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Alfa Romeo 145/146 Electrical System Diagnosis Manual, Volume 3 (1994-2001)01 · 145 electrical system diagnosis
01 · Diagnostics

General description

Make
Alfa Romeo
Model
145/146 Electrical System Diagnosis Manual, Volume 3
Year
1994–2001
Section
Radio Telephone Provision › General description
145 electrical system diagnosisGeneral description

GENERAL DESCRIPTION

On request, the car can be fitted with a provision for installing a cellular telephone.

This provision comprises:

  • a “dual purpose” aerial (the same as for the radio) with a specific connection cable;
  • voice function speaker on the passenger's door. This is the same speaker as for the radio with two connections: one for the radio and one for the cell phone “voice” feature;
  • supply connection, for charging the cell phone; this is located next to the radio and also acts as a support for the telephone.

The connection for the phone has two supplies; one is direct and one is key-operated; there is also a supply when the side lights are on, for lighting the phone, if fitted.

FUNCTIONAL DESCRIPTION

The provision connection G397 receives the direct supply (pin 9) from the battery through the line of fuse F16 of fusebox G1.

It receives the “key-operated” supply (pin 7) through the line of fuse F15 of fusebox G1- When the side lights are on the supply reaches pin 8 through the line leading from the steering column lever unit (see “Side-lights”).

Pin 10 of the provision connection G397 is earthed, while pins 5 and 6 supply the signal to the speaker O5a, connector B, while connector A is the one for the radio (see “Radio”).

Pin 1 is connected to the radio O4 to which it sends the “MUTE” signal when the telephone is in use.

A supply is also sent from the radio to the amplifier at the base of the aerial, through connector G398.

Parts & tools for this job For 1994 Alfa Romeo 145/146

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