Esteem GLX Wagon L4-1.8L (1999)
Idle Speed/Throttle Actuator - Electronic: Testing and Inspection
Idle Speed/Idle Air Control (IAC) Duty Inspection
IDLE SPEED/IDLE AIR CONTROL (IAC) DUTY INSPECTION
Before idle speed/IAC duty check and adjustment, make sure of the following.
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Lead wires and hoses of engine and emission control systems are connected securely.
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Accelerator cable has some play, that is, it is not tight.
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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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No abnormal air inhaling from air intake system.
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.
1. Connect SUZUKI scan tool to DLC with ignition switch OFF, if it is available.
Special tool:
(A): SUZUKI scan tool
(B): Mass storage cartridge
(C): 14/16 pin DLC cable
2. Warm up engine to normal operating temperature.
3. Check engine idle speed and IAC duty as follows:
When using SUZUKI scan tool:
1. Select "Data List" mode on scan tool to check IAC duty.
When using duty meter:
1. Disconnect scan tool from DLC if connected.
2. Using service wire, ground "Diag. switch terminal" in monitor (Diag.-1) connector and connect duty meter between "Duty output terminal" and
