Prepare the tools "00.2.407" and "00.2.550", read the information from the fault memory of the ECU KSUD of the DME system, turn off the ignition and remove the stiffening plate.
Unlock the SS (fig. 4.125) and disconnect it from the engine crankshaft speed sensor.
Remove the screw (arrow, see Fig. 4.125) and remove the sensor together with the adjusting washers, if installed.
When replacing the automatic transmission, drive disk or toothed wheel of the crankshaft speed sensor, it is necessary to pay attention to the presence of adjusting washers between the automatic transmission housing and the sensor, which regulate the size of the gap between the end of the sensor and the teeth of its disk (0.55±0.2 mm).
When installing a new sensor, it is necessary to measure the distance between the end of the pulse sensor and the teeth of its disk, for which:
- turn the crankshaft clockwise by the central bolt so that the tooth is visible through the hole of the removed sensor (1, Fig. 4.126);
- make sure that the tooth (1) of the sensor is located strictly in the center of the hole;
- using the device "00.2.407" (arrow, Fig. 4.127) or "00.2.550" measure the distance (depth) from the surface of the sensor installation plane to the teeth of the automatic transmission drive disk and record the result of the measurements obtained - "B";
- measure the value of dimension "A" on the sensor body (A, Fig. 4.128);
- get the value of the gap sensor/toothed disk of the drive disk by subtracting the dimension "A" from the dimension "B", get the result, which should be equal to 0.55±0.2 mm;
- using adjusting washers, set the value to 0.55 mm as accurately as possible, as this ensures the accuracy of spark formation.
Upon completion of the replacement of the crankshaft speed sensor, it is necessary to read the information about the faults from the memory of the ECU-KSUD of the "DME" system, eliminate them and erase the information from the memory of the memory.