WIRING DIAGRAM - DEFROSTING REARSCREEN AND REAR VIEW MIRRORS - Fiat 500 1.2 8v
COMPONENTS - DEFROSTING REARSCREEN AND REAR VIEW MIRRORS - Fiat 500 1.2 8v
| Component code | Description | Reference to the operation |
| A001 | BATTERY | |
| B001 | JUNCTION UNIT | |
| B016 | MIRROR DEMIST FUSE | - |
| C010 | LEFT FRONT EARTH | - |
| C015 | DASHBOARD EARTH, DRIVER'S SIDE | - |
| C032 | REARSCREEN EARTH | - |
| D006 | FRONT/REAR COUPLING | - |
| D008 | AIR CONDITIONING-HEATER FRONT COUPLING | - |
| D030 | DRIVER'S FRONT DOOR COUPLING | - |
| D031 | PASSENGER FRONT DOOR COUPLING | - |
| D259 | INSTRUMENT PANEL BRIDGE COUPLING | - |
| H001 | IGNITION SWITCH | |
| H115 | ADDITIONAL CONTROL PANEL | |
| M001 | BODY COMPUTER | |
| M070 | CLIMATE CONTROL SYSTEM CONTROL UNIT | - |
| P055 | HEATED REARSCREEN | |
| P060 | DRIVER'S DOOR MIRROR | |
| P061 | PASSENGER DOOR MIRROR |
COMPONENT LOCATION - DEFROSTING REARSCREEN AND REAR VIEW MIRRORS - Fiat 500 1.2 8v
| Component code | Description | Reference to the operation |
| A001 | BATTERY | |
| B001 | JUNCTION UNIT | |
| B016 | MIRROR DEMIST FUSE | - |
| C010 | LEFT FRONT EARTH | - |
| C015 | DASHBOARD EARTH, DRIVER'S SIDE | - |
| C032 | REARSCREEN EARTH | - |
| D006 | FRONT/REAR COUPLING | - |
| D008 | AIR CONDITIONING-HEATER FRONT COUPLING | - |
| D030 | DRIVER'S FRONT DOOR COUPLING | - |
| D031 | PASSENGER FRONT DOOR COUPLING | - |
| D259 | INSTRUMENT PANEL BRIDGE COUPLING | - |
| H001 | IGNITION SWITCH | |
| H115 | ADDITIONAL CONTROL PANEL | |
| M001 | BODY COMPUTER | |
| M070 | CLIMATE CONTROL SYSTEM CONTROL UNIT | - |
| P055 | HEATED REARSCREEN | |
| P060 | DRIVER'S DOOR MIRROR | |
| P061 | PASSENGER DOOR MIRROR |
DESCRIPTION - DEFROSTING REARSCREEN AND REAR VIEW MIRRORS - Fiat 500 1.2 8v
In the case of poor visibility it is possible to activate the demisting of the rear screen and the door mirrors (if present).The heating resistances for these components absorb a considerable amount of energy and are therefore controlled and deactivated after a certain period of operation; the defrosting is timed according to a logic managed by the Body Computer:
FUNCTIONAL DESCRIPTION - DEFROSTING REARSCREEN AND REAR VIEW MIRRORS - Fiat 500 1.2 8v
The relay T19, located in the engine compartment junction unit B001, manages the switching on of the defrosting resistances for the heated rear windscreen P055 (connector A) and the driver''s side P060 and passenger side P061 exterior rear view mirrors, from pin 70 of connector B, via the line protected by fuse F20 of B001.The coil for relay T19 receives an ignition-controlled power supply (15/54) along the line protected by fuse F87 of B001; relay T19 is energized by an earth signal (pin 71 of connector B of B001) coming from the Body Computer M001 (pin 46 of connector B). This signal is sent according to the control logic described previously and if the heated rear windscreen engagement control (earth signal) supplied by pin 2 of the switch in the auxiliary control panel H115 is present at pin 3 of connector D of M001. Pin 1 of H115 is connected to the driver''s earth C015.On versions with AUTOMATIC AIR CONDITIONING it is also possible to activate the engagement of the heated rear windscreen (MAX-DEF function) from the climate control system control unit M070 (pins 10 and 9 of connector A) via the signal, sent on the B-CAN, to the Body Computer (pins 57 and 58 of connector B).With the defrosting switched on, the Body Computer M001 (pin 12 of connector D) sends a positive signal to turn on the LED in the heated rear windscreen on button (pin 3 of H115).The Body Computer M001 receives a direct battery power supply (pin 1 of connector A) protected by fuse F01 of the engine compartment junction unit B001 (pin 18 of connector B); it also receives an ignition-controlled supply (INT) at pin 11 of connector E.The Body Computer M001 receives an ignition-controlled power supply (INT/A) at pin 1 of connector E which excludes the heated rear windscreen and rear view mirrors heating system during starting.The Body Computer M001 is also connected to the driver''s dashboard earch C015 via pins 9 and 10 of connector E.The circuit for the defrosting resistances for the driver''s P060 and passenger P061 exterior rear view mirrors is also protected by a dedicated external fuse B016.The resistances for the mirrors defrosting are connected to the left front earth C010, whilst the heated rear windscreen (connector B) is connected to the dedicated earth C032.
