Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 145/146 Electrical System Diagnosis Manual, Volume 3 (1994-2001)02 · 146 electrical system diagnosis
02 · Diagnostics

Faultfinding table

Make
Alfa Romeo
Model
145/146 Electrical System Diagnosis Manual, Volume 3
Year
1994–2001
Section
Car Radio › Faultfinding table
146 electrical system diagnosisFaultfinding table · page 1 of 2

FAULTFINDING TABLE

Failure Component to be checked
F2 F15 O4 O5a-O31a O5b-O31b O5c O5d G65 H3
Radio power failure (1)●●●●
Poor reception●●
RH front tweeter/speaker not working●●
LH front speaker/tweeter not working●●
RH rear speaker not working●●
LH rear speaker not working●●
Disturbance from other electric services (2)●

(1) PHILIPS DC731 car radio, also check that the extra fuse (10A) on the rear of the radio is intact; change it if necessary.

(2) If there is a hissing noise or other signs of malfunctioning of the speakers when the stop lights are operated, check that the wiring is correctly connected and that the anti-disturbance condenser in switch H3 is working properly (see the "Stop lights" section).

CHECKING COMPONENTS

Car radio O4

PHILIPS DC710/255 CAR RADIO: If any specific functions or devices of the radio itself are not working, consult the "Instructions Handbook" provided with it.

view of connectors side of car radio
  1. connection socket for aerial coaxial cable G65
  2. connector not connected
  3. connector not connected
  4. connector O4 A
  5. extra fuse (10A)
  6. connector O4 B

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

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