Fiat GRANDE PUNTO 1.4 16v – HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

WIRING DIAGRAM - HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING - Fiat GRANDE PUNTO 1.4 16v

DEMISTING REARSCREEN AND REAR VIEW MIRRORS - WIRING DIAGRAM Fiat GRANDE PUNTO 1.4 16v

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COMPONENTS - HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING - Fiat GRANDE PUNTO 1.4 16v

Component code	Description	Reference to the operation
B001	JUNCTION UNIT
B099	MAXI FUSE BOX ON BATTERY
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
C016	AIR CONDITIONING UNIT EARTH	-
C030	LEFT REAR EARTH	-
D021	DASHBOARD/AIR CONDITIONING-HEATER COUPLING	-
D030	DRIVER'S FRONT DOOR COUPLING	-
D031	PASSENGER FRONT DOOR COUPLING	-
H001	IGNITION SWITCH
H80	AIR CONDITIONING CONTROLS
M001	BODY COMPUTER
M070	CLIMATE CONTROL SYSTEM CONTROL UNIT
P055	HEATED REARSCREEN
P060	DRIVER'S DOOR MIRROR
P061	RIGHT EXTERNAL REAR VIEW MIRROR

COMPONENT LOCATION - HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING - Fiat GRANDE PUNTO 1.4 16v

DEMISTING REARSCREEN AND REAR VIEW MIRRORS - COMPONENT LOCATION Fiat GRANDE PUNTO 1.4 16v

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Component code	Description	Reference to the operation
B001	JUNCTION UNIT
B099	MAXI FUSE BOX ON BATTERY
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
C016	AIR CONDITIONING UNIT EARTH	-
C030	LEFT REAR EARTH	-
D021	DASHBOARD/AIR CONDITIONING-HEATER COUPLING	-
D030	DRIVER'S FRONT DOOR COUPLING	-
D031	PASSENGER FRONT DOOR COUPLING	-
H001	IGNITION SWITCH
H80	AIR CONDITIONING CONTROLS
M001	BODY COMPUTER
M070	CLIMATE CONTROL SYSTEM CONTROL UNIT
P055	HEATED REARSCREEN
P060	DRIVER'S DOOR MIRROR
P061	RIGHT EXTERNAL REAR VIEW MIRROR

DESCRIPTION - HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING - Fiat GRANDE PUNTO 1.4 16v

In the case of poor visibility it is possible to activate the demisting of the rearscreen and the exterior rear view mirrors.The heating resistances for these components absorb a considerable amount of energy and are therefore controlled and, possibly, deactivated after they have been working for a certain length of time: the demisting is subject to a delay timer, managed by the Body Computer, according to the following logic:- ignition-operated, starting excluded (INT/A);- engagement signal coming from the special button in the climate control system control panel.Under these circumstances the resistances remain supplied for a maximum of 20 minutes, then the supply is cut off.The supply is cut off in the following conditions:- Key-off- disengagement signal from the button;- battery voltage below 11.5 V;- after the first 10 minutes of operation if the engine speed is below 960 rpm.With the defrosting on the warning light in the climate control system controls also comes on.The activation timer (20 minutes) is set again each time the button is operated.In specifications with an AUTOMATIC AIR CONDITIONER, the climate control system control unit logic also intervenes with the "MAX-DEF" command in accordance with the logic described previously.The "MAX-DEF" function lasts for 3 minutes starting from when the engine temperature exceeds a certain limit.767the deactivation of the MAX-DEF control only causes the switching off of the heated rear windscreen if the command to switch it on came from the MAX-DEF button; if, on the other hand, the command was given via the heated rear windscreen button, it remains on)The rear window demister circuit is controlled by the heated rear window relay and protected by a special fuse in the engine compartment control unit. The door mirror demister circuit is protected by another fuse in the engine compartment control unit. Both circuits are controlled by the logic described above directly by the Body Computer.n specifications with an AUTOMATIC AIR CONDITIONER - the control signal is received from the climate control unit via the CAN but is received directly from the climate controls by the Body Computer in specifications with a MANUAL CLIMATE CONTROL SYSTEM.

FUNCTIONAL DESCRIPTION - HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING - Fiat GRANDE PUNTO 1.4 16v

The heated rear windscreen relay T32, located in the engine compartment junction unit B1, controls the engagement of the heated rear windscreen P55 defrosting resistances via the line protected by fuse F69 of junction unit B1.The coil of relay T32 is supplied via an ignition-controlled supply from relay T5 of B1: the supply, ignition-controlled except during start-up (INT/A) is controlled by pin 13 of connector A of M1. Relay T32 is excited by an earth signal from Body Computer M1 - pin 46 of connector A. This signal is sent on the basis of the strategy described previously and in the presence of a heated rear window control from pin 10 of the switch in unit H80 to pin 20 of connector A of M1 in specifications with MANUAL CLIMATE CONTROL or via the CAN network from the control unit of climate control system M70 at pins 39 and 54 of connector A of M1 - in specifications with an AUTOMATIC AIR CONDITIONER.when the demister is on, Body Computer M1 - pin 12 of connector M1 - sends a positive signal to turn on the led located near the pushbutton in the climate control unit.Activation of door mirror demister coils P60 and P61 is similarly controlled via heated rear window relay T32 and a line protected by fuse F70 of control unit B1.