Alfa Romeo GT 2.0 JTS – ROBOTIZED GEARBOX – – Smart gearbox – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

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Wiring diagram - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS

ROBOTIZED GEARBOX - WIRING DIAGRAM Alfa Romeo GT 2.0 JTS

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Components - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS

Component code	Description	Reference to the assembly
B1	JUNCTION UNIT	-
B1	JUNCTION UNIT
B1	JUNCTION UNIT
B2	JUNCTION UNIT UNDER DASHBOARD
B99	MAXIFUSE BOX ON BATTERY
C10	FRONT LEFT EARTH ( FRONT )	-
C11	RIGHT FRONT EARTH ( FRONT )	-
C15	FACIA EARTH, DRIVER''S SIDE	-
D1	FRONT DASHBOARD COUPLING ( FRONT )	-
D6	REAR / ENGINE COMPARTMENT JUNCTION	-
D43	DASHBOARD/CENTRE CONSOLE COUPLING	-
D47	CLOCK SPRING ON STEERING WHEEL
D49	PEDAL ASSEMBLY JOIN	-
D79	TRANSMISSION SENSOR JUNCTION	-
D97	SHORT CIRCUITING COUPLING	-
E47	SELESPEED GEARBOX BUZZER	-
E50	INSTRUMENT PANEL
H1	IGNITION SWITCH
Interruttore Sport	Sport switch	-
H37	GEAR CONTROLS	2127A
H39	CITY SWITCH ( CONNECTORS )	-
I30	BRAKE PEDAL SWITCH ( FRONT )
J87	SELESPEED GEARBOX RELAY ( FRONT )	-
K58	STEERING SENSOR ( FRONT )
K68	SPEED SELECTION POTENTIOMETER ( CONNECTORS )	2127E
K69	GEAR SHIFT POTENTIOMETER	2127E
K77	TRANSMISSION INPUT SPEED SENSOR ( CONNECTORS )	2127E
K95	CLUTCH POSITION POTENTIOMETER ( CONNECTORS )	2127E
K96	PRESSURE SENSOR ON TRANSMISSION ( CONNECTORS )	2127E
L51	SOLENOID 1 GEAR ENGAGEMENT ( CONNECTORS )	2127C
L52	SOLENOID 2 GEAR ENGAGEMENT ( CONNECTORS )	2127C
L53	SOLENOID 3 GEAR ENGAGEMENT ( CONNECTORS )	2127C
L54	SOLENOID 4 GEAR ENGAGEMENT ( CONNECTORS )	2127C
L56	CLUTCH CONTROL SOLENOID	2127C
M1	BODY COMPUTER
M10	ENGINE MANAGEMENT ECU	1056B
M54	SELESPEED TRANSMISSION CONTROL UNIT	2127E
N47	SELESPEED GEARBOX ELECTRIC PUMP ( FRONT )	2127C

Component location - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS

ROBOTIZED GEARBOX - COMPONENT LOCATION Alfa Romeo GT 2.0 JTS

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Components - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS

Component code	Description	Reference to the assembly
B1	JUNCTION UNIT	-
B1	JUNCTION UNIT
B1	JUNCTION UNIT
B2	JUNCTION UNIT UNDER DASHBOARD
B99	MAXIFUSE BOX ON BATTERY
C10	FRONT LEFT EARTH ( FRONT )	-
C11	RIGHT FRONT EARTH ( FRONT )	-
C15	FACIA EARTH, DRIVER''S SIDE	-
D1	FRONT DASHBOARD COUPLING ( FRONT )	-
D6	REAR / ENGINE COMPARTMENT JUNCTION	-
D43	DASHBOARD/CENTRE CONSOLE COUPLING	-
D47	CLOCK SPRING ON STEERING WHEEL
D49	PEDAL ASSEMBLY JOIN	-
D79	TRANSMISSION SENSOR JUNCTION	-
D97	SHORT CIRCUITING COUPLING	-
E47	SELESPEED GEARBOX BUZZER	-
E50	INSTRUMENT PANEL
H1	IGNITION SWITCH
Interruttore Sport	Sport switch	-
H37	GEAR CONTROLS	2127A
H39	CITY SWITCH ( CONNECTORS )	-
I30	BRAKE PEDAL SWITCH ( FRONT )
J87	SELESPEED GEARBOX RELAY ( FRONT )	-
K58	STEERING SENSOR ( FRONT )
K68	SPEED SELECTION POTENTIOMETER ( CONNECTORS )	2127E
K69	GEAR SHIFT POTENTIOMETER	2127E
K77	TRANSMISSION INPUT SPEED SENSOR ( CONNECTORS )	2127E
K95	CLUTCH POSITION POTENTIOMETER ( CONNECTORS )	2127E
K96	PRESSURE SENSOR ON TRANSMISSION ( CONNECTORS )	2127E
L51	SOLENOID 1 GEAR ENGAGEMENT ( CONNECTORS )	2127C
L52	SOLENOID 2 GEAR ENGAGEMENT ( CONNECTORS )	2127C
L53	SOLENOID 3 GEAR ENGAGEMENT ( CONNECTORS )	2127C
L54	SOLENOID 4 GEAR ENGAGEMENT ( CONNECTORS )	2127C
L56	CLUTCH CONTROL SOLENOID	2127C
M1	BODY COMPUTER
M10	ENGINE MANAGEMENT ECU	1056B
M54	SELESPEED TRANSMISSION CONTROL UNIT	2127E
N47	SELESPEED GEARBOX ELECTRIC PUMP ( FRONT )	2127C

