Vehicles without TCL system
Disassembly
To disassemble, perform the following steps in sequence.
Pic. 7.22. Throttle housing: 1 - bolt (2 Nm); 2 - throttle position sensor; 3 - throttle assembly housing; 4 - annular gasket; 5 – the case of a regulator of frequency of rotation of idling assy; 6 – a screw of factory adjustment of frequency of rotation of idling (Fixed SAS, throttle stop screw)
1. Remove the bolts and remove the throttle position sensor (pic. 7.22).
2. Turn away screws and remove the case of a regulator of frequency of rotation of idling in gathering.
3. Remove the throttle valve O-ring.
4. Unscrew the factory idle speed adjustment screw from the throttle body (Fixed SAS, throttle stop screw).
Attention! The Fixed SAS screw is correctly adjusted at the factory so it does not need to be removed. If you still had to unscrew the screw of the factory idle speed adjustment (Fixed SAS), after assembly, adjust the position of this screw.
Cleaning
Clean all parts of the throttle body.
Attention! Do not use solvent to clean the following parts:
- - throttle position sensor;
- – accelerator pedal position sensor;
- – the housing of the idle speed regulator, assy.
Attention! Submerging these parts in solvent will damage the insulation.
Wipe the parts with a clean cloth.
Make sure that there are no deposits in the vacuum channel or fitting. Blow them out with compressed air.
Assembly
Installation is carried out in the reverse order of removal, taking into account the following.
Accelerator pedal position sensor (APS)
Pic. 7.23. Accelerator pedal position sensor (1)
1. Install the accelerator pedal position sensor (APS) as shown in fig. 7.23, and tighten the screws of its fastening.
2. Connect a multimeter between the pins «3» (APS sensor output) And «4» (APS sensor power supply) accelerator pedal position sensor connector and check that when the throttle is slowly opened (until its full opening) resistance gradually increased.
Pic. 7.24. Accelerator Pedal Position Sensor Connector: 1 – «weight»; 2 - sensor-switch of the fully closed throttle position; 3 - power supply of the accelerator pedal position sensor; 4 – an output signal of the gauge of position of a pedal of an accelerator
3. Check the circuit between the contact «2» (fully closed throttle position switch) and contact «1» («weight») (pic. 7.24). When the throttle is fully closed, the circuit should be closed, and when the throttle is open, it should be open.
4. If the circuit is open at full throttle, turn the accelerator pedal position sensor housing clockwise and retest.
5. If there is a malfunction in the sensor, replace the accelerator pedal position sensor.
Throttle position sensor (TPS)
Pic. 7.25. Sensor (1) throttle position (TPS)
1. Install throttle position sensor (TPS) as shown in fig. 7.25, and tighten the screws securing it.
Pic. 7.26. Throttle position sensor connector: 1 - power supply of the throttle position sensor; 2 - output signal of the throttle position sensor; 3 - sensor-switch of the fully closed throttle position; 4 - «weight»
2. Connect a multimeter between the contact «1» (pic. 7.26) (power supply) and contact «2» (output signal) throttle position sensor connector and check that when the throttle is slowly opened (until its full opening) resistance gradually increased.
3. For vehicles without TCL system, check the circuit between terminal «3» (fully closed throttle position switch) and contact «4» («weight») at fully closed and open throttle.
4. If the circuit is open at full throttle, turn the throttle position sensor housing counterclockwise and retest.
5. If there is a malfunction in the sensor, replace the throttle position sensor.
Cars with TCL system
Disassembly
To disassemble, perform the following steps in sequence.
Pic. 7.27. Throttle housing: 1 - bolt (2 Nm); 2 - throttle position sensor (TPS); 3 - throttle assembly housing; 4 - annular gasket; 5 – the case of a regulator of frequency of rotation of idling assy; 6 - hose of the cooling system; 7 - accelerator pedal position sensor (APS); 8 - lever assembly; 9 – a screw of factory adjustment of turns of idling (Fixed SAS, throttle stop screw)
1. Loosen the clamp and remove the coolant hose 6 (pic. 7.27).
2. Remove the bolts and remove the throttle position sensor (TPS).
3. Turn away bolts and remove the gauge of position of a pedal of an accelerator (APS).
4. Turn away bolts and remove knot of the lever in gathering.
5. Turn away bolts and remove the case of a regulator of frequency of rotation of idling in gathering and a lining 4.
6. Turn out the screw of factory adjustment of frequency of rotation of idling (Fixed SAS, throttle stop screw).
Attention! The Fixed SAS screw is correctly adjusted at the factory so it does not need to be removed. If you still had to unscrew the screw of the factory idle speed adjustment (Fixed SAS), after assembly, adjust the position of this screw.
Cleaning
Cleaning is carried out in the same way as for vehicles without a TCL system.
Assembly
Assembly is carried out in the same way as for vehicles without a TCL system.