Contents: Non-TCL models ⤓ Models with TCL ⤓
Non-TCL models
Throttle body components
1 - idle speed controller housing; 2 - gasket; 3 - throttle body; 4 - throttle position sensor; 5 - idle speed adjustment screw.
Disassembly
After unscrewing the bolts, remove the throttle position sensor (4).
Unscrew the screws and remove the idle speed control housing (1).
Remove the damper gasket (2).
Unscrew the factory idle speed adjustment screw (5) from the throttle body.
NOTE: The screw position is adjusted at the factory.
Clean all throttle body parts.
Check for deposits in the vacuum passage or fitting. Blow them out with compressed air.
Assembly
Assembly is carried out in reverse order, taking into account the following:
Install the throttle position sensor (1).
Connect a multimeter between terminals 1 and 2 of the throttle position sensor connector and check that the resistance gradually increases as the throttle valve is slowly opened.
Throttle Position Sensor Connector
1 - Throttle Position Sensor - Power Supply; 2 - throttle position sensor - output signal; 3 - throttle valve closed position sensor switch; 4 - mass.
Models with TCL
Throttle body components
1 - throttle position sensor; 2 - throttle body; 3 - idle speed adjustment screw; 4 - lever assembly; 3 - gas pedal position sensor (accelerator); 6 - cooling system hose; 7 - idle speed controller; 8 - gasket.
Check the circuit between terminal 3 and terminal 4 of the throttle position sensor with the throttle valve fully closed and fully open.
If the circuit is open when the throttle is fully closed, turn the throttle position sensor housing counterclockwise and repeat the test.
If faulty, replace the throttle position sensor.
Disassembly
Loosen the clamp and remove the cooling system hose.
After unscrewing the bolts, remove the throttle position sensor.
After unscrewing the bolts, remove the accelerator pedal position sensor.
After unscrewing the bolts, remove the lever assembly.
Remove the idle speed control valve housing assembly and gasket.
Remove the factory idle speed adjustment screw.
Assembly
Assembly is carried out in reverse order, taking into account the following:
Install the accelerator pedal position sensor (1) as shown in the figure and tighten the screws that secure it.
Connect a multimeter between terminals 3 and 4 of the accelerator pedal position sensor connector and check that when the throttle valve is slowly opened (until it is fully opened), the resistance gradually increases.
Accelerator Pedal Position Sensor Connector
1 - mass; 2 - throttle position sensor; 3 - power supply for the accelerator pedal position sensor; 4 - output signal of the accelerator pedal position sensor.
Check the circuit between terminal 2 and terminal 1. When the throttle is fully closed, the circuit should be closed, and when the throttle is open, the circuit should be open.
If the circuit is open with the throttle valve fully closed, turn the accelerator pedal position sensor housing clockwise and check again.
If there is a malfunction in the sensor, replace the accelerator pedal position sensor.
Install the throttle position sensor (see description for models without TSL).