North American Turbocoupe Organization



EEC Test connector
bnate Offline
Junior Member
#1
Can anyone tell me what color and what positions the wires go to on the test plug on an 88? Theres 3 wires in mine and a 4th hanging loose with no plastic on it. Ive tried hooking it up to my scanner and it dont seem to want to talk to the PCM, I think someone may have fiddled with the connectors in the plug.
88 TC 5spd- mostly stock dd 155K SOLD, 96 LX V8- all stock spare on 3rd intake in 130K, 96 F250 diesel 4x4- hauler 177K, 93 F250 diesel 4x4- plow truck 72K, 71 F100- toy soon to get V10 power, 01 H-D XL1200S, 65 GTO- neverending project . I have too much crap.
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Pete D Offline
Administrator
#2
See diagram here http://www.turbotbird.com/techinfo/Retri..._codes.htm

Yes it sounds like the connector is missing off the STI single wire.
Pete Dunham


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bnate Offline
Junior Member
#3
I think the wires may have been switched around in the plug, when I hook my scanner up or a jumper wire theres no response from the PCM, all that happens is the fan turns on.
88 TC 5spd- mostly stock dd 155K SOLD, 96 LX V8- all stock spare on 3rd intake in 130K, 96 F250 diesel 4x4- hauler 177K, 93 F250 diesel 4x4- plow truck 72K, 71 F100- toy soon to get V10 power, 01 H-D XL1200S, 65 GTO- neverending project . I have too much crap.
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thumper Offline
Posting Freak
#4
The fans turning on is the beginning of the test mode. They'll run for the entire duration of the KOEO test. I presume you are talking about the KOEO test....

Hook it up as you were and let it run for at least a minute. I think it should be less than that, but you will see either code 1-1 (no fault) or any combination of codes indicating system faults.
A.K.A. Corey Bennett

1988 TC: white, all options, 5-speed swap, K&N cone filter, "Ranger" roller camshaft, .60/.63 T3, NXS (Gillis-style) Boost Valve, Bosch BOV w/ check valve, Stinger 3" with axle dump (18" glass pack), 95A 3G

Some pictures: http://s639.photobucket.com/albums/uu111/cbennett4041/
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bnate Offline
Junior Member
#5
Ok, went out and put the jumper in, let the fan run about 5 minutes before I gave up. Maybe the CEL is burnt out, it doesnt buld check when you turn the key on. That doesn't make sense my scanner wouldn't get results either though.
88 TC 5spd- mostly stock dd 155K SOLD, 96 LX V8- all stock spare on 3rd intake in 130K, 96 F250 diesel 4x4- hauler 177K, 93 F250 diesel 4x4- plow truck 72K, 71 F100- toy soon to get V10 power, 01 H-D XL1200S, 65 GTO- neverending project . I have too much crap.
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junkedturbo Offline
Senior Member
#6
from the wiring diagram:

BLK/WHT= VAM wire goes to the test connector then goes to the signal return wiring

TAN/LT-GRN= pin 22 goes to the test connector then goes to the fuel pump relay

YEL/BLK= pin 17 goes to the test connector and connects to the TAN wire

TAN= starts from the test connector and leads to the instament panel(check engine light)

If I'm right and please correct me if wrong, you jump the single WHT/RED wire(STI) to the TAN YEL/BLK wires then take an LED and jump it between a 12v source and BLK-WHT wires to get your codes.

So if you take that and the diagram with what pins in the test connector to jump you should be able to set them back were they use to be Smile
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bnate Offline
Junior Member
#7
Awesome, thats what I needed to know.
88 TC 5spd- mostly stock dd 155K SOLD, 96 LX V8- all stock spare on 3rd intake in 130K, 96 F250 diesel 4x4- hauler 177K, 93 F250 diesel 4x4- plow truck 72K, 71 F100- toy soon to get V10 power, 01 H-D XL1200S, 65 GTO- neverending project . I have too much crap.
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Jeff K Offline
Administrator
#8
Pretty common for a PO to take the CEL bulb out if it is on at the time of sale.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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junkedturbo Offline
Senior Member
#9
A PO?

public office, police officer, privite opts :confused:
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tirefryr Offline
Junior Member
#10
Previous Owner.
Looking for a nice TC to massage into the perfect DD. Oh how I miss my bird!
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