Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 155 Factory Service Manual (1992-1998)65 · Heating and ventilation
65 · Heating & A/C

Third phase

Make
Alfa Romeo
Model
155 Factory Service Manual
Year
1992–1998
Section
Third phase › Third phase
Heating and ventilationThird phase
  1. Press the various buttons shown in the table below
    and check that the illustrated code appears on the
    "TEMP" display each time a button is pressed.

NOTE: Do not press the "AUTO" button as this will
cause the system to pass on to the next self-diagnosis procedure.

BUTTONRELATIVE CODE
56
72
4d
79
bc
AE

Third phase

NOTE: All of the following stages must be carried
out when the vehicle is in the repair shop (internal and external temperatures stabilized between 10 and 30°C).

  1. Press the "AUTO" button.
    The indications given in the illustration below, 6 bars
    (which must stay on for the duration of the phase in progress) must appear on the "AIR" display and none of the leds must be on.
    Illustration showing six bars lit up on an AIR display with no LEDs illuminated
  2. Press the "AIR-" button.
    A plausible passenger compartment air temperature
    value must appear on the "TEMP" display.
    Display showing a numerical temperature reading of 24°C
  3. Press the "AIR+" button.
    A plausible external air temperature value must appear on the "TEMP" display.
    Display showing an external temperature reading of 32°C with a symbol indicating outside conditions

Parts & tools for this job For 1992 Alfa Romeo 155

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.