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Alfa Romeo GT 1.9 JTD 16V – DIAGNOSTIC MULTIPLE CONNECTOR – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring diagram - DIAGNOSTIC MULTIPLE CONNECTOR - Alfa Romeo GT 1.9 JTD 16V

DIAGNOSTIC MULTIPLE CONNECTOR - WIRING DIAGRAM Alfa Romeo GT 1.9 JTD 16V

Components - DIAGNOSTIC MULTIPLE CONNECTOR - Alfa Romeo GT 1.9 JTD 16V

Component code	Name	Assembly reference
B1	JUNCTION UNIT	-
B1	JUNCTION UNIT
B2	JUNCTION UNIT UNDER DASHBOARD
B5	MAXI FUSE-1 BOX	-
B99	MAXIFUSE BOX ON BATTERY
C15	FACIA EARTH, DRIVER''S SIDE	-
F10	LEFT HEADLAMP ( FRONT )
F11	RIGHT HEADLAMP
H1	IGNITION SWITCH
M1	BODY COMPUTER
M10	ENGINE MANAGEMENT ECU	1056B
M10	ENGINE MANAGEMENT ECU
M50	ABS CONTROL UNIT ( FRONT )
M54	SELESPEED TRANSMISSION CONTROL UNIT	2127E
M60	AIR BAG CONTROL UNIT

Location of components - DIAGNOSTIC MULTIPLE CONNECTOR - Alfa Romeo GT 1.9 JTD 16V

DIAGNOSTIC MULTIPLE CONNECTOR - LOCATION OF COMPONENTS Alfa Romeo GT 1.9 JTD 16V

Components - DIAGNOSTIC MULTIPLE CONNECTOR - Alfa Romeo GT 1.9 JTD 16V

Component code	Name	Assembly reference
B1	JUNCTION UNIT	-
B1	JUNCTION UNIT
B2	JUNCTION UNIT UNDER DASHBOARD
B5	MAXI FUSE-1 BOX	-
B99	MAXIFUSE BOX ON BATTERY
C15	FACIA EARTH, DRIVER''S SIDE	-
F10	LEFT HEADLAMP ( FRONT )
F11	RIGHT HEADLAMP
H1	IGNITION SWITCH
M1	BODY COMPUTER
M10	ENGINE MANAGEMENT ECU	1056B
M10	ENGINE MANAGEMENT ECU
M50	ABS CONTROL UNIT ( FRONT )
M54	SELESPEED TRANSMISSION CONTROL UNIT	2127E
M60	AIR BAG CONTROL UNIT

Description - DIAGNOSTIC MULTIPLE CONNECTOR - Alfa Romeo GT 1.9 JTD 16V

The car is equipped with numerous self-diagnostic electronic control units.When a tester (Examiner or other instrument) is connected to the control units, self-diagnostic data can be read (parameters, errors) or active testing can be carried out.All tester lines are connected to the EOBD (European On Board Diagnosis) connector in line with EC directive 98/69 - ISO standard J1962, centralised on the Body Computer - connector G.Nodes conected to the network are connected via the B-CAN while the vehicle dynamic control network is tested via special K lines.The following are controlled via the B-CAN network:underfacia control unit;instrument panel;door control unit;radio or integrated radio-phone-navigation system device;climate control system ECU.For more detailsThe following are controlled via tester line K:engine management control unit;ABS control unit;Airbag control unit;SELESPEED control unit (if fitted).the gas discharge headlamp control units (if fitted)

Functional description - DIAGNOSTIC MULTIPLE CONNECTOR - Alfa Romeo GT 1.9 JTD 16V

The centralised EOBD tester connector is built into Body ComputerM1 - connector G. It is supplied directly at pin 16 from a line from fuse F39 of underfacia control unitB2; pins 4 and 5 are earthed.Pin 1 is connected by line K to the ABS control unitM50 See E7020 ABS Pin 3 is connected by line K to the Air Bag control unitM60Pin 7 is connected to the engine management control unit M10 via a K line or . Pin 7 is also connected to the SELESPEED control unit M54 . If fitted, the gas discharge headlamp control units F10 and F11 are connected to pin 12. Pins 6 and 14 are connected to the B-CAN network. Underfacia control unitB2, instrument panel E50, door control unit H44, radio (or built in radio-telephone-navigator) P20 and climate control ECU M70 are monitored and ''diagnosed'' via this network. Pins 2 and 10 are supplied for testing via the C-CAN network, which is not used in this version.