Central module
- Make
- Alfa Romeo
- Model
- 156 Factory Service Manual
- Year
- 1997–2002
- Section
- Instruments › Central module
CENTRAL MODULE
- 1, Fuel level gauge
- 2, Reserve warning light
- 3, Analogue clock
- 4, Engine coolant temperature gauge
- 5, Maximum temperature warning light
The module includes:
fuel gauge, with reserve warning light
engine coolant temperature gauge, with maximum temperature warning light
analogue clock
The fuel level is displayed by an electronic circuit inside the module, which operates the gauge and also the warning light for the reserve (about 7 litres).
The internal software 'dampens' the signal to prevent fluctuations.
When the ignition is turned on, the warning light comes on for about 4 seconds as a self-test, then goes out.
If it flashes and stays on, a fault has been detected in the connection or the level gauge.
The coolant temperature gauge is controlled directly by a sensor on the engine.
The maximum temperature warning light is controlled by a sensor on the engine with another signal, independent of the gauge.
During starting, when the ignition is turned on, the maximum temperature warning light comes on for about 4 seconds as a self-test, then goes out.
The analogue clock consists of a face with hour and minute hands. It is electronic with a quartz oscillator. It is adjusted by means of a button inside the dial.
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