Sidekick JX 2D 4WD L4-1.6L (1998)
Auxiliary Air Valve (Idle Speed): Testing and Inspection
Fast Idle Air Valve
Using Suzuki Scan Tool
1) Connect SUZUKI scan tool to DLC with ignition switch OFF.
2) Warm up engine to normal operating temperature and keep it idle speed.
3) Check that "IAC DUTY" value displayed on SUZUKI scan tool increases when idle air adjusting screw is tightened and reduces when
loosened.
If check result is as described above, idle air adjusting screw and its passage are in good condition.
If not, idle air adjusting screw is faulty or air passage is clogged.
Not Using Suzuki Scan Tool
1) Using service wire, ground diagnosis switch terminal in monitor coupler and connect duty meter (or volt meter) between duty output terminal
and ground terminal of monitor coupler.
2) Warm up engine to normal operating temperature and keep it running
at idle speed.
3) Check that idle air control duty value indicated by duty meter (or volt meter) increases when idle air adjusting screw is tightened and reduces
when loosened.