Fourth phase

4. Press the "TEMP-" button and then the "TEMP +" button.

The mixed air temperature values (directed to the vehicle via the upper and then the lower parts of the heater-distributor assembly) must appear on the "TEMP" display.

5. Press the "OFF" button for at least two seconds.

As the vehicle is stationary "0" should appear on the "TEMP" display. If the vehicle were moving faster than 30 kph, the value on the display would increase to "1".

6. Press the "RIC" button.

One of the values representing the position of the air distribution vents must appear on the "TEMP" display (see: Fourth phase - Point 10).

7. Press the "ECON" button (for version A) and "VENT" button (for version B).

A code indicating the position of the electronic speed regulator must appear on the "TEMP" display. Any code other than "00" or "FF". will indicate that the system is operating correctly.

Fourth phase

1. Press the "AUTO" button.

The indications given in the illustration below, 8 bars (which must remain for the entire duration of the phase in progress) must appear on the "AIR" display and none of the leds must be on.

2. Repeatedly press the "AIR +" button.

Each time the button is pressed the electric fan must be heard to increase in speed while a sequence of codes starting from a value of "C" up to a value of "3F" must appear on the "TEMP" display: C, E, 10, 12, 14, 16, 18, 1A, 1C, 1E, 20, 22, 24, 26, 28, 2A, 2C, 2E, 30, 32, 34, 36, 38, 3A, 3C, 3E, 3F.