Throttle Body: Service and Repair

Throttle Body (1ZE-FE):

REMOVAL
1. DRAIN ENGINE COOLANT
2. DISCONNECT ACCELERATOR CABLE
3. REMOVE NO. 2 CYLINDER HEAD COVER

4. REMOVE AIR CLEANER HOSE AND CAP WITH MAF METER
a. Disconnect the VSV for EVAP.
b. Disconnect the 2 air hoses from air cleaner cap.
c. Loosen the air cleaner hose clamp bolt.
d. Disconnect the mass air flow meter connector.
e. Disconnect the 3 air cleaner cap clips.
f. Disconnect the air cleaner hose from the throttle body, and remove the air cleaner cap together with the air cleaner hose.




5. REMOVE THROTTLE BODY
a. Disconnect the throttle position sensor connector.
b. Disconnect the IAC valve connector.
c. Disconnect the PCV hose from throttle body.




d. Remove the 2 bolts and disconnect the No. 2 water bypass pipe.




e. Disconnect the 2 water bypass hoses.




f. Remove the 2 bolts, 2 nuts and throttle body from the intake manifold.
g. Remove the throttle body gasket.

INSPECTION




1. INSPECT THROTTLE VALVE
Check that there is no clearance between the throttle stop screw and throttle lever when the closed throttle position.







2. INSPECT THROTTLE POSITION SENSOR
Using an ohmmeter, measure the resistance between each terminal.

INSTALLATION




1. INSTALL THROTTLE BODY
a. Install a new gasket on the intake manifold, as shown in the illustration.




b. Install the throttle body with the 2 bolts and 2 nuts.

Torque: 21 N.m (210 kgf.cm, 15 ft.lbf)




c. Connect the 2 water bypass hoses to the throttle body.




d. Install the No. 2 water by-pass pipe with the 2 bolts.




e. Connect the IAC valve connector.
f. Connect the throttle position sensor connector.
g. Connect the PCV hose to throttle body.

2. INSTALL AIR CLEANER HOSE AND CAP WITH MAP METER
3. INSTALL NO. 2 CYLINDER HEAD COVER
4. FILL RADIATOR WITH ENGINE COOLANT