[Not using SUZUKI scan tool]
1) Using service wire, ground diagnosis switch terminal in monitor
connector.
2) Connect duty meter between duty output terminal and ground
terminal of monitor connector.
3) Set tachometer.
4) Start engine and warm it up to normal operating temperature.
5) Confirm that all accessories (light, A/C, blower fan, etc.) are out
of service.
6) Check idle speed and IAC duty.
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 section.
1. Monitor connector
2. Service wire
3. Duty meter
A: Blank
B: Diagnosis switch terminal
C: Blank
D: Ground terminal
E: Test switch terminal
F: Duty output terminal
NOTE:
Duty values with (*) are applicable to vehicle used at high
place (higher than 2000 m or 6560 ft.)
Above duty values are on duty meter indications (high
voltage rate).
IAC duty can be checked roughly by using voltmeter. IAC
duty to voltage relation is as follows.
– “OFF DUTY METER” is such duty meter that indicates
approx. 100% when terminal voltage is approx. “0V”.
– “V
B
” represents battery voltage while engine of vehicle
being checked is running.
6E1-50
ENGIINE AND EMISSION CONTROL SYSTEM
ENGINE IDLE SPEED AND IAC DUTY
A/C OFF
A/C ON
900
50 r / min.
3 – 30 or *40%
1000
50 r / min.
ON DUTY
METER INDICATION
(%)
OFF DUTY
METER INDICATION
(%)
VOLTMETER
INDICATION
(V)
0
50
100
100
50
0
0
0.5
V
B
V
B