Alfa Romeo GT 2.0 JTS – AIRBAG – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring diagram - AIRBAG - Alfa Romeo GT 2.0 JTS

AIRBAG - WIRING DIAGRAM Alfa Romeo GT 2.0 JTS

Components - AIRBAG - Alfa Romeo GT 2.0 JTS

Component code	Name	Assembly reference
B1	JUNCTION UNIT	-
B2	JUNCTION UNIT UNDER DASHBOARD
B5	MAXI FUSE-1 BOX	-
B99	MAXIFUSE BOX ON BATTERY
C15	FACIA EARTH, DRIVER''S SIDE	-
C50	AIR BAG EARTH	-
D47	CLOCK SPRING ON STEERING WHEEL
E50	INSTRUMENT PANEL
H1	IGNITION SWITCH
H75	PASSENGER''S AIR BAG DISABLEMENT SWITCH ( FACIA )
K66	SENSOR FOR DRIVER''S SIDE BAG ( REAR )
K67	SENSOR FOR PASSENGER SIDE BAG ( REAR )
M1	BODY COMPUTER
M60	AIR BAG CONTROL UNIT
Q9	DRIVER''S AIR BAG
Q11	AIR BAG IN DASHBOARD (PASSENGER SIDE) ( FACIA )
Q20	DRIVER''S SEAT BELT PRE-TENSIONER
Q21	FRONT PASSENGER SEAT BELT PRE-TENSIONER
Q30	DRIVER''S SIDE BAG ( REAR )
Q31	PASSENGER SIDE BAG ( REAR )
Q40	DRIVER''S HEAD BAG ( REAR )
Q41	PASSENGER HEAD BAG ( REAR )

Location of components - AIRBAG - Alfa Romeo GT 2.0 JTS

AIRBAG - LOCATION OF COMPONENTS Alfa Romeo GT 2.0 JTS

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Components - AIRBAG - Alfa Romeo GT 2.0 JTS

Component code	Name	Assembly reference
B1	JUNCTION UNIT	-
B2	JUNCTION UNIT UNDER DASHBOARD
B5	MAXI FUSE-1 BOX	-
B99	MAXIFUSE BOX ON BATTERY
C15	FACIA EARTH, DRIVER''S SIDE	-
C50	AIR BAG EARTH	-
D47	CLOCK SPRING ON STEERING WHEEL
E50	INSTRUMENT PANEL
H1	IGNITION SWITCH
H75	PASSENGER''S AIR BAG DISABLEMENT SWITCH ( FACIA )
K66	SENSOR FOR DRIVER''S SIDE BAG ( REAR )
K67	SENSOR FOR PASSENGER SIDE BAG ( REAR )
M1	BODY COMPUTER
M60	AIR BAG CONTROL UNIT
Q9	DRIVER''S AIR BAG
Q11	AIR BAG IN DASHBOARD (PASSENGER SIDE) ( FACIA )
Q20	DRIVER''S SEAT BELT PRE-TENSIONER
Q21	FRONT PASSENGER SEAT BELT PRE-TENSIONER
Q30	DRIVER''S SIDE BAG ( REAR )
Q31	PASSENGER SIDE BAG ( REAR )
Q40	DRIVER''S HEAD BAG ( REAR )
Q41	PASSENGER HEAD BAG ( REAR )

