17 · Electrical

Check auxiliary instruments

Make: Alfa Romeo
Model: Brera and Spider Factory Service Manual
Year: 2005–2010
Section: Instruments › Check auxiliary instruments

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Electrical equipmentCheck auxiliary instruments

CHECK AUXILIARY INSTRUMENTS

Check 5560BW

STEP	CHECK TO BE PERFORMED	RESOLUTION IF THE CHECK IS NOT OK
1	Check the protected power supply from the instrument panel. Connect an Examiner in Voltmeter mode with the positive probe connected to pin 3 and the negative to pin 2 of the 9-way auxiliary instrument connector. With the key on, the voltage reading should be approximately 12 volts.	1.Restore the +12V power connection. 2. Restore the earth connnection across the instrument panel and auxiliary instruments. If the power supply is not OK, replace the instrument panel. If OK, replace the auxiliary instruments.
2	Check serial line 1. Disconnect instrument panel connector C and the 9-way auxiliary instrument connector: Check the continuity of the wiring between pin 1 of instrument panel connector C and pin 1 of the auxiliary instrument connector. Check the line earth insulation.	Restore the continuity/insulation of the serial line. If the checks on the power supply and serial line are OK, replace the auxiliary instruments. If there is no serial line signal at the panel output, replace the instrument panel.

STEP

CHECK TO BE PERFORMED

RESOLUTION IF THE CHECK IS NOT OK

Check the protected power supply from the instrument panel. Connect an Examiner in Voltmeter mode with the positive probe connected to pin 3 and the negative to pin 2 of the 9-way auxiliary instrument connector. With the key on, the voltage reading should be approximately 12 volts.

1.Restore the +12V power connection.

2. Restore the earth connnection across the instrument panel and auxiliary instruments. If the power supply is not OK, replace the instrument panel. If OK, replace the auxiliary instruments.

Check serial line 1. Disconnect instrument panel connector C and the 9-way auxiliary instrument connector: Check the continuity of the wiring between pin 1 of instrument panel connector C and pin 1 of the auxiliary instrument connector. Check the line earth insulation.

Restore the continuity/insulation of the serial line. If the checks on the power supply and serial line are OK, replace the auxiliary instruments. If there is no serial line signal at the panel output, replace the instrument panel.

AUXIILARY INSTRUMENT UNIT

The module located in the centre of the dashboard, directed towards the driver at an angle of 20 degrees.

It comprises three panels including:

fuel level gauge with reserve warning light
engine coolant temperature gauge with overheating warning light
engine oil temperature gauge (petrol versions)
turbo pressure gauge (JTD versions).

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