ENGINE 1.3 QUADRAJET (75PS) 90 3A.1.8.3 SENSORS AND CONTROL UNIT DESCRIPTIONCOMPONENTS B. Rpm sensor Specifications : This is fitted on the crankcase and faces the phonic wheel on the flywheel.It is inductive type, i.e. its operation is determined by magnetic field changes generated by the teeth passing in front of the phonic wheel (60-2 teeth). The injection control unit uses the rpm signal for : - determining the engine speed of rotation - determining the angular crankshaft position Fig. 176
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