Warning! Before performing the operation, read the precautions for repairing the engine management system (see "Precautions when repairing the engine management system").
To complete the work you will need:
- 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 pads of the wiring harness.
Disconnect the wiring harness 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.
Comment. 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.
Advice. You can verify that the throttle position sensor is faulty by replacing it with a known good one.
Installation
1. We put the sensor on the axis of the throttle actuator.
Warning! For a properly installed sensor, the leads should be directed towards the bulkhead of the engine compartment.
2. Holding the sensor in a position in which the holes for the mounting screws are aligned with the threaded holes in the throttle body, turn the throttle drive sector until it stops.
Warning! If this cannot be done without rotating the sensor body, then the sensor is not installed correctly. Remove the sensor from the throttle shaft and install in a different position.
3. After making sure that the sensor is installed correctly, we wrap the screws for its fastening and attach the wiring harness block.