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Dearborn adapter woes

Suprman

Well-known member
Supporting Vendor
6,861
697
113
Location
Stratford/Connecticut
I havent messed with it yet. I use a dearborn ive had for years. I used to use an old cat et clone that worked fine it just fell apart one day. If you have a c7 truck and can’t connect you have to select canbus in the settings.
 

Ronmar

Well-known member
3,881
7,549
113
Location
Port angeles wa
What COM port is the USB to serial adapter set to? Does it show up properly in windows device manager?
Yep, you should be able to see it come and go in device manager when you plug it in and unplug it, and what com port it is calling itself, so you can select that com port in the app if necessary.
 

Wingnut13

Well-known member
235
563
93
Location
Strafford, NH
That was the plan for this old laptop. Just to live in the truck and diagnose issues.

COM port 3, yes I can see it in the device manager.

I’ll have some time tomorrow or Sunday to mess around with it some more.
 

Canadianz

Member
34
74
18
Location
Ontario, Canada
I have had similar issues with getting a laptop to talk to an ecu using a USB-serial adapter, and in that case what solved it was this:
On your laptop go to control panel, then devices, then select the usb to serial adapter and look at the info that is displayed. It will often tell you what the chipset is that it uses, and you can search the net for drivers for that specific chip. Manually install them, and see if that fixes it. It did for me.
 

spankybear

Well-known member
897
924
93
Location
WA
USB to serial adapters are notoriously difficult to make work for some applications expecting a hardware serial port.. Best to use a laptop with a built in serial port.
Yes and don't use no name ones... Tripp Lite Keyspan one is the only one I have used somewhat reliable...
 
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