Electrical/electronic circuit

ELECTRICAL/ELECTRONIC CIRCUIT

The system is made up of the following components:

A - An electronic control unit with the function of managing the fuel system, the moment of ignition, the idle speed, the recovery, the autodiagnostics and also allowing dialogue with the F/L Tester.

B - A series of sensors which inform the control unit of the engine operating conditions:

1. Rpm and TDC sensor fitted on the crankshaft front cover facing the 60-2 teeth of the flywheel integrated with the crankshaft pulley.
2. Coolant temperature sensor fitted on the thermostat casing.
3. Intake air temperature sensor (N.T.C.) fitted on the injector holder turret.
4. Accelerator butterfly position sensor fitted on the butterfly casing.
5. Lambda sensor fitted on the exhaust manifold upstream of the catalytic silencer.
6. Micro-switch for recognizing the butterfly valve closed position (during idling) incorporated in the engine idle speed motor.

C - A series of actuators which allow the control unit to manage the operation of the engine:

7. Injector fitted on the butterfly casing.
8. Direct current motor for controlling the idle speed.
9. Electric fuel pump.
10. Ignition coil with four outlets.
11. Charcoal filter solenoid valve.

D - Devices signalling problems, checks and diagnosis:

12. Warning light, signalling system failure, in instrument panel.
13. Diagnostic socket for F/L Tester.