PDI Toyota OBD2 connector Diagnostic Port with 4 wires.

For conversions installing the factory 1HDFTE engine into models with not OBD connector – these include 80 series and some HZJ105.

The connector comes pre-wired for an earth, constant (12V) power, SIL and TC.  The opposite gender connector is supplied with 2 wires joined to put the ECU into diagnostic mode to flash the check engine light (for code reading).