AUTOMOTIVE ELECTRICIANS

Alfa Romeo GT 1.9 JTD 16V – SIDE LIGHTS / NO. PLATE LIGHTS – – Xenon Gas headlamps – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Alfa Romeo GT 1.9 JTD 16V   – SIDE LIGHTS / NO. PLATE LIGHTS –  – Xenon Gas headlamps – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring diagram - SIDE LIGHTS / NO. PLATE LIGHTS - Alfa Romeo GT 1.9 JTD 16V





Components - SIDE LIGHTS / NO. PLATE LIGHTS - Alfa Romeo GT 1.9 JTD 16V



Component codeNameAssembly reference
B1JUNCTION UNIT-
B1JUNCTION UNIT
B2JUNCTION UNIT UNDER DASHBOARD
B5MAXI FUSE-1 BOX-
B99MAXIFUSE BOX ON BATTERY
C10FRONT LEFT EARTH ( FRONT )-
C11RIGHT FRONT EARTH ( FRONT )-
C30LEFT REAR EARTH ( REAR )-
C38EARTH ON TUNNEL-
D212BUMPER REAR COUPLING-
D212Rear bumper coupling-
E50INSTRUMENT PANEL
F10LEFT HEADLAMP ( FRONT )
F11RIGHT HEADLAMP
F30REAR LIGHTS CLUSTER LEFT (FIXED PART)
F31RIGHT. REAR LIGHT CLUSTER (FIXED PART)
F50LEFT NUMBER PLATE LIGHT
F51RIGHT NUMBER PLATE LIGHT
H1IGNITION SWITCH
H5STEERING COLUMN SWITCH UNIT
M1BODY COMPUTER

Location of components - SIDE LIGHTS / NO. PLATE LIGHTS - Alfa Romeo GT 1.9 JTD 16V





Components - SIDE LIGHTS / NO. PLATE LIGHTS - Alfa Romeo GT 1.9 JTD 16V



Component codeNameAssembly reference
B1JUNCTION UNIT-
B1JUNCTION UNIT
B2JUNCTION UNIT UNDER DASHBOARD
B5MAXI FUSE-1 BOX-
B99MAXIFUSE BOX ON BATTERY
C10FRONT LEFT EARTH ( FRONT )-
C11RIGHT FRONT EARTH ( FRONT )-
C30LEFT REAR EARTH ( REAR )-
C38EARTH ON TUNNEL-
D212BUMPER REAR COUPLING-
D212Rear bumper coupling-
E50INSTRUMENT PANEL
F10LEFT HEADLAMP ( FRONT )
F11RIGHT HEADLAMP
F30REAR LIGHTS CLUSTER LEFT (FIXED PART)
F31RIGHT. REAR LIGHT CLUSTER (FIXED PART)
F50LEFT NUMBER PLATE LIGHT
F51RIGHT NUMBER PLATE LIGHT
H1IGNITION SWITCH
H5STEERING COLUMN SWITCH UNIT
M1BODY COMPUTER

Description - SIDE LIGHTS / NO. PLATE LIGHTS - Alfa Romeo GT 1.9 JTD 16V


The side lights are switched on when the ring nut on the steering column switch unit left lever is turned to the first position.The switching on of the side lights is managed by the Body Computer.The function of controlling the side lights is activated by the ignition key in ON position (INT) go ahead signals and the command from the steering column switch unit: the side lights are supplied two at a time, on the left side and the right side.Turning on the side lights also turns on the number plate lights and numerous other interior lights for passenger compartment lighting and instrument & control lighting (these lines are described and illustrated in the diagrams for the components to which they refer).The activation and/or deactivation information is sent via the ACN: in this way the ''Side Lights'' warning light in the instrument panel is also switched on.The instrument panel also activates the serigraphy night lighting.The ''Park'' function for the side lights is switched on when the key is turned to the PARK position:if the direction indicators are not activated, the parking lights come on on both sides of the vehicle, like the no. plate lights and the side lights warning light;if the direction indicator on one side is on, the parking lights only come on on that side, whilst the no. plate lights and the side lights warning light do not come on.The ''Follow me home'' function is designed to keep the dipped headlamps and the side lights on after the engine has been switched off (key in OFF and/or PARK) for a time of 30 seconds or multiples thereof.Keeping the dipped headlamps on is signalled by the side lights warning light in the instrument panel remaining on.The funciton is switched on by operating the flasher lever within 2 minutes: each time the lever is operated the time the lights remain on increases by 30 seconds up to a maximum of 210 secs.Operating the flasher lever for longer than 2 seconds switches the function off; the function is also switched off if the ignition key is turned to the ON position.The correct operation of the lights is controlled by the side lights and no. plate lights ''check'' function: the following is controlled for each of the two circuits (right branch and left branch):open circuit or bulb missingshort 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.

Functional description - SIDE LIGHTS / NO. PLATE LIGHTS - Alfa Romeo GT 1.9 JTD 16V


The side lights activated signal is sent to pin 28 of connector B of the Body ComputerM1from 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 ''key in PARK'' signal (POS) for the switch H1 reaches the underdashboard control unitB2, at pin 2 of connector H and from there goes to the Body ComputerM1(pin 12 of connector F).The Body ComputerM1 controls the supply for the front side lights F10 (left) and F11 (right) from pins 30 and 40 of connector A, the rear side lights F30 (left) F31 (right) and the no. plate lights F50 and F51 from pins 5, 6, 9 and 38 of connector E.The Body ComputerM1 is connected to the instrument panel E50 to manage the''side lights on'' warning light and, if faults are detected in the circuit, the ''lights failure'' warning light.

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



Left rear earth



C30



Earth on centre tunnel



C38



Bumper rear coupling



D212A



D212A



D212A



D212A



D212B



D212B



D212B



D212B



D212C



D212C



Instrument panel



E50A



E50B



Left headlamp



F10



F10



F10



F10



Right headlamp



F11



F11



F11



F11



Rear left light cluster



F30A



F30B



Rear right light cluster



F31A



F31B



Left number plate light



F50



Right number plate light



F51



Ignition switch



H1A



H1A



H1B



Steering column switch unit



H5A



H5B



H5C



Body computer



M1A



M1A



M1A



M1A



M1A



M1A



M1B



M1C



M1D



M1E



M1F



M1G


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