ECU Connector Pinouts
Module Pins
The ECU module has five connections, which are (from left to right) Ignition, Injection, Main Engine, Panel, and Exhaust. The plugs are keyed and colored so that same size plugs cannot be plugged into each other. Pin numberings for each are shown below.
Ignition Connector - 8 Pins
| Pin | Connection |
|---|---|
| 1 | Coil 1- |
| 2 | Coil 2 - |
| 3 | Coil 3 - |
| 4 | Coil + (all coils) |
| 5 | Shield |
| 6 | Coil 4 - |
| 7 | Coil 5 - |
| 8 | Coil 6 - |
Main Engine Connector - 23 Pins
This is the white 23-pin connector.
Note: Numbers in parentheses under “Connection” below are the destination plug pin label.
| Pin | Connection |
|---|---|
| 1 | Oil Thermistor + (1) |
| 2 | Oil Thermistor – (2) |
| 3 | Throttle + (4) |
| 4 | Throttle – (1) |
| 5 | Throttle position 1 (6) |
| 6 | Throttle position 2 (5) |
| 7 | MPU TDC+ / Hall (*) |
| 8 | MPU TDC- (*) |
| 9 | Coolant Thermistor + (1) |
| 10 | Coolant Thermistor – (2) |
| 11 | DPV A (A) |
| 12 | DPV D (D) |
| 13 | Solenoid + |
| 14 | Throttle pot ground (*) |
| 15 | Shield (*) |
| 16 | Oil Pressure Sig (C) |
| 17 | Manifold pressure Sig (C) |
| 18 | 12V Power for hall (*) |
| 19 | DPV B (B) |
| 20 | DPV C (C) |
| 21 | Motor pot 5V (*) |
| 22 | Flywheel MPU + (A) |
| 23 | Flywheel MPU – (B) |
*These connections at the sensor vary numbering by engine or branch to multiple locations. See engine harness drawing.
Panel Connector - 23 pins
This is the black 23 pin connector
(Physical pin layout the same as the image in main engine section above)
| Pin | Connection |
|---|---|
| 1 | CAN H |
| 2 | CAN L |
| 3 | CAN GND |
| 4 | Shutdown input (Ground to shut down) |
| 5 | Alarm output |
| 6 | Fuel relay (low drive) |
| 7 | Digital in 2 |
| 8 | Digital in 1 |
| 9 | Battery - |
| 10 | Battery - |
| 11 | Battery - |
| 12 | (Reserved) |
| 13 | 12V sensor power |
| 14 | Analog ground |
| 15 | Analog ground |
| 16 | Battery + |
| 17 | Battery + |
| 18 | Battery + |
| 19 | (Reserved) |
| 20 | (Reserved) |
| 21 | Analog out 1 |
| 22 | Analog in 2 |
| 23 | Analog in 1 |
Exhaust Connection - 14 pin
| Pin | Connection |
|---|---|
| 1 | Knock Left |
| 2 | Precat TC + (yellow) |
| 3 | Precat TC - (Red) |
| 4 | Postcat TC + (yellow) |
| 5 | Postcat TC - (Red) |
| 6 | Precat O2 Htr - (C) |
| 7 | Postcat O2 Htr - (C) |
| 8 | Precat O2 Vs (B) |
| 9 | Postcat O2 Vs (B) |
| 10 | Knock Right |
| 11 | Precat O2 Htr + (D) |
| 12 | Postcat O2 Htr + (D) |
| 13 | Precat O2 Vref (A) |
| 14 | Postcat O2 Vref (A) |
Connector Reference
| Image | Plug Type | Sensor(s) | EMIT P/Ns |
|---|---|---|---|
 |
2 pin metri-pack 150 | Flywheel MPU | Body 15556
Wire Seal 15046 Terminal 15029 Clip 15555 |
 |
2 pin Deutsch DT | Oil temp thermistor
Coolant temp thermistor (usually further down the harness) |
Body 15127-0001
Lock 15127-0002 Terminal 15555-0002 |
 |
3 pin Metri-pack 150.2 | Oil Pressure Sensor
Manifold Pressure sensor |
Body 15557-0006
Terminal 15555-0007 |
 |
3 pin metri-pack 150.2 flat | Hall sensor (330xB engines) | Body 15557-0001
Terminal 15555-0001 |
 |
4 pin metri-pack 150 | Oxygen sensors (2), post catalyst is further along harness
Threaded hall sensor |
Body 15027
Wire seal 15046 Terminal 15029 Clip 15030 Boot 15026 |
 |
4 pin metripack 150.2 | DPV (valve) | Body 15024
Terminal 15025 Boot 15023 |
 |
Amphenol MQS 6 pin | Throttle body connector | Body 15127
Wire seal 15129 Terminal 15128 |
 |
Ring terminal | Coil harness
Starter solenoid + |
15560 |
 |
Ampseal 8-pin white | ECU Coil connector | Body 15104-0005
Terminal 15555-0008 |
 |
Ampseal 8-pin black | ECU injection Connector | Body TBD
Terminal 15555-0008 |
 |
Ampseal 23-pin white | ECU main engine harness connector | Body 15104-0003
Terminal 15555-0008 |
 |
Ampseal 23-pin black | ECU panel harness connector | Body 15104-0004
Terminal 15555-0008 |
 |
Ampseal 14-pin black | ECU exhaust harness connector | Body 15104-0006
Terminal 15555-0008 |
