Fiat MULTIPLA 1.9 JTD 8V da 06/04 – STARTING AND RECHARING – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring diagram

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Components

Component code

Name

Assembly reference

Battery

Alternator

Alternator

Starter motor

Starter motor

Junction unit

MAXI FUSE box

Front/facia junction

Front/engine junction

E50

Instrument panel

Ignition switch

2891892Op. 5520A ignition switch

Location of components

Get access to all wiring diagrams of the car

Components

Component code

Name

Assembly reference

Battery

Alternator

Alternator

Starter motor

Starter motor

Junction unit

MAXI FUSE box

Front/facia junction

Front/engine junction

E50

Instrument panel

Ignition switch

2891892Op. 5520A ignition switch

DescriptionThe ignition and recharging circuit comprises a battery, starter motor and alternator.The battery (12V) is the low maintenance type.The starter motor consists of a direct current motor supplied by the battery and an excitation solenoid.When the ignition key is turned to the extreme position (AVV), the starter motor windings are supplied, producing electro-magnetic forces which rotate the motor pinion. At the same time, the solenoid is energized and operates the engagement mechanism for the flywheel ring gear pinion turning over the engine.The alternator recharges the battery during normal engine rotation.The alternator shaft (rotor) is turned by the crankshaft by means of a belt. When supplied with an excitation current, the rotor sets up a magnetic field that induces an alternating current in the fixed coil (stator).A diode rectifying bridge located on the back of the alternator transforms the alternating current into a direct current, which is sent to recharge the battery.A voltage regulator, also built into the alternator, maintains a constant voltage supply (about 14V) throughout the load and engine speed ranges.

Functional description When the ignition key for the switch H1 is turned to the extreme position (AVV) the solenoid winding (pin 50) of the starter motor A20 is supplied. This supply comes from the battery via the line of maxifuse IGN of B5 . Pin 30 of A20 , the actual starter motor, receives the voltage coming directly from the battery A1 . The direct current generated by the alternator A10 (pin B+) is sent to recharge the battery A1 , passing through motor A20 . When the alternator is not turning, i.e. not recharging the battery, an earth signal is sent from pin D+ to instrument panel E50 - pin 1 of connector C. The instrument E50 is supplied with the ignition switched on (INT) at pin 2 of connector A from the line protected by fuse F1 of the junction unit B1 : when this signal arrives, the 'recharging' warning light comes on. When the engine has been started up, this signal becomes 12 V and the warning light therefore goes out.