Workshop Manuals Factory service & repair Alfa Romeo
01 General data and specifications02 Maintenance03 Diagnosis – checks04 Engine (1.6 and 2.0 Twin Spark)05 Clutch06 Gearbox (manual and Selespeed)07 Front axle08 Brakes, ABS and traction control09 Steering10 Suspension and wheels11 Heating, air conditioning and washers12 Electrical equipment13 Body14 Body panels and reinforcement15 Wiring diagrams16 Connectors and pin-outs17 Wiring harnesses18 Fault diagnosis19 Special tools
Alfa Romeo 147 Factory Service Manual (2000-2002)12 · Electrical equipment
12 · Electrical

Speedometer

Make
Alfa Romeo
Model
147 Factory Service Manual
Year
2000–2002
Section
Instruments › Speedometer
Electrical equipmentSpeedometer

SPEEDOMETER

Analogue control panel – operation

The task of the instrument panel connector is to:

  • Receive and transmit information at the B-CAN network
  • Manage the subsiduary functions
  • Receive and manage signals outside the network
  • Display the vehicle operating stage

The diagram illustrates the main connections for the Instrument Panel Connector

The instrument panel connector functions are listed below

SPEEDOMETER

The speedometer shows speeds of between 0 km/h and 240 km/h.

The scale is in km/h, on variants which have an imperial system there is a dual scale.

The instrument panel receives information concerning the speed expressed in km/h via the B-CAN line and then displays it using the index which is moved by a P/P motor

The speed information comes from the NBC, which calculates the speed using the wheel rpm signal from the NFR (ABS) and the measurement of the wheel circumference memorized in the NBC

For speeds of between 0 and 4 km/h, the index remains stationary i the rest position. At higher speeds, the speed is signalled.

Parts & tools for this job For 2000 Alfa Romeo 147

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