Toyota 1 MZ–FE Manual page 274

EG2–274
1MZ–FE ENGINE – SFI SYSTEM
IAC VALVE REMOVAL
(See Components for Removal and Installation)
1. REMOVE THROTTLE BODY
(See page EG2–266)
2. REMOVE IAC VALVE
Remove the 4 screws, IAC valve and gasket.
IAC VALVE INSPECTION
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.
If operation is not as specified, replace the IAC valve.
IAC VALVE INSTALLATION
(See Components for Removal and Installation)
1. INSTALL IAC VALVE
(a) Place a new gasket on the throttle body.
(b) Install the IAC valve with the 4 screws.
2. INSTALL THROTTLE BODY
(See page EG2–269)