This is the schematic for the ECM as used on the Buell later tubeframe (1999 - 2002) and XB9/XB12 (2003 - 2007) series.
| Black Connector | |||
| Pin | Pin Name | Description | Cable Colour |
| b1 | +12 V |
ECM power supply, switched battery power |
gray |
| b2 | GND ECM | ECM power supply ground | black |
| b3 | Fuell pump | Fuel pump control (to GND) | brown/yellow |
| b4 | CEL | Check engine lamp | black/yellow |
| b5 | Injector 1 | Front injector control | W/Y |
| b6 | Coil 1 | Front coil control | yellow/blue |
| b7 | Coil 2 | Rear coil control | blue/orange |
| b8 | Injector 2 | Rear injector control | green/gray |
| b9 | EVA feedback | Exhaust valve activator feedback | tan/violet |
| b1 | BAS | Bank angle sensor | light green/gray |
| b11 | GND Coil | Ground for coils | black |
| b12 | Tachometer | tachometer output | pink |
| Spade Connector | |||
| EVA control (XB12 only) | Exhaust valve activator control | white | |
| Gray Connector | |||
| Pin | Pin Name | Description | Cable Color |
| g1 | +5 V | Power supply for sensors | red/white |
| g2 | TPS | Throttle Position Sensor | violet/yellow |
| g3 | CPS | Camshaft position sensor | green/white |
| g4 | O2 | Exhaust gas oxygen sensor | viloet/gray |
| g5 | +12 V Keepalive | ECM keepalive power, unswitched from battery | yellow |
| g6 | CF | Cooling fan control (XB only) | black/orange |
| g7 | GND Sensors | Sensor ground | black/white |
| g8 | VSS | Vehicle speed sensor (XB only) | white |
| g9 | ETS | Engine temperature sensor | pink/yellow |
| g10 | IAT | Intake air temperature sensor | light green/yellow |
| g11 | RX | Serial data recive (TTL) | light green/red |
| g12 | TX | Serial data transmit (TTL) | violet/red |
Connectors are Deutsch DT06-12SB (black) and DT06-12SA (gray).
Image below shows view on sockets:
gray spade black
+-----------------+ +-----------------+
|1 2 3 4 5 6 | || |1 2 3 4 5 6 |
|12 11 10 9 8 7 | || |12 11 10 9 8 7 |
+-----------------+ +-----------------+
correct
incorrect