Alfa Romeo 159 ECU pinout
8-channel configuration
Connector A
Pin / Signal
- 1 Key-on (+15)
- 2 Rear buzzer signal (-)
- 3 Not connected
- 4 Parking system on/off button
- 5 Negative signal from trailer ECU (where fitted)
- 6 Not connected
- 7 B-CAN A
- 8 Ground
- 9 Not connected
- 10 Rear buzzer (+)
- 11 Not connected
- 12 Not connected
- 13 Parking system on/off LED
- 14 B-CAN B
- 15 Not connected
- 16 Not connected
Connector B
Pin / Signal
- 1 Front sensor ground
- 2 Front sensor power
- 3 Front buzzer signal (-)
- 4 Front buzzer signal (+)
- 5 Left outer front sensor signal
- 6 Left inner front sensor signal
- 7 Right inner front sensor signal
- 8 Right outer front sensor signal
- 9 Not connected
- 10 Not connected
- 11 Not connected
- 12 Not connected
Connector C
Pin / Signal
- 1 Right inner rear sensor ground
- 2 Right inner rear sensor signal
- 3 Left inner rear sensor signal
- 4 Right outer rear sensor signal
- 5 Left outer rear sensor signal
- 6 Right inner rear sensor power
- 7 Left inner rear sensor ground
- 8 Right outer rear sensor ground
- 9 Left outer rear sensor ground
- 10 Left inner rear sensor power
- 11 Right outer rear sensor power
- 12 Left outer rear sensor power
Alfa Romeo 159 ECU pinout
A - Front connector (dashboard wiring harness, blue)
PIN / SIGNAL
- 1 Ground
- 2 Key-on power
- 3 (Not connected)
- 4 (Not connected)
- 5 Front collision sensor ground
- 6 (Not connected)
- 7 B-CAN A line
- 8 B-CAN B line
- 9 Passenger airbag deactivation key (+)
- 10 Passenger airbag deactivation key (-)
- 11 (Not connected)
- 12 Front collision sensor signal
- 13 Passenger airbag - first stage (-)
- 14 Passenger airbag - first stage (+)
- 15 Driver airbag - first stage (+)
- 16 Driver airbag - first stage (-)
- 17 Passenger airbag - second stage (-)
- 18 Passenger airbag - second stage (+)
- 19 Driver airbag - second stage (+)
- 20 Driver airbag - second stage (-)
- 21 Passenger knee airbag (-)
- 22 Passenger knee airbag (+)
- 23 Driver knee airbag (+)
- 24 Driver knee airbag (-)
B - Rear connector (rear wiring harness, black)
PIN / SIGNAL
- 1 Driver window airbag (-)
- 2 Driver window airbag (+)
- 3 Passenger window airbag (+)
- 4 Passenger window airbag (-)
- 5 Driver side airbag (-)
- 6 Driver side airbag (+)
- 7 Passenger side airbag (+)
- 8 Passenger side airbag (-)
- 9 (Not connected)
- 10 (Not connected)
- 11 (Not connected)
- 12 (Not connected)
- 13 Driver belt pretensioner (-)
- 14 Driver belt pretensioner (+)
- 15 Passenger belt pretensioner (+)
- 16 Passenger belt pretensioner (-)
- 17 (Not connected)
- 18 Passenger presence sensor signal
- 19 Driver seat belt reminder switch signal
- 20 Passenger seat belt reminder switch signal
- 21 Driver side collision sensor ground
- 22 Seat belt reminder buzzer signal
- 23 Passenger side collision sensor ground
- 24 (Not connected)
- 25 Passenger airbag deactivated warning light
- 26 Seat belt reminder warning light
- 27 Driver side collision sensor power
- 28 Passenger side collision sensor power
- 29 (Not connected)
- 30 (Not connected)
- 31 (Not connected)
- 32 (Not connected)
Alfa Romeo 159 Ultrasound sensor Pinout
Pin / Signal
- 1 Sensor power supply
- 2 Sensor signal
- 3 Sensor ground
The two buzzers (one front and one rear) inform the driver on the distance and indicate system failures. The frequency and volume of the warnings are controlled by the ECU.
