Pin |
ECU Pin |
ECU Function |
Pin |
ECU Pin |
ECU Function |
A1 |
Aux 7 |
Temperature Gauge Control |
C1 |
Injector 5 (Aux) |
NB O2 Heater |
A2 |
Aux 12 |
Air Control Valve Solenoid |
C2 |
Aux 8 |
Alternator Control (pull low to reduce voltage) |
A3 |
Aux 13 |
Evap bypass |
C3 |
nc |
|
A4 |
Aux 14 |
Evap canister vent shut |
C4 |
Ignition 1 |
Ignition |
A5 |
nc |
|
C5 |
nc |
|
A6 |
Aux 15 |
Evap canister purge valve |
C6 |
nc |
|
A7 |
nc |
|
C7 |
Ground (Signal) |
|
A8 |
nc |
|
C8 |
Ground (Crank) |
|
A9 |
DI 3 |
Gearbox Speed |
C9 |
Trig 1 (Crank) |
Trigger 1 |
A10 |
nc |
|
C10 |
DI 2 |
|
A11 |
nc |
|
C11 |
nc |
|
A12 |
nc |
|
C12 |
Ignition 2 |
Ignition |
A13 |
nc |
|
C13 |
Ignition 3 |
Ignition |
A14 |
nc |
|
C14 |
Ignition 4 |
Ignition |
A15 |
Aux 1 / nc |
Fuel Pump (USDM) |
C15 |
nc |
|
A16 |
nc / Aux 1 |
Fuel Pump (JDM) |
C16 |
An Volt 5 |
NB O2 Sensor |
A17 |
Aux 2 |
AC Clutch |
C17 |
An Volt 1 |
MAP (factory sensor) |
A18 |
Aux 3 |
CE Light |
C18 |
Ground (Signal) |
|
A19 |
Ignition 6 (Aux) |
tacho |
C19 |
+5V Out (MAP) |
|
A20 |
Aux 4 |
Engine Fan |
C20 |
Ground (Cam A) |
|
A21 |
nc |
|
C21 |
Trig 2 (Cam A) |
Trigger 2 |
A22 |
nc |
|
C22 |
Knock 1 |
Knock |
A23 |
nc |
|
C23 |
nc |
|
A24 |
DI 4 |
Start Position |
C24 |
nc |
|
A25 |
nc |
|
C25 |
An Temp 1 |
IAT |
A26 |
DI 5 |
PS Switch |
C26 |
An Temp 2 |
ECT |
A27 |
DI 6 |
AC Request |
C27 |
An Volt 2 |
TPS (Main) |
A28 |
nc |
|
C28 |
+5V Out |
|
A29 |
An Volt 3 |
Fuel Tank Pressure |
C29 |
DI 1 |
|
A30 |
An Volt 4 |
Electrical Load Detection |
C30 |
Ground (Cam B) |
|
A31 |
nc |
|
C31 |
nc |
|
A32 |
DI 7 |
Brake |
|
||
|
E-Throttle Relay |
Aux 6 |
|
||
B1 |
+14V |
ECU Power |
E-Throttle 1 |
Ground (Signal) |
|
B2 |
Ground |
|
E-Throttle 2 |
+5V Out |
|
B3 |
Injector 2 |
Injection |
E-Throttle 3 |
An Volt 10 |
|
B4 |
Injector 3 |
Injection |
E-Throttle 4 |
An Volt 9 |
|
B5 |
Injector 4 |
Injection |
E-Throttle 5 |
An Volt 8 |
|
B6 |
nc |
|
E-Throttle 6 |
An Volt 7 |
|
B7 |
nc |
|
E-Throttle 7 |
Aux 10 |
|
B8 |
nc |
|
E-Throttle 8 |
Aux 9 |
|
B9 |
+14V |
ECU Power |
|
||
B10 |
Ground |
|
Expansion 1 |
Ground (Signal) |
|
B11 |
Injector 1 |
Injection |
Expansion 2 |
Aux 11 |
|
B12 |
Ignition 5 (Aux) |
VTEC Solenoid |
Expansion 3 |
Aux 6 |
|
B13 |
nc |
|
Expansion 4 |
DI 11 |
|
B14 |
nc |
|
Expansion 5 |
DI 10 |
|
B15 |
nc |
|
Expansion 6 |
DI 9 |
|
B16 |
nc |
|
Expansion 7 |
DI 2 |
|
B17 |
nc |
|
Expansion 8 |
DI 1 |
|
B18 |
nc |
|
Expansion 9 |
Ground (Signal) |
|
B19 |
nc |
|
Expansion 10 |
Aux 16 |
|
B20 |
Ground |
|
Expansion 11 |
nc |
|
B21 |
nc |
|
Expansion 12 |
nc |
|
B22 |
Ground |
|
Expansion 13 |
nc |
|
B23 |
Aux 5 |
ISC Solenoid |
Expansion 14 |
nc |
|
B24 |
nc |
|
Expansion 15 |
An Volt 12 |
|
B25 |
nc |
|
Expansion 16 |
An Volt 6 |
|
Note: Ignition 5 and 6 have extra hardware on them to control the VTEC Solenoid and Tacho meaning they can't be used for ignition.
Note: Injector Drives 7 and 8 aren't exposed and don't have the hardware required to drive Injectors.