Pin Descriptions 


Connector A: Lambda/Injection/Ignition 

(15.0A Max continuous current - wire gauge dependant)

       


 Looking into ECU connector


Pin

Channel Name

A1

Injection Channel 9

A2

Injection Channel 10

A3

Injection Channel 11

A4

Injection Channel 12

A5

Injection Channel 13

A6

Injection Channel 14

A7

Injection Channel 15

A8

Ignition Channel 9

A9

Ignition Channel 10

A10

Lambda 1 Heater -

A11

Lambda 2 Heater -

A12

Injection Channel 16

A13

ECU Ground

A14

Ignition Channel 11

A15

Ignition Channel 12

A16

Lambda 1 Heater +

A17

Lambda 2 Heater +

A18

Lambda 1 Nernst Cell (Vs)

A19

ECU Ground

A20

Lambda 2 Cal Resistor (CalR)

A21

Lambda 2 Nernst Cell (Vs)

A22

Lambda 2 Pump Cell (Ip)

A23

Lambda 2 Virtual Ground (VGnd)

A24

Lambda 1 Cal Resistor (CalR)

A25

Lambda 1 Pump Cell (Ip)

A26

Lambda 1 Virtual Ground (VGnd)




Connector B: Auxiliary Outputs /Fuel/Ignition/Ground

(15.0A Max continuous current - wire gauge dependant)



Looking into ECU connector



Pin

Channel Name

Pin

Channel Name

B1

Injection Channel 1

B18

Auxiliary Output 9

B2

Injection Channel 2

B19

Auxiliary Output 10

B3

Injection Channel 3

B20

Auxiliary Output 11

B4

Injection Channel 4

B21

Auxiliary Output 12

B5

Injection Channel 5

B22

Auxiliary Output 13

B6

Injection Channel 6

B23

Auxiliary Output 14

B7

Injection Channel 7

B24

Auxiliary Output 15

B8

Injection Channel 8

B25

Auxiliary Output 16

B9

ECU Ground

B26

Ignition Channel 1

B10

Auxiliary Output 1

B27

Ignition Channel 2

B11

Auxiliary Output 2

B28

Ignition Channel 3

B12

Auxiliary Output 3

B29

Ignition Channel 4

B13

Auxiliary Output 4

B30

Ignition Channel 5

B14

Auxiliary Output 5

B31

Ignition Channel 6

B15

Auxiliary Output 6

B32

Ignition Channel 7

B16

Auxiliary Output 7

B33

Ignition Channel 8

B17

Auxiliary Output 8

B34

ECU Ground



Connector C: Signal

(15.0A Max continuous current - wire gauge dependant)


  Looking into ECU connector



Pin

Channel Name

Pin

Channel Name

C1

ECU Ground

C18

Digital Input 9

C2

Analog Input Channel 1 

C19

Digital Input 10

C3

Analog Input Channel 2

C20

Digital Input 11

C4

Analog Input Channel 3

C21

Digital Input 12

C5

Analog Input Channel 4

C22

Digital Input 13

C6

Analog Input Channel 5

C23

Digital Input 14

C7

Analog Input Channel 6

C24

Analog Input Channel 16

C8

Analog Input Channel 7

C25

Analog Sensor 0V Reference

C9

Analog Input Channel 8

C26

ECU Ground

C10

Analog Input Channel 9

C27

Digital Input 1

C11

Analog Input Channel 10

C28

Digital Input 2

C12

Analog Input Channel 11

C29

Digital Input 3

C13

Analog Input Channel 12

C30

Digital Input 4

C14

Analog Input Channel 13

C31

Digital Input 5

C15

Analog Input Channel 14

C32

Digital Input 6

C16

Analog Input Channel 15

C33

Digital Input 7

C17

Analog Sensor 0V Reference

C34

Digital Input 8



Connector D: Power/Communications/Triggers/Knock

(15.0A Max continuous current - wire gauge dependant)


Looking into ECU connector


Pin

Channel Name

D1

ECU 14V Supply

D2

Auxiliary Output 13-16 14V Supply

D3

Sensor Supply 8V

D4

Crank Index Sensor +

D5

Crank Index Sensor -

D6

Sync Sensor +

D7

Sync Sensor -

D8

CAN 1H

D9

EFI Relay Output (Low Side 200mA)

D10

CAN 2H

D11

Knock 1 +

D12

Knock 1 -

D13

Shield (Crank/Cam/ Knock)

D14

CAN 1L

D15

Ignition Switch Input

D16

CAN 2L

D17

Knock 2 +

D18

Knock 2 -

D19

Analog Output (0.0 - 5.0V)

D20

Auxiliary Output 9-12 14V Supply

D21

Sensor Supply Vref1: 5.0V

D22

Sensor Supply Vref2: 5.0V

D23

Ethernet Tx +

D24

Ethernet Tx -

D25

Ethernet Rx +

D26

Ethernet Rx -


Important Notes


Auxiliary Output Channels 13-16

These are high current Half bridge drivers which switch either to ground or 14V i.e.  they do not have a high impedance or OFF state.  When the ECU is powered OFF these Auxiliary Channels by default will be switching to ground. This means:

  1. Solenoids or relays connected to these outputs should not use a constant or hot battery feed.
  2. During the ECU powerup sequence, any solenoid or relay connected to these outputs should have a managed power feed to avoid momentary switching during powerup.


Analog Sensor 0V Reference (Pin C17, C25)

These pins should be connected directly to the 0V (Ground) pin on any low current analog sensor, for example Pressure or Temperature.

  • DO NOT connect the ECU pins C17, C25 directly to the Engine Block or ECU Ground. These are dedicated and specialised ground outputs for all analog channels and should be connected directly to the sensor.
  • DO NOT connect frequency-based sensors to these pins; for example, an Ethanol content sensor. The sensor 0V pin should be connected to the ECU ground. 


Half Bridge Driver Power Supply Inputs (Pin D20, D2)

Pin D20 is a dedicated power supply for Auxiliary Channels 9-12. Power must be supplied to this pin for these channels to operate correctly. In non-DBW (Drive by Wire) applications the ECU Supply power can be shared, assuming the wire gauge has a sufficient rating for the current demand. In DBW applications power to this pin MUST come from an ECU controlled DBW Relay.


Pin D2 is a dedicated power supply for Auxiliary Channels 13-16. Power must be supplied to this pin for these Auxiliary channels to operate correctly.