Component Inspection

1. Except California Spec.:
INSPECT IAC VALVE RESISTANCE

NOTE: "Cold" and "Hot" in the following sentences express the temperature of the coils themselves. "Cold" is from -10 °C (14 ° F) to 50 °C (122 °F) and "Hot" is from 50 °C (122 °F) to 100 °C (212 °F).




Using an ohmmeter, measure the resistance between terminal +B and other terminals (RSC, RSO).

Resistance:
Cold: 17.0 - 24.5 ohms
Hot: 21.5 - 28.5 ohms

If resistance is not as specified, replace the IAC valve.




2. Except California Spec.:
INSPECT IAC VALVE OPERATION
a. Connect the positive (+) lead from the battery to terminal +B and negative (-) lead to terminal RSC, and check that the valve is closed.




b. Connect the positive (+) lead from the battery to terminal +B and negative (-) lead to terminal RSO, and check that the valve is open.




3. California Spec.:
INSPECT IAC VALVE OPERATION
a. Check that the IAC valve is halfly opened.
b. Connect the IAC valve connector to the IAC valve.
c. Disconnect the ECT sensor connector from the ECT sensor.
d. Turn the ignition switch ON.
e. Check that the IAC valve moves.

HINT: Repeat connecting and disconnecting of IAC valve connector several times and check the operation of the valve.

If operation is not as specified, replace the IAC valve.

f. Turn the ignition switch OFF.
g. Reconnect the ECT sensor connector to the ECT sensor.
h. Disconnect the IAC valve connector from the IAC valve.