Corolla Sedan 4-Door L4-1587cc 1.6L DOHC MFI (1997)
(a) Disconnect the IAC valve connector.
(b) Using an ohmmeter, measure the resistance between terminal +B and other terminals (RSC, TSO).
Resistance:
Cold: 17.0 - 24.5 Ohms
Hot: 21.5 - 28.5 Ohms
If resistance is not as specified, replace the IAC valve.
(c) Reconnect the IAC valve connector.
