It's under the hood - in the engine compartment, right between the
intake manifold and the firewall, next to the passenger-side strut
tower. There are two connectors of interest: one is a 6-pin connector,
and the other is a single pin connector. They may be stuck into a single
gray or black plastic hood/cover embossed with "EEC Test".
Thanks - I found the EEC Test box but the code reader wouldn't
plug in to it. Different size connections. The reader I borrowed from
AutoZone said the data link Connector should be under the dash on
the driver's side or if not there a tag should be there giving the
location, but we couldn't find either. Cars sure have got more
complicated since I retired in December '85. I ran a foreign auto repair
shop from '67 to '85 and was my own head mechanic. Taught a lot of guys
to be mechanics. This car belongs to one of my grandsons. Died on the
highway and he burned out the starter trying to start it. We replaced
that but the fuel pump won't work unless we put 12 volts to the
pink/black wire coming from the relay module and we can't get any spark,
even by putting 12 volts to the red/green wire coming from the relay
module. Putting voltage there does start the cooling fan but it shouldn't
as far as I can make out. That's why we borrowed the OBD II AutoScanner
but now we have to plug it in. It has D shaped male end with 7 skinny
pins in 2 rows with gaps between some of them.
Drew P. Droz
94 Taurus (or any other Ford for of that vintage) will be EEC-IV, not OBDII.
OBDII started in late 95 or 96.
You can use an EEC-IV code reader, but there isn't really need for that. A
test light and a paper clip are just as good. Tons of info on the web how to
do this and how to interpret the codes. Just google for EEC-IV diagnostics
or some such.
Incidentally, the test connector has a pin for testing the fuel pump,
bypassing the ECM.
Be warned that EEC-IV most likely will not self-diagnose for ignition
If I may, seems that you better consult the EVTM (electrical schematics
booklet) and apply some systematic troubleshooting procedure before blindly
applying battery voltage here and there. This is a fuel injected, computer
controlled engine, and there is a good chance that you will damage something
and make the problem worse than it is.
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