View Full Version : Pinouts

08-17-2006, 07:39 PM
I'm in the middle of making a harness to swap a JDM '92 or '93 3sgte into an
88 All-trac. The problem is the diagrams for the ECU wiring (that I got from this site) don't quite match the
harness on the JDM motor that is in the garage.

Specifically, the pins for Coldstart and the O2Heater are going to places
not listed on either of the diagrams. It's not the biggest deal because I
can trace the wiring to where they do go and just leave it the same way...
BUT, this harness has been hacked and used with an aftermarket system, so
I'm not sure if the pins have been swaped or whatever.

Worse comes to worse and I'll just wire up the old '90 computer that I have
(and can cross check against my car), but I'd like to at least find some
diagrams that match the JDM harness.

Anyone have any good pinouts - please send 'em my way



08-20-2006, 02:32 PM
I traced every wire to each sensor on the engine. Then I opened my ECU to expose the pinouts on the circuit board. Then I repined the ECU plugs to fit the pinouts on the board.

08-21-2006, 03:43 AM
JDM doesn't have the heater wire for the O2 sensor.
It also has different ac wiring.

It does have the cold start inj though.