900 S Sedan L4-2290cc 2.3L DOHC (1994)
Saab Information Display (SID): Description and Operation
There are three different versions of the SID unit in the dashboard, one for main instrument display panel and two for main instrument display panel 2
(with/ without trip computer).
SID unit 1 incorporates:
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Clock (analogue)
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Outside temperature sensor
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Light sensor (option)
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Audio display (option) SID unit 2 incorporates:
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Clock (analogue)
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Outside temperature display
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Light sensor
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Audio display
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CHECK functions
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BLACK PANEL function
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Trip computer SID unit 3 incorporates:
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Clock (analogue and digital)
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Outside temperature display
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Light sensor
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Audio display
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CHECK functions
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BLACK PANEL function
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Trip computer (advanced)
Clock (Analogue)
All three versions of the SID unit incorporate an analogue clock.
The clock is set by means of the two buttons immediately below it. One of the buttons has a (+) function for putting the clock forward, the other
has a (-) function for putting the clock back.
Clock (Digital)
The digital clock in SID unit 3 is used by the trip computer for calculating the time of arrival and for time alarms.
Every time the analogue clock is adjusted, the digital clock will also be adjusted by the same amount (provided that the clocks have been
synchronized).
The digital clock appears in the display during adjustment.
Outside Temperature Display
Information on the prevailing outside temperature is provided in all three versions. The information comes from outside temperature sensor 286
behind the front spoiler.
Light Sensor
The light sensor, located diagonally above the clock, control the instrument and display lighting in the main instrument display panel, the ACC and
the SID unit's own display in the daytime.
At night, the lighting is control by means of rheostat 16.
Audio Display
The audio system used the SID unit's display for radio, cassette player and CD displays.
When the radio, cassette player or CD player is turned on, the appropriate information will automatically appear on the SID unit's display.
If a CHECK message is activated, the audio display will be replaced by the CHECK message and an acoustic signal will sound at the same time.
CHECK Functions
Should one or more CHECK functions become active, all the other displays disappear except the audio indicator at the bottom. The message
appears in the two lines of the display at the same time as a buzzer sounds and the INFO DISPL lamp lights up in main instrument display panel 2.
The SID unit's display shows the relevant function and if preceded by a plus (+) sign, more than one function is active.
If more than one function is indicated as being active, they will be displayed in the following order of priority:
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TEST BRAKE LIGHTS
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BRAKE LIGHTS FAILURE
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FRONT LIGHTS FAILURE
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REAR LIGHTS FAILURE
