L

initiate the testing step for the air-conditioning control to the LH control unit (terminal 14).

Display:

Initiate the testing step for speed reduction on automatic vehicles.

Display:

Set the air distribution slide switch to up / down.

Switch on the air-conditioning system briefly (AC pushbutton). The LED must go out and the following display will appear.

Display:

Note:

This testing step does not apply to vehicles with manual gearboxes. Press the green key untii the clear symbol appears.

After a short period, the display 1000 will appear, i.e. output terminated.

If this is not the case, there may be a fault in the wiring, in the event of an error, check with reference to the circuit diagram.

Switch off the ignition

The functional check of actuator and input signals is thus terminated.

Move the selector lever from the P or N position to a drive position. The LED must go out and the following display will appear.

Display:

In the event of an error, check with reference to the circuit diagram.

Press the green key until the clear symbol appears. After a short period the display 1000 will appear, i.e. output terminated.

Switch off the ignition

The functional check of actuator and input signals is thus terminated.

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