Alfa Romeo Selespeed system

Home - Home Basic Selespeed Concept - Introduction - System components Hydraulic system - Overview - Operation System components - Electro-hydraulic groep - Solenoid valves and actuators - Electric pump - Measuring sensors - Drivers controls - Selespeed ecu pin out System operation - Overview of operation - System activation - Functioning with engine off - Engine start - Car start - Car stop - Semiautomatic MAN operation - Automatic CITY operation - Fault warnings - Bump start - Parking the car - Towing Routine maintenance - Selespeed oil level Faults and troubleshooting - System diagnostics - Fault downgrade table - The car jerks - Noisy gearbox - The car doen't start - Gears are not engaged - Gears are not engaged CITY mode - Gears are locked - Car revs on start on - Car goes to idle on its own - During gear shifts car revs - City> manual uncommanded - Manual> City uncommanded - Uncommanded engine switch off - Selespeed fault flashes on display Faults and troubleshooting - P2 - Oil level check - P3 - Oil leak check - P4 - Oil pressure check - P5 - Electric pump op check - P6 - Clutch stop pin adjustment - P7 - Brake pedal switch check - P8 - Buttons on steering wheel and gear level check - P9 - CITY button check - P11 - Engagement of all gears with gear shift lever and engine off - P14 - Clutch drag check - P17 - Selespeed ecu errors - P18 - clutch disk speed sensor check with road test 156 2.0 JTS - Wiring diagrams

FAULTS and TROBLESHOOTINGS

Faulty component and down-grade performance table

The gearbox check control unit diagnosis, after ascertaining a fault takes action regarding the down-grade functioning. This data is indicated referring to the faulty component, in the table below:

FAULTY COMPONENT

Fault warning light

DOWN GRADING

Gear engagement solenoid valves (proportional)

On

Gear shift acceptance locked, gear engagement excluding idle (N) (vehicle stationary)

Gear selection solenoid valve (ON/OFF)

On

Gear shift acceptance locked, gear engagement excluding idle (vehicle stationary)

Engagement and selection position sensors

On

Long time for gear shift. Gear shift acceptance limited to 1, 2, R, N

Rev sensors: engine, gear input and gear output (car speed)

On

Gear shift acceptance limited to 1, 2, R, N

Oil pressure sensor

On

Electric pump control in open-loop

Gear request lever switches

On

Switching in automatic mode "CITY", cannot engage R

Buttons on steering wheel switches

On

Does not accept commands from steering wheel

Clutch solenoid valve (proportional)

On

Clutch control lock, automatic shift to idle (N) (vehicle stationary)

Clutch position sensor

On

Clutch control lock, automatic shift to idle (N) (vehicle stationary)

Pump relay control

On

Vehicle stationary

Buzzer control

On

Continual functioning

Start enable relay control

On

Gear shift acceptance limitation for 1, 2, R, N

Brake status switch

On

With engine off does not accept gear change, engine only starts with gear in idle (N)

Message transmission CAN line

On

C.C.M. does not check torque with city disabled

Message receiving CAN line

On

Gear shift acceptance limitation for 1, 2, R, N C.C.M. does not check torque

CFC 208F microprocessor

On

Gear shift acceptance limitation for 1, 2, R, N

Control unit CFC 208F earth

On

Total system lock

CFC 208F memory

On

Gear shift acceptance limitation for 1, 2, R, N

Display serial line control

On

Gear engaged not displayed

Accumulator discharged

On

No recovery

Pump relay glued

On

No recovery

Accelerator pedal

On

1, 2, R, N engagement indication not valid and limitation of engine revs.