Workshop Manuals Factory service & repair Alfa Romeo
01 General information02 Specifications03 Manufacturing data and tolerances04 Tightening torques05 Fluids and lubricants06 Maintenance07 Diagnostic checks08 Engine09 Clutch10 Gearbox and differential11 Transmission (4x4)12 Axles and driveshafts13 Brakes14 Steering15 Suspension and wheels16 Heating, air conditioning and auxiliary units17 Electrical equipment18 Body fittings19 Body panels and frame20 Wiring diagrams and electrical functions21 Wiring harnesses22 Connectors and pin-outs23 Fault diagnosis24 Special tools
Alfa Romeo Brera and Spider Factory Service Manual (2005-2010)20 · Wiring diagrams and electrical functions
20 · Electrical

Brake lights - functional description

Make
Alfa Romeo
Model
Brera and Spider Factory Service Manual
Year
2005–2010
Section
Exterior lighting › Brake lights - functional description
Wiring diagrams and electrical functionsBrake lights - functional description

BRAKE LIGHTS - FUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTION

The switch I30 receives an ignition-controlled supply (INT) from the fuse line F37 in the junction unit under the dashboard B2: when the brake pedal is pressed, the N.A. switch closes and sends a signal which "passes through" the junction unit under the dashboard B and reaches the Body Computer M1, pin 2 of connector F.

The Body Computer M1 controls the power supply for the brake lights located in the light clusters F30 (left) and F31 (right) from pins 32 and 22 of connector E.

The Body Computer M1 is connected via the CAN line to the instrument panel E50 to manage the lights failure warning light and the brake lights check signal if problems are detected in the circuit or in the fuse.

The switch I30 controls central brake light F40 directly without any control rules, via the junction unit under the dashboard B2, pin 5 of connector D.

Parts & tools for this job For 2005 Alfa Romeo Brera

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