paper clip trick
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Junior Member
Joined: Sep 2003
Posts: 55
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From: Cincinnati Ohio
Car: 89 Firebird Formula 350
Engine: TPI 350
Transmission: Auto
paper clip trick
I hear all the time about using paper clips to bring up codes. What do you do? Thanks for any help you can give me.
Senior Member
Joined: Nov 2002
Posts: 998
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From: Long Island, New York
Car: 91RS
Engine: 305tbi
Transmission: 700R4
Turn the car off, take a paper clip, piece of wire, whatever you want and jump the 2 hole things in the upper right hand corner of the connector. Then turn the ignition to on but don't start the car. You get code 12 three times then any problem codes three times each. Do a search, there is even a diagram to show you what the upper right hand corner is 
Although I think ive heard of useing the upper and lower right connectors on some cars.
Although I think ive heard of useing the upper and lower right connectors on some cars.
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Joined: May 2003
Posts: 435
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From: Huntsville, Al
Car: ‘92 Z28
Engine: 350
Transmission: Auto
Axle/Gears: 3.23
Be careful, there are different positions for different years. I think 90-92 are different than the rest. I jump mine between #5 and #7, it's an '89.
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Joined: May 2003
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From: Huntsville, Al
Car: ‘92 Z28
Engine: 350
Transmission: Auto
Axle/Gears: 3.23
Mine has the 12 pin diagnostic connector. From right to left it is 1,2,3,4,5,6 on the top row and 7,8,9,10,11,12 on the bottom. Take the paper clip and stick one end in the #5 terminal and the other in the #7. Trun the key to on and wait for the grounded code '12'. It will be a flash, short pause, flash, flash. Then a long pause, 12, long pause, 12. Then it willstart flashing codes after that in the same pattern. When it is finished, it will flask '12' again. If you don't get the '12' code, it isn't hooked up right.
Supreme Member
Joined: Apr 2001
Posts: 4,969
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From: USA
Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
Huh. This is what it says on our home page, and in 2 other books I've read.
Just seems weird that your car is the only one that uses those pins.
DISPLAYING THE TROUBLE CODES
Run a wire/hairpin from Pin 6 to Pin 12 with the ignition off (although on later cars it should be from Pin 5 to Pin 6), then turning the ignition to the on position without starting the engine will flash the "Service Engine Soon" light in the following sequence: flash, pause, flash-flash, long pause flash, pause, flash-flash, long pause flash, pause, flash-flash, long pause Following this "12" code repeating three times will come any trouble codes stored, flashing each of them three times. If you do not see the "12" flash three times, your diagnostic circuit is defective.
Run a wire/hairpin from Pin 6 to Pin 12 with the ignition off (although on later cars it should be from Pin 5 to Pin 6), then turning the ignition to the on position without starting the engine will flash the "Service Engine Soon" light in the following sequence: flash, pause, flash-flash, long pause flash, pause, flash-flash, long pause flash, pause, flash-flash, long pause Following this "12" code repeating three times will come any trouble codes stored, flashing each of them three times. If you do not see the "12" flash three times, your diagnostic circuit is defective.
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
Interesting that he can get those codes by jumping pin "5" & "7" or pin "B" & "G" as they are labeled. Pin "B" is for the ECM signal and pin "G" is for the fuel pump signal. The proper pins to jumper is the pin "B" & "A", or if you want to number them. It would be pin "5" & "6" going left to right and top to bottom. Here is a schematic of the 89 RS LO3 ALDL.
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From: E.B.F. TN
Car: Tree Huggers
Engine: Do Not
Transmission: Appreciate Me.
3rd, I'd probably stop doing it that way. It is conceivable you are getting it to ground through the fuel pump, but were I you, I'd do it the right way. Name them anything you want, but stop doing it it half-assed.
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Joined: May 2003
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From: Huntsville, Al
Car: ‘92 Z28
Engine: 350
Transmission: Auto
Axle/Gears: 3.23
I don't think there is a half-assed way to do it really and I am not trying to be an assh0le or anything. But here it is. I tried the 6 and 12 terminal combo and they didn't work. There is nothing in the 8 terminal, so I can't jump there. That's when I was told to jump the 5&7 combo (from another web site) and it worked. If that isn't correct, ok. Here's a pic of my connector. Show me which ones to jump other than the 6&12, cause it doesn't work that way.
Thanks
Thanks
Senior Member
Joined: Nov 2002
Posts: 998
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From: Long Island, New York
Car: 91RS
Engine: 305tbi
Transmission: 700R4
91 RS 305tbi
These 2.
Edit: Sorry, your right, and now i'm confused, reading all this has made me forget which ones I used damnit, so ill let you guys figure it out.
These 2.
Edit: Sorry, your right, and now i'm confused, reading all this has made me forget which ones I used damnit, so ill let you guys figure it out.
Last edited by PyRo9862; Mar 14, 2004 at 04:33 PM.
Senior Member
Joined: Nov 2002
Posts: 998
Likes: 0
From: Long Island, New York
Car: 91RS
Engine: 305tbi
Transmission: 700R4
Yeah, ive sucessfully confused myself.
https://www.thirdgen.org/techbb2/sho...ighlight=paper
Vader has a nice diagram.
https://www.thirdgen.org/techbb2/sho...ighlight=paper
Vader has a nice diagram.
Member
Joined: May 2003
Posts: 435
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From: Huntsville, Al
Car: ‘92 Z28
Engine: 350
Transmission: Auto
Axle/Gears: 3.23
So, will 5 & 6 (A&B) do it correctly?? I don't want to do anything to the car that will fry the ECM or something. I want to do it the correct way. As I said, that way I described earlier in the post is what I was told to do. Let me know.
Thanks for the help.
Thanks for the help.
Supreme Member
Joined: Apr 2000
Posts: 3,187
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From: E.B.F. TN
Car: Tree Huggers
Engine: Do Not
Transmission: Appreciate Me.
Originally posted by 3rdgenstm
...I tried the 6 and 12 terminal combo and they didn't work. ...Here's a pic of my connector. Show me which ones to jump other than the 6&12, cause it doesn't work that way.
Thanks
...I tried the 6 and 12 terminal combo and they didn't work. ...Here's a pic of my connector. Show me which ones to jump other than the 6&12, cause it doesn't work that way.
Thanks
I'll steal from Vader:
The one marked ecm diagnostic request and the ecm ground. I just don't know what putting only 5 volts to your fuel pump will do to it over time.
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