Warning! Before starting work, read the precautions for repairing the engine management system (see "Precautions when repairing the engine management system").
You will need a multimeter to do the job (in voltmeter mode).
Removal and inspection
1. We prepare the car for work (see "Preparing the car for maintenance and repair").
2. By pressing the spring clips, disconnect the wiring harness block from the vehicle speed sensor.
3. Connect "negative" voltmeter probe to "mass" (to the engine).
4. Turning on the ignition, use a voltmeter to measure the supply voltage at the output "+" wiring harness pads (output designation is made on the sensor).
Comment. The voltage at the output must be at least 12 V. If the voltage is not supplied to the block or it is less than 12 V, then the battery is discharged, the power circuit is faulty or the computer is faulty.
5. Open end wrench by 22 mm (or by hand) unscrew the sensor and remove the sensor from the drive.
Advice. You can verify that the speed sensor is faulty by replacing it with a known good one.
Installation
Install the sensor in reverse order.