IDLE SPEED/IAC DUTY INSPECTION
Before idle speed/IAC duty check, make sure of the following.
Lead wires and hoses of Electronic Fuel Injection system is con-
nected securely.
Accelerator cable has some play, that is, it is not tight.
Valve lash is checked and adjusted according to maintenance
schedule.
Ignition timing is within specification.
All accessories (wipers, heater, lights, A/C, etc.) are out of service.
Air cleaner has been properly installed and is in good condition.
No abnormal air inhaling from air intake system.
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 (1) with ignition switch OFF.
Special Tool
(A): 09931-76011 (SUZUKI scan tool)
(B): Mass storage cartridge
(C): 09931-76030 (16/14 pin DLC cable)
2) Start engine and warm it up to normal operating temperature.
3) Check idle speed and IAC duty by using “DATA LIST” mode of
SUZUKI scan tool.
NOTE:
Check to ensure that radiator fan is not running and then
measure IAC-duty.
If duty and/or idle speed is out of specifications, inspect idle air
control system referring to B-4 IDLE AIR CONTROL SYSTEM
CHECK in this system.
6E1-46
ENGIINE AND EMISSION CONTROL SYSTEM
SH410
ENGINE IDLE SPEED AND IAC DUTY
A/C OFF
A/C ON
800
50 r/min.
5 – 35%
1000
50 r/min.