inspection
Before idle speed/IAC duty check, make sure of the following.
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Lead wires and hoses of engine/emission control systems are connected securely.
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Accelerator cable is adjusted.
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Ignition timing is within specification.
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All accessories (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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ECM (PCM) does not detect any malfunction DTC.
After above items are all confirmed, check idle speed and IAC duty as follows.
NOTE: Before starting engine, place transmission gear shift lever in "Neutral" (shift selector lever to "P" range for A/T vehicle), and set parking brake
and block drive wheels
USING SUZUKI SCAN TOOL
1. Connect SUZUKI scan tool to DLC with ignition switch OFF.
Special tool
(A) : 09931 - 76011
(B) : Mass storage cartridge
(C) : 09931 - 76030
2. Warm up engine to normal operating temperature.
3. Check IAC duty and idle speed by using "Data List" mode of SUZUKI scan tool.
Engine idle speed
A/C OFF : 675 ± 50 r/min.
A/C ON : 800 ± 50 r/min.
IAC duty at specified idle speed:
10 - 50% (at A/C OFF)
4. If duty and/or idle speed is out of specifications, check idle air control system referring to "DTC P0505 IDLE AIR CONTROL SYSTEM