Obd1 code scan process
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Joined: Feb 2021
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From: Iowa
Obd1 code scan process
I need to check the codes on my 91 F350. The link in the tech info is not working, can someone shoot me a link to a working description of the whole process. I know the basics but I don’t have a manual to make sure I follow all the steps.
thanks all
thanks all
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Do you have a code reader?
Without a code reader, insert a jumper wire (paperclip) between the Self Test-In and Sig RTN pins on the EEC TEST connector found under the hood behind the air filter box.
Then turn the key to run and count the flashes on the check engine light. You can cycle the key as many times as necessary to get the correct count.
Without a code reader, insert a jumper wire (paperclip) between the Self Test-In and Sig RTN pins on the EEC TEST connector found under the hood behind the air filter box.
Then turn the key to run and count the flashes on the check engine light. You can cycle the key as many times as necessary to get the correct count.
Lead Driver
Joined: Jan 2019
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From: N.W. Alabama
Fuel Injection Technical Library » How To Run a Self-Test
yours will be 2 digit codes-->Fuel Injection Technical Library » 2 Digit Self-test Codes 11-32
yours will be 2 digit codes-->Fuel Injection Technical Library » 2 Digit Self-test Codes 11-32
More Turbo
Joined: May 2014
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Also make sure motor is warmed up. And ALL accessories are off, lights, radio, heater.
Also pay attention to the codes. You will only get 3 digit codes.
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
The code reader that takes all the guess work out of it doesn't cost very much... INNOVA 3145: Ford Code Reader For most 1982-95 Ford/Lincoln/Mercury Vehicles | JEGS
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