Volvo 940 Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Componentes e acessórios para veículos motorizados Volvo 940. Volvo 740 & 940 Mechanical Climate Control Manual do Utilizador

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Volvo 740 & 940 Mechanical Climate Control (Standard
A/C) to Electronic Climate Control conversion
Brief History
Electronic Climate Control, or ECC, was first introduced as standard
equipment on the face-lift 760 from 1988, as well as on 780 of the same year.
From 1990 ECC was offered as an option on 740's, and it was also available as
an option on 940 right from the start in 1991 (Although actual availability
depends on market region see below). The early 960’s up to 1994 had ECC
as standard equipment, although an interesting version of ECC without A/C
appeared on European 960’s from 1993 as another option. From 1995 the
960 was also available with either standard A/C (which Volvo calls Mechanical
Climate Control, or MCC) or just basic heating without A/C, the ECC without
A/C option was dropped at the same time.
In the North American market (USA / Canada), ECC was not offered as an
option on their 740 & 940 at all, while ALL of the 960 & S/V90 has ECC as
standard equipment. In Australia the 740 & 940 received ECC as standard
equipment on both Turbo and 16 Valve models from 1990 (the 8 Valve
naturally aspirated models retained MCC), and Ive also seen late model 960
(1995 onwards) with MCC in Australia.
System Description
The most important component of the ECC is the control panel itself, which is
basically a small computer receiving inputs from 3 temperature sensors
(ambient temp. sensor near the blower fan, engine temp. sensor near the
heater matrix, interior temp. sensor hidden in the dome light), and a solar
sensor on the dash. The control panel sends output signal to the servomotor
which adjusts the hot air mixer shutter, solenoid valve to redirect vacuum for
operating the airflow distribution shutters, and the blower fan which it controls
fan speed, via a power stage which amplifies the signal. The control panel for
ECC has 3 rotary dials, the left dial for fan speed (AUTO, then 0 to 5), middle
dial for mode (AUTO, or panel vents, floor, bi-level, defrost, and defrost /
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Resumo do Conteúdo

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Volvo 740 & 940 Mechanical Climate Control (Standard A/C) to Electronic Climate Control conversion Brief History Electronic Climate Control,

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butyl off with carby cleaner, and I even got it off my Burberry shirt without damaging or discolouring the fabric! Before you put the dash back, if y

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connected to the back of the control panel, where the selection is made mechanically. On the ECC this is done electronically throug

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attached, sealed with hot glue. Above : The vacuum hose plugged into the solenoid valve. Volvo actually mentioned in the Climate Control service bo

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floor), the right dial is for setting the desired temperature, either in Celsius or Fahrenheit depending on the market. The interior temp. sensor

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MCC and ECC. When I was finally convinced that the conversion is possible, I started collecting ECC parts whenever I came across them, on eBay and

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The Conversion I started by removing everything on the dash, including instrument cluster, radio console, old MCC control panel, glove box... etc, th

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the same type of 4-pin connector as the rear of the speedometer for late 740's and early 940’s so they’re not hard to find. This type of dome

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Above : This was psychologically the worst part of the conversion. I was looking at that mess and thinking to myself "Oh my god, wha

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Above : Modified blower fan housing, ready to be installed. The object in the foreground with lots of cooling fins is the power stage. I have also

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clean out all the yucky, sticky, deteriorating black foam. A lot of it blew out through the vents a few years ago, but I vacuumed off what's left

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quite stubborn and there isn’t a lot of room to work with. Both the servomotor and solenoid valves are fitted onto a metal pla

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