Workshop Manuals Factory service & repair Alfa Romeo
01 145 electrical system diagnosis02 146 electrical system diagnosis03 ABS, Alfa Romeo Code and engine management
Alfa Romeo 145/146 Electrical System Diagnosis Manual, Volume 3 (1994-2001)02 · 146 electrical system diagnosis
02 · Diagnostics

General description

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

GENERAL DESCRIPTION

The following diagrams show the different earths present on the vehicle and the connecting cables for each of them; each cable shows the circuit to which it refers and the component earthed through that line.

The earths shown are the following:

  • G53a Right-hand engine compartment earth
  • G53b Left-hand engine compartment earth
  • G55a Right-hand side panel earth
  • G55b Left-hand side panel earth
  • G60 Injection wiring earth (G60a/b)
  • G63a Right-hand rear earth
  • G63b Left-hand rear earth
  • G106 Seat cross rail earth
  • G109 Injection wiring earth
  • G143 Centre services tray earth
  • G148b Earth under left-hand dashboard
  • G267 Earth on crankcase
  • G318 Earth on gearbox
  • G381 Airbag earth

NOTE: Using these diagrams it is easy to locate those circuits which are connected to earth by the same line: this simplifies faultfinding work in the event of problems affecting more than one system: for instance the oxidation of an earth can put several circuits and numerous functions out of order contemporaneously.

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

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