Serial data is pin 9 on the DLC.

There is a tan wire for serial data. On the C105 connector (8 cavity, black, on the passenger side strut tower) this wire is located in cavity E on both 95 and 97 harnesses.

This wire is also located on the C220 connector (white, going into the car) on cavity F on the 95 harness, but it's not there on the 97 harness. So I'm assuming, the serial data is going to the DLC through the forward lamp harness on the 97. I guess once you have completed the modifications I listed in the previous post, you could try to see if you can get a connection to the PCM. Then if you don't, you could jump the wire in the cavity F on C220 to pin 9 on the DLC.

 

thanks for the help... gonna try it out tomorrow

 

there was no wire in cavity K... its a blank cavity, so i figured you were reffering to cavity A the pink wire... then manual said that was the power wire. got all connection hooked up checked all with a volt tester and all recieved power. still nothing no fuel pump prime no fire. hooked up serial data wire and still cant get a reading...

 

Of course there isn't. That's why you need to supply it. There isn't one on the forward lamp harness which belongs to your 97, but there is one on the 95 engine harness connector and you need to supply it with power from the injector fuse I mentioned above.

Did you supply power to D?

 

yea i supplied power to D... K is blank on BOTH sides... 95 and 97.

i i looked at Shoebox's diagrams and a couple of my wires dont match.. i noticed he had something for K also but mine is blank on both sides.

here are the colors on my connectors

C100 connector
95z28 97v6
A pink pink
B green/white grn/white
C green green
D orange BLANK
E brown BLANK
F Brown brown
G Pink Pink
H Dk Blue Dk Blue
J Dk Grn Dk Grn
K BLANK BLANK

C105 Connector
95 97
A Orange/Black BLANK
B PInk Pink
C Tan/Black BLANK
D BLANK Dk Green
E Tan Tan
F BLANK White
G Lt Blue Purple/ White
H BLANK Brown

 

dunno if this helps, but it hit me while i was at work.... my car model is a 97 but the car was manufactered in 96

 

also #9 on the fuse says injector, but #10 says engine sensors not injector. just throwin out every little detial i can think of that might solve this nightmare of mine.

 

Yea, you're right. I just checked a 95 harness I had laying around here and there isn't a wire in K on this one either.

The fact that your car was made in 96 doesn't matter.

Did you try jumping the serial data wire like I mentioned earlier?
I think right now your PCM is either not getting power or VATS is not allowing the fuel pump to run, but probably the first one.

By the way, does your fuel pump run if you prime it through that connector on the passenger side strut tower?

 

havent tried priming the fuel pump... do i just supply power to that lead? and i also did the serial data and no readings. i just figured that the computer was still not gettin power

 

To prime the fuel pump, jump 12v to the fuel pump prime connector. It's a single wire with a small black connector on the passenger side strut tower.

 

ok if it primes what will this indicate? i also looked at all the power feeds and all are recieving power. D was the only one without power and i hooked it up and checked it for power and it did.

 

Power is going to the PCM through the following connectors/pins:

Black connector - B15 and B30 and B31.
Blue connector - D3

Ground is going to the PCM through the following connectors/pins:

Blue connector - D1
Gray connector - C32
Red connector - A18


To check for power, measure voltage between pin D3 and D1 on the blue connector. You can also check continuity between the passenger side strut tower ground bolt to D1, but if you're getting power from D3 and D1, you should be fine.

Also, did you hook up the copper braided ground strap from the engine to the body? (on the driver side)

 

If it primes it means there is no problem with the pump or the wiring going to the pump.

 

kinda lost now... are these the connectors that are on the back of the PCM... yes the copper wire is connected... ive checked all sensors and grounds several times jsut to be sure

 

Yea, those are the connectors going in the PCM. Just pull the blue one out and take your reading.