X-90 (2WD) L4-1591cc 1.6L SOHC MFI (1997)
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7) Disconnect IAC valve air hose from air intake case. Try blowing air into air hose and check that air will not go in (hard to blow).
8) Connect 12V-battery to IAC valve terminals and check that air can be blown into air hose.
If check results are described above, check IAC valve harness.
If not, replace IAC valve.
9) Connect hose and coupler securely.
