Workshop Manuals Factory service & repair Aston Martin
01 Introduction and safety02 Electrics03 Body and trim04 Air conditioning05 Diagnostic system (PDU)
Aston Martin DB7 Factory Workshop Manual Volume 2: Electrics, Body and Air Conditioning (1994-1998)04 · Air conditioning
04 · Heating & A/C

Procedure

Make
Aston Martin
Model
DB7 Factory Workshop Manual Volume 2: Electrics, Body and Air Conditioning
Year
1994–1998
Section
Functional check › Procedure
Air conditioningProcedure

Procedure

  1. Select ECO
  2. Select AC
  3. Select fan speed 3
  4. Select fan speed 2
  5. Select MAX temperature
    allow in-car temperature to stabilise
    (Passenger side underscuttle panel must be in place)
  6. Select MIN temperature and mid face level
  7. Select DEMIST and full heat
  8. System check now complete

Normal System Reaction

Blower flaps revert to fresh air position

Engine revs change then stabilise

Small increase in fan speed

Fan speed lower
Centre vent and dash end cold
footwell cool

Hot air from footwell,
warm from dash end

System goes to full cooling automatically
Cold air from all vent except from screen vent
Centre vent open
Blower at re-circulation

Demist vents open, centre vent closes and
blower flaps revert to fresh air position

System good.

Note: A small amount of air will bleed from the ends of the demist-defrost vents in all cases, but there should be no leak along the length of the vents.

Parts & tools for this job For 1994 Aston Martin DB7

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