Contents: Removal and inspection ↓ Installation ↓
Warning: Before performing repair work, read the precautions for repairing the engine management system (see "Precautions when repairing the engine management system").
To perform work on checking and replacing the speed sensor, you will need a multimeter (in voltmeter mode).
Removal and inspection
1. Preparing the vehicle for work (see points 1 and 2 "Preparing a car for maintenance and repair").
2. Pressing the spring clips, disconnect the wiring harness connector from the vehicle speed sensor.
3. Connect the "negative" probe of the voltmeter to the "mass" (to the engine).
4. Turn on the ignition on the car and use a voltmeter to measure the supply voltage at the "+" terminal of the wiring harness connector (the terminal designation is made on the sensor).
[The source is on the website: VazBook.ru]
Note: The voltage at the terminal must be at least 12 V. If the voltage does not reach the connector or is less than 12 V, then the battery is discharged, the power supply circuit is faulty, or the ECU is faulty.
5. With a 22 mm open-end wrench (or by hand) unscrew the sensor.
6. Remove the sensor from the drive.
Recommendation: You can verify that the speed sensor is faulty by replacing it with a known good one.
Installation
We install all removed parts on the car in the reverse order of removal.