Workshop Manuals Factory service & repair Fiat
01 00 Introduction and technical data02 10 Engine03 18 Clutch04 21 Gearbox and differential05 33 Braking system06 41 Steering07 44 Suspension and wheels08 50 Auxiliary units09 55 Electrical system10 70 Bodywork
Fiat Punto (176) Factory Service Manual (1993-1999)02 · 10 Engine
02 · Engine

Actuators

Make
Fiat
Model
Punto (176) Factory Service Manual
Year
1993–1999
Section
Fuel system (1242 MPI) › Actuators
10 EngineActuators

Emergency system (Recovery)

Automatic diagnosis aims to detect faults in the following components:

Actuators

  • Injectors
  • Step motor
  • Coils (ignition coil)
  • Vapour recirculation solenoid
  • IAW system failure warning light.
  • Fuel consumption gauge (where fitted)

SENSORS

  • Rpm and TDC sensor.
  • Absolute pressure sensor
  • Coolant temperature sensor
  • Intake air temperature sensor
  • Throttle position sensor
  • Lambda probe

When a fault is detected, a warning light lights up on the dashboard and, in the case of certain faults, the number of engine revs falls.

In the case of sensor failure, the system implements signal reconstruction strategies (recovery) in order to ensure engine and catalytic converter operation at an acceptable level without affecting function.

Under these conditions, the vehicle may be driven to a service centre for repairs.

The warning light goes out when the fault is removed.

The system temporarily memorises faults within the control unit in order to facilitate service operations.

Diagnosing with the FIAT/LANCIA TESTER

Socket (6) for bi-directional diagnosis on the connector of electronic control unit (5) is used for connection of the F.L.T.

The TESTER must be connected to the ECU as follows:

Diagram showing the connection of the Fiat-Lancia Tester (9) to the electronic control unit (5) via socket (6), powered by cigar-lighter socket (7), with tester screen (8) displaying diagnostic menus.
  1. Connect the Fiat-Lancia Tester to adaptor «ADAPTER ADT 101 A»
  2. Supply TESTER via cigar-lighter socket (7), or by connecting directly to the battery (a special alternative lead is provided for this purpose).
  3. Connect the TESTER socket to the ECU socket (socket always located in engine bay).

The instrument is able to supply the following information:

  • Engine parameter display
  • Error display
  • Active diagnosis

Parts & tools for this job For 1993 Fiat Punto

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.