Ford EEC-IV (Electronic Engine Control IV) uses a 60-pin connector on the ECM for all engine management I/O. Used on Ford vehicles from approximately 1984 to 1995 and remains popular for performance tuning.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | KAPWR | Keep alive power for ECM memory | PWR |
| 2 | HEGO | Heated exhaust gas oxygen sensor | ADC |
| 3 | TPOUT | TP output sensor | ADC |
| 7 | ECT | Engine coolant temperature | ADC |
| 10 | KAPWR | Keep alive power | PWR |
| 16 | IGN | Ignition timing output | I/O |
| 22 | STO | Self test output | BUS |
| 26 | SIG RTN | Sensor signal return ground | GND |
| 37 | VREF | 5V sensor reference voltage | PWR |
| 40 | PWR GND | Power ground | GND |
| 46 | SIG RTN | Signal return | GND |
| 57 | PWR GND | Power ground | GND |
| 60 | INJ1 | Injector bank 1 | I/O |