Engine Rpm Sensor And Flywheel - Fiat Bravo Service Manual

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Table of Contents

Wiring diagram key

1. Heater plugs warning light

2. Rev counter signal

3. Climate control relay

4. Climate control on button

5. Fiat/Lancia Tester diagnostic socket

6. Instrument injector

7. Rpm and TDC sensor

8. Coolant temperature sensor

9. Fuel introduction lever position sensor

10. Intake air temperature sensor

Engine rpm sensor and flywheel

The engine rpm sensor is fitted on the crankcase and is facing a flywheel, located inside the crankcase

and fixed to the crankshaft.

The flywheel has 2 reference dowels at 180° from one another, on the outer part of the circumference.

When these dowels or teeth pass under the sensor, as a result of the variation of the gap, this causes a

variation in the magnetic flow w h i c h produces a current in the coil windings in the sensor.

This signal, sent to the control unit, allows the engine speed to be detected.

1 1 . Injection system failure warning light

12. Flow meter

13. Pre-heating control unit

14. System relay feed

15. Fuel vapour solenoid valve

17. Ignition switch

18. Fast idle valve

19. Advance adjustment device solenoid