SFGE/SFI System 2JZ-GE — IAC Valve Removal, page 41

EG–227
ENGINE – SFI SYSTEM (2JZ–GE)

IAC VALVE REMOVAL
1. REMOVE THROTTLE BODY
(See throttle body removal)
2. REMOVE IAC VALVE FROM THROTTLE BODY
Remove the 2 screws, IAC valve and O–ring.

P11467

IAC VALVE INSPECTION
INSPECT IAC VALVE OPERATION
(a) Apply battery voltage to terminals B1 and B2, and while
repeatedly grounding S1–S2–S3–S4–S 1 in sequence, and
check that the valve moves toward the closed position.

Closed
B1
S3
S1
S4
S2
B2
Battery
P10701

(b) Apply battery voltage to terminals B1 and B2, and while
repeatedly grounding S4–S3–S2–S1–S 4 in sequence,
check that the valve moves toward the open position.
If operation is not as specified, replace the IAC valve.

Open
B1
S3
S1
S4
S2
B2
Battery
P10700

IAC VALVE INSTALLATION
1. INSTALL IAC VALVE TO THROTTLE BODY
(a) Install a new O–ring on the throttle body.
(b) Install the IAC valve with the 2 screws.
2. INSTALL THROTTLE BODY
(See throttle body installation)

New O-Ring
P11468