- multimeter (in voltmeter and ohmmeter mode);
- wire segments.
Examination
1. We prepare the car for work (see "Preparing the car for maintenance and repair").
2. We release the clamp of the wiring harness block and disconnect the block from the throttle position sensor.
3. Connect "negative" voltmeter probe to "mass" engine.
4. Turning on the ignition, connect "positive" voltmeter probe to terminal A of the wiring harness block (pin numbering is printed on the block), and measure the supply voltage.
Note: The supply voltage at terminal A of the block should be about 5 V. If the voltage is not supplied to the block or it is less than 5 V, then the power circuit is faulty or the computer is faulty.
Warning! Turn off the ignition after the voltage measurement is completed.
Removing
1. Using a Phillips screwdriver, unscrew the two screws securing the idle speed controller to the throttle body.
2. Remove the throttle position sensor from the damper axis. The connection of the sensor to the throttle body is sealed with a foam ring.
Tip: You can verify that the throttle position sensor is bad by replacing it with a known good one.
Installation
1. We put the sensor on the axis of the throttle actuator so that its leads are directed towards the partition of the engine compartment.
2. Slightly turn the sensor relative to the throttle valve axis until the holes for its fastening screws are aligned with the threaded holes in the throttle body.
3. We wrap the sensor mounting screws.
Recommendation: Open the choke by turning the throttle actuator sector as far as it will go. If this cannot be done, then the sensor is not installed correctly. It is necessary to remove the sensor from the throttle valve axis and reinstall it relative to the axis by 90°.
4. After making sure that the sensor is installed correctly, we attach the wiring harness block to it.