Data Link pin schematic, '97 OBS - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 8 Old 11-01-2012, 02:29 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2011
Posts: 17
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Question Data Link pin schematic, '97 OBS

I've got a '97 OBS with the 7.3 powerstroke, 2wd., Automatic

Multiple shops have tried to hook up to the OBD style connector under the dash and with no success. It's as if the computer doesn't exist.

The truck runs fine except for the occasional blinking O.D. light, which is why I'm trying to hook up and pull a code.

Yes the fuse is good and I have battery voltage to pin #16.

I have searched and searched and I have found numerous pictures and diagrams, but nothing that is like what I have in my truck.

My data link connector uses pins number 2, 4, 5, 10, 13 and 16.

That's only 6 pins. Every diagram and picture I've found uses 7 pins. I have had zero success in finding the exact configuration of the pin count and location that I have in this truck.

There are only 6 wires in the harness going to the plug and everything looks unaltered.

Can anyone out there tell me where these pins/wires go, especially to the PCM so that I can verify that it's not a wiring problem before I condemn the PCM.

Thanks for your time.

Tom
Ozonkiller is offline  
post #2 of 8 Old 11-02-2012, 08:36 AM
BANNED by Kris
 
BigFuel's Avatar
 
Join Date: Oct 2011
Location: Pasadena, CA
Posts: 6,200
Thanks: 51
Thanked 112 Times in 104 Posts
Mentioned: 0 Post(s)
Quoted: 34 Post(s)
Feedback Score: 0 reviews
Dumb question, the key is in run when you try to connect to the PCM correct? It won't work with the key off. I don't have my wiring diagram on me till late tonight so hopefully someone else will chime in sooner. I went to a shop once to get my wife's truck smogged and they couldn't get the scanner to connect to the PCM and told us the PCM was bad. The idiots didn't know that trucks do not conform to '97 ODB II requirements (they didn't have to conform till like 2000) and all they had to do was turn the key to RUN. I showed them how to use their equipment and drove away not to let them near the truck again.

Another question, does your speedo bounce a little as you drive. Can happen at specific speeds like between 40-50.

Matt
-'97 Mini Monster
-Bean's: 160/100 (FF Injectors), 2/ 6-POS chips (TW & Beans tunes), Overboost controller, E-Fuel
-BANKs: downpipe, full exhaust, gauges, intercooler
-Irate: T-4 kit, IC pipes, 3" Irate Plenums, BASB Turbo
-Stage II trans.
-Mag-Hytec trans. and pumpkin covers
-6637, CCV, IDM, 6.0 Fan, 49-Federal PCM swap, MAP line Mod
-370 Amp alt., 40k trans cooler, ADRENALINE PUMP
-twin on-board air w/ 10 gal. tank

-'15 F350 6.7L DRW 4x4

Re-pinning '97 Cali PCM to Federal

Last edited by BigFuel; 11-02-2012 at 08:39 AM.
BigFuel is offline  
post #3 of 8 Old 11-02-2012, 11:20 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2011
Posts: 17
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Yep,

Key On, key off. Nada, zero, zip.

Everything from borrowing my neighbor's scanner & Autozone to a couple of very reputable shops. Same results.

My plan is to meter some of the basic stuff, mainly the wiring before I decide to let someone else have a shot at it or stab a new PCM in it. I do have a line on a new, in the box PCM for fairly reasonable money.
Ozonkiller is offline  
post #4 of 8 Old 11-03-2012, 04:37 AM
Compression Ignition Addict
 
erics diesel's Avatar
 
Join Date: Nov 2011
Location: dodge center mn
Posts: 1,482
Thanks: 1
Thanked 13 Times in 13 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
not all scanners can read an obs diesel pcm

95 f250 eclb 4x4 under construction
96 f250 eclb 4x4 rosewood stage 1 injectors, bully dog 6 position chip, 6637 air filter, idm mod
erics diesel is offline  
post #5 of 8 Old 11-03-2012, 08:45 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2011
Posts: 17
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Yep, I'm aware of that. The trans and the diesel shops that I used were using scanners that looked like they belonged in an intensive care unit. They had all of the "Ford specific" variations of the "not quite OBD2" stuff.

I can understand that my neighbors Snap On scanner or the guys at Autozone couldn't pull it up but not these guys.
Ozonkiller is offline  
post #6 of 8 Old 11-05-2012, 12:34 PM
Compression Ignition Addict
 
Patrick Feeley's Avatar
 
Join Date: Oct 2011
Location: Tehachapi, CA
Posts: 2,225
Thanks: 0
Thanked 80 Times in 78 Posts
Mentioned: 0 Post(s)
Quoted: 5 Post(s)
Feedback Score: 0 reviews
Straight out of the 97 EVTM for C227, Data Link Connector:

Pin 2: Circuit 914 (T/O), Data (+) from PCM pin 16, through C202 (firewall feedthrough connector)
Pin 4: Circuit 57 (BK), Ground
Pin 5: Circuit 570 (BK/W), Ground through C202
Pin 10: Circuit 915 (PK/LB), Data (-) from PCM pin 15, through C202
Pin 13: Circuit 107 (P), PCM Input from PCM pin 13, through C202
Pin 16: Circuit 40 (LB/W), Hot at All Times from Underdash fuse 16 (15A)
All other pins are NOT USED

Cheers!

1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
Patrick Feeley is offline  
post #7 of 8 Old 11-05-2012, 02:51 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2011
Posts: 17
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
NOW THAT'S WHAT I'M TALKING ABOUT!!!

Thanks soooo much. That is exactly what I'm looking for. I'll just bet (I'm hoping) that it's at the firewall connector. I never thought to look there.

Thanks again for your time.

I'll let you know what I find.

Tom
Ozonkiller is offline  
post #8 of 8 Old 11-08-2015, 06:05 PM
Member
 
Join Date: Oct 2015
Posts: 30
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 2 Post(s)
Feedback Score: 0 reviews
holy thread revival batman.....

I have a similar issue. Not comms to PCM on Torque app or my Autel Scan tool. I used the above mentioned pin out and all seems normal except pin 2 has no voltage, ever. which connector is the right one on the firewall

1996 F-350 SRW 7.3 PSD Auto
2011 Shelby GT500 (DD)
2015 Explorer Sport (kid hauler)
2003 Jeep Liberty (daughter's)
finally03gt is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome