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Wiring Diagram - STARTING AND RECHARING - Fiat DUCATO 2.0 16V da 03/05
Components - STARTING AND RECHARING - Fiat DUCATO 2.0 16V da 03/05
| Component code | Description | Reference to the assembly |
| A001 | BATTERY | - |
| A010 | ALTERNATOR | |
| A020 | STARTER MOTOR | |
| B001 | JUNCTION UNIT | |
| B002 | JUNCTION UNIT UNDER DASHBOARD | - |
| B099 | MAXI FUSE BOX ON BATTERY | - |
| C003 | BATTERY EARTH ON BODYSHELL | - |
| D001 | FRONT/DASHBOARD COUPLING | - |
| D007 | ALTERNATOR COUPLING | - |
| D097 | SHORT CIRCUITING COUPLING | - |
| E050 | INSTRUMENT PANEL | |
| H001 | IGNITION SWITCH | |
| - |
Location Components - STARTING AND RECHARING - Fiat DUCATO 2.0 16V da 03/05
Description - STARTING AND RECHARING - Fiat DUCATO 2.0 16V da 03/05
The ignition and recharging circuit comprises the battery, starter motor and alternator.The battery (12) is low maintenance type.The starter motor consists of a d.c. motor supplied by the battery and an excitation electromagnet.When the ignition key is turned as far as it will go (AVV), the motor windings are supplied to generate the electromagnetic forces that are used to turn the starter motor pinion. This simultaneously activates the electromagnet that operates the mechanism that causes the pinion to mesh with the flywheel ring gear and thus turn the crankshaft.The alternator recharges the battery during normal engine rotation.The alternator shaft (rotor) is turned by the crankshaft via a belt. When supplied by an excitation current, the rotor generates a magnetic field that sets up an alternating current in the fixed winding (stator).A rectifying diode bridge on the back of the alternator allows the alternating current to be rectified to a direct current that is sent to recharge the battery.A voltage governor, also built into the alternator, maintains the power supply at a constant voltage (14 V) throughout the load variation and engine speed ranges.
Operational Description - STARTING AND RECHARING - Fiat DUCATO 2.0 16V da 03/05
Line (50) direct from the battery leaves ignition switch H001 from pin 3 of connector A. With the ignition key turned as far as it will go (AVV), the winding of starter motor electromagnet A020 is activated.The starter motor is also supplied with voltage taken directly from battery A001.Direct current generated by alternator A010 (pin B+) is sent to recharge battery A001. When the alternator is not generating voltage and thus not recharging the battery, it sends an earth signal from pin D+ of instrument panel E050 - pin 3 connector A - to control activation of the low battery recharging warning light.When the engine is started, this signal is equal to 12 V and the warning light goes off.The entire system is protected by fuses F70 and F72 housed in battery control unit B099 and fuses F03 and F16 housed in engine bay control unit B001.
