Injection-ignition system wiring
- Make
- Fiat
- Model
- Bravo /Brava (182) Factory Service Manual
- Year
- 1995–2001
- Section
- Fuel system (1581 16v) › Injection-ignition system wiring
The injection-ignition system consists mainly of wiring, an electronic control unit (ECU) and the following sensors and actuators:
| Sensors | Actuators |
|---|---|
| -Rpm and TDC sensor | -Engine idle speed actuator |
| -Timing sensor | -Electric fuel pump |
| -Throttle position sensor | -Fuel vapour cut-off valve |
| -Coolant temperature sensor | -Injectors |
| -Intake air temperature sensor | -Ignition coils |
| -Absolute pressure sensor | -Dual relay |
| -Vehicle speed sensor | |
| -Lambda probe |
INJECTION-IGNITION SYSTEM WIRING
The various system components are connected by a single wiring system fitted with connectors of various types. These are grouped in special ducts fitted to the engine (prewiring).
INJECTION-IGNITION ECU
The I.A.W. -1AF.13 (I.A.W. -1AF.23 for vehicles with automatic transmission) injection-ignition system ECU adopted is specific to this version.
It consists of hybrid thick film circuits connected to the electrical system by a 55 pin multiple connector.
The ECU's task is to process signals from the various sensors through the application of software algorithms and control the actuators in order to achieve optimal engine performance.
Essential features of the electronic control unit are as follows:
a. Data acquisition and coding section
This consists of a set of electronic components designed to receive data in the form of analogue electrical signals. Inside, the signals are converted into digital signals, processed and stored.
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