AUTOMOTIVE ELECTRICIANS

Alfa Romeo GT 1.9 JTD 16V – DIRECTION INDICATORS / HAZARD WARNING LIGHTS – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Alfa Romeo GT 1.9 JTD 16V   – DIRECTION INDICATORS / HAZARD WARNING LIGHTS –  – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring diagram - DIRECTION INDICATORS / HAZARD WARNING LIGHTS - Alfa Romeo GT 1.9 JTD 16V





Components - DIRECTION INDICATORS / HAZARD WARNING LIGHTS - Alfa Romeo GT 1.9 JTD 16V



Component codeNameAssembly reference
B1JUNCTION UNIT-
B2JUNCTION UNIT UNDER DASHBOARD
B5MAXI FUSE-1 BOX-
B99MAXIFUSE BOX ON BATTERY
C10FRONT LEFT EARTH ( FRONT )-
C11RIGHT FRONT EARTH ( FRONT )-
C15FACIA EARTH, DRIVER''S SIDE-
C30LEFT REAR EARTH ( REAR )-
C38EARTH ON TUNNEL-
D51DIRECTION INDICATORS FRONT COUPLNIG ( CONNECTORS )-
E50INSTRUMENT PANEL
F18LEFT FRONT DIRECTION INDICATOR ( CONNECTORS )
F19RIGHT FRONT DIRECTION INDICATOR
F20LEFT SIDE REPEATER
F21RIGHT SIDE REPEATER ( FRONT )
F30REAR LIGHTS CLUSTER LEFT (FIXED PART)
F31RIGHT. REAR LIGHT CLUSTER (FIXED PART)
H1IGNITION SWITCH
H5STEERING COLUMN SWITCH UNIT
H12HAZARD WARNING LIGHTS, FOG LIGHTS, REAR FOG LAMPS CONTROL
M1BODY COMPUTER

Location of components - DIRECTION INDICATORS / HAZARD WARNING LIGHTS - Alfa Romeo GT 1.9 JTD 16V





Components - DIRECTION INDICATORS / HAZARD WARNING LIGHTS - Alfa Romeo GT 1.9 JTD 16V



Component codeNameAssembly reference
B1JUNCTION UNIT-
B2JUNCTION UNIT UNDER DASHBOARD
B5MAXI FUSE-1 BOX-
B99MAXIFUSE BOX ON BATTERY
C10FRONT LEFT EARTH ( FRONT )-
C11RIGHT FRONT EARTH ( FRONT )-
C15FACIA EARTH, DRIVER''S SIDE-
C30LEFT REAR EARTH ( REAR )-
C38EARTH ON TUNNEL-
D51DIRECTION INDICATORS FRONT COUPLNIG ( CONNECTORS )-
E50INSTRUMENT PANEL
F18LEFT FRONT DIRECTION INDICATOR ( CONNECTORS )
F19RIGHT FRONT DIRECTION INDICATOR
F20LEFT SIDE REPEATER
F21RIGHT SIDE REPEATER ( FRONT )
F30REAR LIGHTS CLUSTER LEFT (FIXED PART)
F31RIGHT. REAR LIGHT CLUSTER (FIXED PART)
H1IGNITION SWITCH
H5STEERING COLUMN SWITCH UNIT
H12HAZARD WARNING LIGHTS, FOG LIGHTS, REAR FOG LAMPS CONTROL
M1BODY COMPUTER

Description - DIRECTION INDICATORS / HAZARD WARNING LIGHTS - Alfa Romeo GT 1.9 JTD 16V


The left and right direction indicators are operated by raising or lowering the left lever on the stalk unit. the function is activated with the ignition key in the ON position.The hazard warning lights (right and left direction indicators operated simultaneously) are turned on by the pressing a button in the centre of the dashboard and both the direction indicators come on at the same time. An LED in the back of the button also comes on flashing in synchronization with the outside lights; the function is always activated.The switching on of the direction indicators / hazard warning lights is managed by the Body Computer which also controls the flashing frequency which is sent to the other connectors via the CAN serial network.In this way, the two direction indicator warning lights in the instrument panel are also lit up; in addition, as well as the flashing of the warning lights, the system also produces a low frequency auditory signal., via a relay in the Body Computer.The correct operation of the lights is controlled by the direction indicators ''check'' function: the following is controlled for each of the two circuits (right branch and left side):open circuit or 21 W bulb missing (right front, right rear, left front, left rear)short circuit to earth (bulb short circuit or wiring short circuit to earth)short circuit to Vbatt (wiring short circuit to Vbatt)5W bulb replaced with a 21 W bulbIf one of the situations described above is detected, the Body Computer notifies the CAN of the failure state: a special ''lights failure'' warning light comes on in the instrument panel and, at the same time, the information is shown on the display. There is also a signal that one of the front or rear 21 W bulbs is missing with an increase in the nominal flashing frequency of the warning lights in the instrument panel and the auditory feedback (buzzer).The direction indicators come on to notify the user that the command to close/open the doors has been received from the remote control.

Functional description - DIRECTION INDICATORS / HAZARD WARNING LIGHTS - Alfa Romeo GT 1.9 JTD 16V


The direction indicators activation signals are sent to pin 7 of connector D and 30 of connector B for the Body ComputerM1 from the steering column switch unitH5.The ''ignition ON'' signal (INT) for the switch H1 reaches the underdashboard control unitB2at pin 11 of connector H and from there moves on to the Body ComputerM1(pin 9 of connector F).The hazard warning lights activation signal, on the other hand, reaches pin 34 of connector B ofM1from the control button in the centre panelH12.The Body ComputerM1 controls the supply for the side lights at the side F20 (left) and F21 (rght) from pins 2 and 22 of connector A, for the front side lights F18 (left) F19 (right) from pins 38 and 39 of connector A and for the rear side lights F30 (left) F31 B (right) from pins 12 and 3 of connector E.The Body ComputerM1 is connected, via the CAN line, to the instrument panel E50, to manage the ''direction indicators'' warning light, the buzzer and, if there are failures in the circuit, the ''lights failure'' warning light.The signal is sent, from pin 29 of connector B of M1, to light up the LED in the control buttonH12.

Engine compartment junction unit



B1A



B1A



B1A



B1B



B1B



B1B



B1C



B1C



B1C



B1D



B1E



B1E



B1X



B1X



Junction unit under dashboard



B2A



B2A



B2A



B2A



B2A



B2A



B2B



B2B



B2C



B2C



B2D



B2E



B2F



B2G



B2H



MAXI FUSE box



B5A



B5B



B5C



B5D



B5E



B5F



Maxifuse box on battery



B99A



B99A



B99B



B99D



Front left earth



C10



C10



C10



Right front earth



C11



C11



C11



Facia earth, driver's side



C15A



C15B



C15C



Left rear earth



C30



Earth on centre tunnel



C38



Direction indicators front couplnig



D51



D51



Instrument panel



E50A



E50B



Left front direction indicator



F18



F18



Right front direction indicator



F19



F19



Left side repeater



F20



Right side repeater



F21



Rear left light cluster



F30A



F30B



Rear right light cluster



F31A



F31B



Ignition switch



H1A



H1A



H1B



Steering column switch unit



H5A



H5B



H5C



Hazard warning lights fog lights rear fog lamps control



H12A



H12B



Body computer



M1A



M1A



M1A



M1A



M1A



M1A



M1B



M1C



M1D



M1E



M1F



M1G


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