SPEEDUINO-A-18 Proto area 5 (clutch)
SPEEDUINO-A-21 O2 sensor
SPEEDUINO-A-16 Proto area 3 (fuel pump)
0V sensor
0V sensor
5V ref
SPEEDUINO-A-20 Inlet air temp (IAT)
SPEEDUINO-A-19 Coolant temp (CLT)
SPEEDUINO-A-14 Proto area 1 (flex fuel)
SPEEDUINO-A-1 Injector 1
GND
ECU power (control-unit relay)
5V ref
SPEEDUINO-A-24 Cam input / VR2+
GND
SPEEDUINO-A-36 Idle 2 (3-wire idle)
SPEEDUINO-A-37 PWM idle
SPEEDUINO-A-7 Ignition 1
OEM-A
Stock ECU being replaced
1Starter signal (term 50)
2Oxygen (lambda) sensor signal
3Fuel pump relay control
5Knock sensor return
6Sensor ground (CTS/Hall/AFM/throttle)
8Hall sender supply (distributor)
9Intake air temperature sensor
10Coolant temperature sensor
11Idle/WOT throttle switch
12Injector driver (batch, all 4)
13Ground
14ECU power (control-unit relay)
17AFM potentiometer supply
18Hall sender signal (engine speed)
19Ground
22Idle stabilizer valve coil 1
23Idle stabilizer valve coil 2
25Ignition timing signal to TCI