Throttle body [Toyota Camry Vista-V40]

Check on the car

1. Check the throttle body.

a) Check the smooth operation of the damper drive.

Removal the throttle body

1. Drain the coolant from the engine.

2. Disconnect the accelerator cable.

3. Disconnect the throttle cable from the automatic transmission.

4. Remove the air filter cover and air duct.

a) Disconnect the intake air temperature sensor connector.

b) Disconnect the solenoid valve connector.

c) (With TRC) Disconnect the positive crankcase ventilation and idle speed increase system hoses.

d) Remove the air filter cover and air duct.

5. Disconnect the throttle position sensor connector

6. (With TRC) Disconnect the sub throttle position sensor connector.

7. (With TRC) Disconnect the sub throttle servo connector.



8. (With TRC) Remove the mounting stand by unscrewing the 2 bolts.





9 Remove the idle speed control valve.

10. (Without TRC) Disconnect the air hose.

11. (Without TRC) Disconnect the EGR hose.

12. Disconnect the coolant bypass hoses.







13. Remove the throttle body assembly by removing 4 bolts (with TRC) or 2 bolts and 2 nuts (without TRC).

• Tightening torque - 20 Nm

Disassembling the throttle body

1. Remove the idle speed control valve by unscrewing the 4 mounting screws.





2. (4S-FE, 3S-FE without TRC) Remove the throttle position sensor.



a) (4S-FE) Fix the throttle valve at 45° open.



b) Unscrew the 2 mounting screws and remove the sensor.





3. (3S-FE with TRC) Remove the main and additional throttle position sensors by unscrewing the two mounting screws.



5. (3S-FE with TRC) Remove the auxiliary throttle servo by unscrewing the 4 mounting screws.

Checking the throttle body

1. Clean dirty throttle body parts using a soft brush and carburetor cleaner. Use compressed air to blow out all passages and holes.

Note: Do not clean the throttle position sensor to avoid damaging it.

2. Hang the throttle valve.

Make sure there is no gap between the throttle stop adjusting screw and the throttle lever when the throttle valve is fully closed.

3. Installing and adjusting the throttle position sensor.

Engine 4S-FE

a) Install the throttle position sensor by aligning the throttle shaft and the sensor hole.

Do not allow the sensor to rotate around the axis during installation and do not remove the sensor housing.



b) Insert a 0.40 mm thick flat feeler gauge between the throttle stop adjusting screw and the lever. Check for continuity between the "IDL" and "E2" terminals.





c) If necessary, adjust the throttle position sensor. Loosen the two screws securing the sensor housing, then, by smoothly turning the sensor housing clockwise, find its position when the ohmmeter changes its readings. Fix the sensor housing in this position with two screws.



Engine 3S-FE without TRC

a) Make sure the throttle valve is fully closed.



b) Install the sensor to its original position, turn it 60-120° counterclockwise and insert it into the throttle body.

c) Turn the sensor clockwise and secure it temporarily.



d) If necessary, adjust the sensor:

(1) Insert a 0.40mm thick flat feeler gauge between the throttle stop adjusting screw and the lever. Check for continuity between terminals "IDL" and "E2".



(2) Loosen the two screws that secure the sensor body, and then, by smoothly turning the sensor body clockwise, find its position until the circuit breaks. Fix the sensor body in this position with two screws.



d) Check the throttle position sensor and readjust it if necessary.

Engine 3S-FE with TRC

Auxiliary throttle position sensor

a) Set the auxiliary throttle valve to the fully closed position.

b) Set the auxiliary throttle position sensor to its original position, turn it 120° counterclockwise (to the position shown by the dotted line) and insert into the throttle body.

c) Turn the additional throttle position sensor clockwise and set it to the position shown in the figure.



d) Insert a flat feeler gauge between the throttle stop adjusting screw and the toothed sector. Check for continuity between the "IDL" and "E2" terminals.

Main throttle valve

a) Set the main throttle valve to the fully closed position.

b) Set the main throttle position sensor to its original position, turn it 60-120° counterclockwise (to the position shown by the dotted line) and insert into the throttle body.

c) Turn the main throttle position sensor clockwise and set it to the position shown in the figure. Temporarily tighten the mounting screws.



d) Insert a 0.40 mm thick flat feeler gauge between the throttle stop adjusting screw and the lever. Check for continuity between the "IDL" and "E2" terminals.



d) Slowly turn the sensor clockwise until the circuit breaks. Tighten the sensor mounting screws.

e) Check the sensor and readjust it if necessary.

3. Checking the throttle position sensor.

Engine 4S-FE

a) Insert a 0.70 or 0.90 mm thick flat feeler gauge between the throttle stop adjusting screw and the lever.



b) Using an ohmmeter, measure the resistance between the "IDL" and "E2" terminals of the sensor connector at different throttle positions.



c) Make a corner template as shown in the figure.



d) Set the full throttle angle from vertical to the specifications below.

The full throttle opening angle is 61° or 71°.

Note: The full throttle angle value includes the initial angle value corresponding to the fully closed throttle position.

d) Using an ohmmeter, check the continuity between the "PSW" and "E2" terminals of the throttle position sensor connector at different positions of the throttle plate.



Engine 3S-FE

a) Insert a 0.40 or 0.75 mm thick flat feeler gauge between the throttle stop adjusting screw and the lever.



b) Using an ohmmeter, measure the resistance between the "IDL" and "E2" terminals of the sensor connector at different throttle positions.



c) Measure the resistance between terminals "VTA" and "E2".

• Nominal resistance - 2.5-5.9 kOhm

d) Measure the resistance between terminals "VTA" and "E2" at different throttle positions.

• Throttle valve fully closed - 0.2-5.7 kOhm
• Throttle valve fully open - 2.0-10.2 kOhm

4. Adjust the auxiliary throttle position sensor if necessary.

a) Loosen the two sensor mounting screws.

b) Set the auxiliary throttle valve to the fully closed position.

c) Insert a 0.45 mm thick flat feeler gauge between the throttle adjusting screw and the toothed sector.

c) Connect the ohmmeter to the "IDL" and "E2" terminals of the sensor.

d) Gradually turn the sensor clockwise until the ohmmeter changes its readings, and fix it in this position with two screws.



d) Check the conductivity between the terminals "IDL" and "E2".



6. Install the auxiliary throttle actuator, securing it with 4 screws.

Installing the throttle body

The throttle body is installed in the reverse order of its removal.