Description - AIRBAG - Alfa Romeo GT 2.0 JTS

The car may be fitted with an electronically-controlled safety system that sets off the front seat belt pretensioners and the driver''s Air Bag, passenger Air Bag and Side Bags in the case of frontal and/or side impact of a certain severity.In the case of a side impact of a certain magnitude, the Side Bag and the corresponding Head Bag are activated (only on the side where the impact took place).An electronic control unit manages the entire system by controlling all the components and activating the restraint systems (pretensioners and airbags) as necessary.The control unit is located under the centre console and is rigidly fixed to the bodyshell: in this way the deceleration sensors located inside it are close to the centre of gravity and detect deceleration for the entire vehicle accurately.There is an accelerometric sensor on the two front door pillars which, in the case of a side impact, transmits a signal to the control unit. This signal is also processed inside the control unit which, as a result, decides on the operation of the Side Bag and the Head Bag on the side where the impact has taken place.The driver''s Air Bag module is located at the centre of the steering wheel; it is fitted on a tilting plate which enables the horn to be operated. The plate houses a metal container which holds the folded air bag and a gas generator that inflates the bag.A clock spring device allows the air bag module connection leads to turn with the steering wheel without the risk of breakage.The passenger airbag is located on the facia, above the glove compartment, and is fastened directly to the car crossmember via a special bracket.The passenger Air Bag can be manually deactivated via a special switch - which can be operated by a key - located at the end of the dashboard, passenger side and is only accessible with the door open. With the key in the OFF position, the control unit also controls the operation of the special ''passenger Air Bag disabled'' warning light.The Side Bag is housed in the outer part of the front seat. The sensor is located in the centre pillar.The Head Bag consists of a curtain bag which inflates and places itself between the head of the occupants and the side windows. The Head Bag folded bag is located under the roof panel, whilst the rear pillar houses the gas generator. The Head Bag represents further protection for the occupants of the front seats because, in addition to the chest area which is already protected by the Side Bags, it also protects the head.It also offers the first protection for the occupants of the rear seats.The pretensioner is a device built into the front seat belt reel.For more details.The control unit is self-diagnostic:it detects and memorizes any faultsit recognizes the various components and the type of faultit signals the onset of these faults via the special warning lightSystem activations following a particularly serious impact are memorized by the control unit.The system control unit supply line is protected by a fuse located in the junction unit.768- carefully observe the safety regulations when working on the airbag system.For more details [PR5580C]

Functional description - AIRBAG - Alfa Romeo GT 2.0 JTS

The Air Bag system control unitM60 receives a supply controlled by the ignition (INT) at pin 12 of connector A from the line protected by fuse F50 of the additional fuse box B2. Pin 1 of connector A and pins 17 and 22 of connector B are connected to a specific earthC50. A signal from passenger Air Bag disabling switchH75 reaches pin 11 of connector A of M60; pin 10 of connector A ofM60 provides the reference earth. The side impact detection sensorsK66 (driver''s side) and K67 (passenger side) send signals to pins 24, 26, 25 and 27, respectively of connector B of the control unit M60. When frontal impact of a certain severity (depending on the software setting) is detected, the control unit sends control signals to set off the modules:to driver''s Air Bag Q9, via the steering wheel clockspring D47 (from pins 24 and 23 of connector A of M60):to passenger side air bag Q11 (from pins 21 and 22 of connector A of M60):to the driver''s pretensioner Q20 (from pins 2 and 1 of connector B of M60) and the passenger pretensioner Q21 (from pins 4 and 3 of connector B of M60);The seat structure that houses the two side bags is connected to earthC50. When the system self-diagnostic function detects a fault or an impact is detected, control unitM60 sends a signal -from pin 8 of connector A - to the Air Bag faulty warning light located in the instrument panel E50. ; pin 7 of connector A ofM60 sends the signal for the ''passenger disabling'' warning light. Self-diagnostic data can be read by connecting the unit to connector G of Body ComputerM1- pin 3: this receives signals from pin 6 of connector A of control unit M60 through the relevant tester line. When side impact of a certain severity (dependent on the software setting) is detected, the control unit sends control signals to set off the modules:to driver''s Side Bag Q30 (from pins 6 and 5 of connector B of M60);to passenger Side Bag Q31 (from pins 9 and 10 of connector B of M60);to the driver''s Head Bag Q40 (from pins 8 and 7 of connector B of M60);to the passenger Head Bag Q41 (from pins 11 and 12 of connector B of M60).