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Need help with obd2 port

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Old Feb 5, 2018 | 09:38 PM
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Alvaro Villarreal's Avatar
Alvaro Villarreal
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Question Need help with obd2 port
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I’m having trouble finding the problem my truck won’t communicate with a snap on obd scanner.when I connect any scanner it will prompt me to place key in on position witch it already is. Checked all pinouts for obd port all of them seem to get good continuity and good voltage haven’t checked pcm to see if the obd2 port is fried truck will start and do everything right but no communication.some help please to how I could find out if pcm obd side is fried.my truck is a Ford F-250 2000 7.3 4by4 automatic extended cab. Already made sure lighter fuse is good.
 
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Old Feb 5, 2018 | 09:55 PM
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Plug in anything to the port for accesories. If it's dead. Blown fuse. Thinkin

Denny
 
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Old Feb 5, 2018 | 09:58 PM
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Our trucks are not completely obd2 compliant. Many scanners will not work or communicate with our trucks. Do you use Apple or Android products?
 
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Old Feb 5, 2018 | 10:04 PM
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I used a snap on scanner worked on other 7.3 but not mine and lighter fuse is fine getting 12.3 volts on pin 16 so I know there is power going towards te port .
 
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Old Feb 6, 2018 | 06:13 AM
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Does the scanner have a setting for communication protocol?
 
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Old Feb 6, 2018 | 06:20 AM
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Which Scanner and Software Version?
 
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Old Feb 6, 2018 | 06:33 AM
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Originally Posted by Alvaro Villarreal
I used a snap on scanner worked on other 7.3 but not mine...
That can be interpreted more than one way. Is this the exact same Snap On tool that worked on the other 7.3?
 
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Old Feb 6, 2018 | 07:59 AM
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Same Snap-On and same operator? Maybe it's something like Jay mentioned, a setting on the Snap-On tool. I think the connection is J1850 something, but I can't remember exactly off hand...
 
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Old Feb 6, 2018 | 08:51 AM
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Yes same snap on and same operarator and no there is no software communication protocol setting and it’s used same day on other 7.3 trucks to make sure it’s the truck and not scanner that’s bad
 
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Old Feb 6, 2018 | 08:59 AM
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Have you had the pcm connector loose recently. is it fully connected
 
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Old Feb 6, 2018 | 09:10 AM
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Fully connected removed pcm last week to see if it smelled like burned but no I also cleaned the connectors.
 
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Old Feb 6, 2018 | 10:06 AM
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The truck starts and runs? I don't have my truck today, I'm pretty sure there's a fuse or relay...have you looked in the manual?
 
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Old Feb 6, 2018 | 10:59 AM
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Yes truck starts runs everything fine just won’t communicate with pcm all fuses are fine .
 
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Old Feb 7, 2018 | 01:56 AM
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Does the door chime work when the door is open, truck is off and the key is in the ignition?
 
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Old Feb 7, 2018 | 02:27 AM
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Here is some general info and the troubleshooting matrix. From the '01 book, but it is same for '00





 
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