Description - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS

A control system known as SELESPEED supervises and regulates the operation of the manual gearbox by means of an electrohydraulic device.An electronic control unit manages a complex operating logic that allows the gearbox to be used in both "semiautomatic" conditions and in an automatic mode that delegates the management of gear changes to an electronic system.The electronic control unit converses with the engine management control unit via the CAN and two dedicated lines, one for the engine rpm signal, one for the fault diagnosis.The control unit operates an electro-hydraulic unit located on the gearbox, via a special electric pump, according to a complex operating logic.For more details, 2127 COMANDI EST.CAMBIO SELEZ. ELETTROIDRAULICA.The power supply lines for the control unit and the various system components (sensors and actuators) are protected by two fuses located in the junction unit under the dashboard.A special maxifuse in the engine compartment junction unit supplies the line for the system control pump.The autodiagnosis of the control unit indicates the source of these faults by turning on an instrument panel warning light. The SELESPEED control unit also sends the instrument panel information concerning the gear engaged which is shown in the display. For more details, 2127 COMANDI EST.CAMBIO SELEZ. ELETTROIDRAULICA.

Operational description - ROBOTIZED GEARBOX - Alfa Romeo GT 2.0 JTS

The SELESPEED control unit M54controls and regulatesthe entire gearbox management systemThe direct power supply for the control unit arrives from the batatery, via the line for the CPL maxifuse located on the battery (connector B99 B) and is protected by fuse F32 of the junction unit under the dashboard B2, at pin 27 of connector A of M54.The ignition-operated supply (15/54) reaches pin 28 of connector A of M54..Pins 1 and 2 of connector A of M54are earthed.A group of sensors and potentiometerson the gearbox inform the control unit which gear is engaged, the potentiometers are supplied from pin 73 of connector B; pin 66 provides the reference earth for the gear selector potentiometer K68returns a signal to pin 51 of connector A; the gear engagement potentiometer K69returns a signal to pin 39 of connector A; the oil pressure sensor for the hydraulic unit K96returns a signal to pin 40 of connector A.The clutch position potentiometer K95is supplied by pin 79 of connector B, receives a reference earth from pin 59, returns a signal to pin 52 of connector A of M54.Pins 38 and 50 of connector A M54are connected to the vehicle speed sensor (gearbox output) K77.The gear control assembly H37is connected to control unit M54to signal the gear engagement request: these signals are sent from connector A of H37to pins 67, 74, 68 of connector B of M54; and to pin 26 of connector A; the reference earth is received from pin 66 of connector B.Connector B of H37supplies the LED that lights up the actual panel, switched on by the line (INT) protected by fuse F51 of the junction unit under the dashboard B2.The button for selecting the CITY operating mode H39is located to the left of the gear selector lever andis connected to control unit M54at pin 77 of connector B: the control is lit up by the line (INT) protected by fuse F51 of the junction unit under the dashboard B2The button for selecting the SPORT logic H32 is located to the right of the gear selector lever and is connected to the control unit M54 at pin 71 of connector B: the control is lit up by the line (INT) protected by fuse F51 of the junction unit under the dashboard B2.The controls on the steering wheel connected via the clock spring D47, send signals to pin 75 of connector B of M54; the reference earth is received from pin 66 of connector B.Pin 69 of connector B of M54receives the signal coming from the brake lights switch I30, with an ignition-controlled power supply (INT) from fuse F37 of the junction unit under the dashboard B2.On the basis of the operating logic the control unit controls the electro-hydraulic unit located in the gearbox which produces the gear changes: pin 31 of connector A controls the electric pump N47which pressurizes the fluid in the hydraulic unit.The pump N47is controlled by a special relay J87(supplied by the line for fuse F3 of the engine compartment junction unit B1.The control unit then controls the opening of the hydraulic unit solenoid valves:the two gear engagement solenoid valves L51 and L52 are controlled from pins 32 and 44 of connector A of M54;the two gear engagement solenoid valves L53 and L54 are controlled by pins 29 and 3 of connector A of M54;the clutch control solenoid valve L56 is controlled by pin 43 3 of connector A of M54.From pin 42 of connector A of M54a safety signal departs for the starting enablement relay J5which gives the go ahead for starting: pin 50 of the starter motor A20; the starting request signal arrives at pin 76 of connector B.The control unit M54also manages the doors open signal: the driver''s front door open signal - lock N50- reaches pin 78 of connector B of M54.The command for the buzzer E47 leaves from pin 80 of connector B The autodiagnostic data can be read by connecting to connector G of the Body Computer M1pin 7: it receives the signals from pin 49 of connector A of M54. (the line is shared with the engine management control unit M10via the special diagnostic line.Pins 33 and 45 of connector A of M54 via the CAN send signals for the "gearbox failure" warning light located in the instrument panel E50, and for the gear indicator display for the actual instrument.The speedometer signal is acquired via the CAN.Pin 48 of connector A is connected to the engine management control unit M10from which the engine rpm signal is received.