Vehicles since 1999
Removing
Disconnect the wire from the negative battery terminal.
To remove, perform the following steps in sequence.
1. Drain the coolant from the engine cooling system.
2. Relieve fuel pressure (fuel splash prevention).
3. Remove the intake air hose.
Pic. 8.19. Throttle body of cars since 1999 of release: 1 - throttle servo connector; 2 - bolt (19 Nm); 3 – connection of a hose of system of cooling; 4 – a socket of the gauge of position throttle; 5 - throttle body; 6 - gasket housing throttle assembly
4. Disconnect throttle position sensor connectors 4 (pic. 8.19) and throttle servo 1.
5. Loosen the clamps and remove the cooling system hoses 3.
6. Unscrew the bolts and remove the throttle body 5 and gasket 6.
Disassembly
To disassemble, perform the following steps in sequence.
Pic. 8.20. Removing the throttle position sensor: 1 - throttle position sensor; 2 - throttle body
1. Unscrew the bolts and remove the throttle position sensor 1 (pic. 8.20).
Assembly
To assemble, perform the following steps in sequence.
1. Position the throttle position sensor on the throttle body as shown by the dotted line in Figure 8.21.
Pic. 8.21. Installing the Throttle Position Sensor
2. Turn the throttle position sensor counterclockwise (pic. 8.21) and tighten the sensor mounting bolts.
Pic. 8.22. Pin assignment on throttle position sensor connector: 1 – output of power supply to the sensor; 2 - output of the 1st channel of the throttle position sensor; 3- «weight»; 4 - output of the 2nd channel of the throttle position sensor
3. Measure the resistance between the contact «1» (pic. 8.22) (power supply to the sensor) and contact «2» (throttle position sensor channel 1 output), as well as between contact «1» (power supply to the sensor) and contact «4» (Throttle position sensor channel 2 output).
4. When slowly opening the throttle from its fully closed position to its fully open position, the resistance should change smoothly in accordance with the throttle opening angle.
5. If the value of the measured voltage is outside the nominal values or does not change smoothly, then replace the throttle position sensor.
Installation
Installation is carried out in the reverse order of removal, taking into account the following.
Pic. 8.23. Protrusion Location (1) when installing gasket
Install the gasket so that its protruding part is located between the intake manifold and the throttle body as shown in Fig. 8.23.
When replacing the throttle body, reset the electronic throttle control system as follows.
1. Turn the ignition key to position «ON» («ON») and then within 1 s move it to position («LOCK–OFF»). Leave the ignition key in position «LOCK–OFF» for at least 10 s.
2. Fill in cooling liquid in the engine cooling system.
3. Install the intake air hose.
Vehicles since 2001
Removing
Disconnect the wire from the negative battery terminal.
Remove the engine cover.
To remove, perform the following steps in sequence.
1. Drain the coolant from the engine cooling system.
2. Relieve fuel pressure (fuel splash prevention).
3. Remove the air filter.
Pic. 8.24. Throttle body of cars from 2001 of release: 1 - connector throttle position sensor; 2 – a hose of system of cooling; 3 - bolt (19 Nm); 4 - support of the throttle body; 5 - bolt 24 Nm; 6 - bolt, 5 Nm; 7 – the sensor of malfunction of system of ignition; 8 – connection of a fuel hose of a high pressure; 9 - ring gasket (lubricate); 10 – connection of a hose of system of cooling; 11 - bolt, 9 Nm; 12 - hose of the cooling system; 13 - body of the throttle assembly; 14 – a socket of a servo drive of a regulator of frequency of rotation of idling; 15 - gasket housing throttle assembly
4. Disconnect connectors 1 (pic. 8.24) throttle position sensor and idle speed control servo 14.
5. Unscrew bolts and remove the gauge of malfunction of system of ignition 7.
6. Loosen the clamp and remove the cooling system hose 2.
7. Loosen the clamp and disconnect the cooling system hose 10.
8. Unscrew the bolts and remove the high pressure fuel hose connection 8 and the O-ring 9.
9. Unscrew the bolts and remove the throttle body support 4.
10. Unscrew the bolts and remove the throttle body 13.
11. Loosen the clamp and disconnect the cooling system hose 12.
12. Remove the gasket 15 of the throttle body.
Installation
Installation is carried out in the reverse order of removal, taking into account the following.
1. Install the gasket so that its protruding part is located as shown in fig. 8.23.
2. Apply a small amount of clean engine oil to the O-ring.
Attention! Do not allow engine oil to enter the fuel manifold.
3. Rotate the high pressure fuel hose to the left and right, connect it to the fuel manifold, being careful not to damage the O-ring. At the end of the operation, make sure that the fuel hose rotates easily.
4. If the fuel hose turns in its seat with jamming, then it is possible that «bitten» ring gasket. Disconnect the high pressure fuel hose, check the condition of the O-ring (replace if damaged), reconnect the fuel hose and check the build quality (the fuel hose should rotate easily).
5. Tighten the fastening bolts with a nominal torque of 5.0 Nm.