| The following chart is of the Evo VIII ECU pins and their corresponding functions. If you are installing any electronics that require a connection to specific ECU functions (ie. O2 sensor, MAS, etc.), this chart will help you locate the appropriate wires.
NOTE: Extreme caution should always be taken when tapping ECU wires. Disconnect the battery and triple check that the wire(s) you are working with are from the pin(s) you need. Due to the cluster of wiring at the ECU, it is very easy to lose count or transpose locations when determing pin locations and/or loose track of the associated wire.
|
Evo VIII ECU Pinouts |
| 1 |
#1 Injector |
| 2 |
#3 Injector |
| 3 |
Fuel Pressure solenoid |
| 4 |
Idle Speed Control Motor Coil A1 |
| 5 |
Idle Speed Control Motor Coil B1 |
| 6 |
EGR Solenoid |
| 7 |
|
| 8 |
A/C |
| 9 |
Evap Emissions Purge Solenoid |
| 10 |
Ignition Power Transistor (A- to coil for 1&4 cyl) |
| 11 |
Wastegate solenoid |
| 12 |
12V switched power supply |
| 13 |
Chassis ground |
| 14 |
#2 Injector |
| 15 |
#4 Injector |
| 16 |
|
| 17 |
Idle Speed Control Motor Coil A2 |
| 18 |
Idle Speed Control Motor Coil B2 |
| 19 |
MAS sensor reset signal |
| 20 |
|
| 21 |
Cooling Fan Motor Relay (PWM Output) |
| 22 |
Fuel pump relay |
| 23 |
Ignition power transistor (B - to coil for 2&3 cyl) |
| 24 |
A/C |
| 25 |
12V switched power supply |
| 26 |
Chassis ground |
| |
|
| 31 |
A/C |
| 32 |
A/C |
| 33 |
Generator G terminal |
| 34 |
|
| 35 |
FMIC sprayer |
| 36 |
CEL |
| 37 |
Power Steering pressure switch (input) |
| 38 |
MFI Relay |
| 39 |
Fuel Pump Relay (increase pressure for higher loads) |
| 40 |
Sensor Ground (IAT, Cam and Crank Angle Sensors) |
| 41 |
Generator FR terminal |
| 42 |
|
| 43 |
Clutch Position Switch (Input) |
| 44 |
FMIC sprayer |
| 45 |
A/C Switch |
| 46 |
Fuel level (input) |
| |
|
| 51 |
Immobilizer ECU |
| 52 |
|
| 53 |
|
| 54 |
O2 sensor heater (rear) |
| 55 |
Evap vent solenoid valve |
| 56 |
|
| 57 |
FMIC sprayer |
| 58 |
Tach signal (output) |
| 59 |
|
| 60 |
O2 sensor heater (front) |
| 61 |
Fuel Tank Differential Pressure Sensor |
| 62 |
Data Link Connector |
| |
|
| 71 |
Starter (signal) |
| 72 |
IAT sensor (signal) |
| 73 |
Manifold differential presssure sensor |
| 74 |
Sub fuel level sensor |
| 75 |
O2 sensor (rear) |
| 76 |
O2 sensor (front) |
| 77 |
Fuel temperature sensor |
| 78 |
Knock sensor |
| 79 |
Data link connector |
| 80 |
Backup power (12V constant) |
| 81 |
5V Sensor Power Supply (TPS, MDP, Baro, Fuel Tank Press Sensor) |
| 82 |
Ignition |
| 83 |
Coolant temp sensor (signal) |
| 84 |
TPS sensor (signal) |
| 85 |
Barometric pressure sensor (signal) |
| 86 |
Vehicle speed sensor (signal) |
| 87 |
|
| 88 |
Cam position sensor (signal) |
| 89 |
Crank position sensor (signal) |
| 90 |
MAS sensor (signal) |
| 91 |
FMIC sprayer |
| 92 |
Sensor Ground (O2 Sensors, Coolant Temp, TPS, MDP, Fuel Tank Press Sensor) | | 
