Esteem L4-1590cc 1.6L SOHC 0 MFI 16V (1995)
Idle Air Control (IAC) Valve: Testing and Inspection
1. With ignition switch "OFF", disconnect Idle Air Control (IAC) valve coupler.
2. Check resistance between A and B / B and C terminal.
Resistance: 19.3 - 22.3 ohms at 20°C (68°F)
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If it is within specification, proceed to next operation check. If not, replace.
3. Connect IAC valve coupler and warm up engine.
4. Stop engine and disconnect IAC valve coupler with ignition switch OFF.
5. Disconnect IAC valve air hose from air cleaner outlet hose.
6. Connect 12V-battery positive cable to IAC valve B terminal and negative cable to IAC valve A terminal. Try blowing air into air hose and check
that air will not go in (hard to blow). If check result is not satisfactory, replace IAC valve.
