Suzuki Baleno Manual page 1736

6E1-72 ELECTRONIC FUEL INJECTION SYSTEM (G13/G16 ENGINE WITHOUT WU TWC)
1. Junction/fuse block
2. CO adjusting resistor knob
IDLE MIXTURE
(For vehicle without oxygen sensor)
ADJUSTMENT
All vehicles not equipped with oxygen sensor are shipped with their
CO% factory adjusted as follows.
Engine idle mixture CO%
Engine idle speed (rpm)
IAC duty at specified idle speed
Idle mixture adjustment should never be changed from the original
factory setting. However, if during diagnosis, the check indicates
idle mixture to be the cause of a driver performance complaint or
emission failure, the idle mixture can be adjusted using the follow-
ing procedures.
NOTE:
For this inspection and adjustment, exhaust gas tester (CO
meter) and engine tachometer are necessary.
1) Check idle speed/idle air control (IAC) duty according to "IDLE
SPEED/IDLE AIR CONTROL (IAC) DUTY INSPECTION" de-
scribed above.
2) Using exhaust gas tester, check that idle mixture CO% is within
above specification. If it is out of specification, adjust it to specifi-
cation by turning mixture adjusting knob.
NOTE:
Turning idle mixture adjusting knob to "A" increases CO%
(A/F mixture becomes rich) and turning it to "B" decreases
CO% (A/F mixture becomes lean).
3) If idle mixture has been adjusted, check idle speed and IAC
duty.
4) Repeat Step 2) and 3) to adjust idle mixture and idle speed as
specified.
0.8 – 1.3
Refer to "IDLE SPEED/IDLE
AIR CONTROL (IAC) DUTY AIR CONTROL (IAC) DUTY
INSPECTION" in this section.