Note. do not confuse this block with ECU controller.
Part numbers for this assembly see here.
Removing
Place the car on the workplace, brake with the parking brake, turn off the ignition. Raise the hood, disconnect the wire terminal "masses" from battery (wrench "on 10").
Note: If the UCH is replaced, it is imperative to read the configurations using the diagnostic tool (diagnostic device DST-12 or DST-14).
The UCH is located under the instrument panel on a bracket to the left of the driver.
Figure 18-1 - UCH (switching unit): 1 - a bolt of fastening of the UCH; 2, 3 - pads of the instrument panel wiring harness to the UCH; 4 - UCH
Pressing the lock and turning the clip, disconnect the connector 2, figure 18-1, instrument panel wiring harness from the UCH.
Disconnect block 3 by clamping its clamps.
Remove bolt 1 securing the UCH (Phillips screwdriver).
Remove the UCH.
Installation
Install in the reverse order of removal.
After replacing the UCH, carry out the necessary operations.