OBD II Linking Error !!??

[woscarr]

Ok I just received one of these chepo scanners from china and it don't work on my 2002 Silhouette !? Bummer

The kicker, my work truck a 2012 Dodge Ram it works perfectly ! Scans in seconds and shows no codes message.

I checked the plug itself on the van wires and plug seem intact. It powers the scanner and the scanner scans but eventually gives a linking error.

The scanner... U480 OBD2 CAN-BUS Scanner Code For GM Ford Toyota Honda


Where to go from here. Wanted to find out what's causing my engine light to come on.


Just did some searching.. Tomorrow I will check pins 4,5 chassi/signal ground, pin 16 12v and where I think my problem might be pin 7 'Kwire" as I did install a after market stereo system.

Any ideas on how to get this 'kwire' working with a Dennon head !? Dose it go through a factory stereo ? If so possible to bypass from loop ??

Thanks
Wayne.

[danielsatur]

What year is the van?
Check the fuse to the DLC connector.

[Tech II]

What are the numbered blocks in the ALDL that have contacts?

#4 chassis ground

#5 signal ground

#16 bat

What other contacts do you have...

[woscarr]

Originally Posted by Tech II

What are the numbered blocks in the ALDL that have contacts?

#4 chassis ground

#5 signal ground

#16 bat

What other contacts do you have...

Ok I checked the obd2 connector in my 2002 Oldsmobile Silhouette..

#2 + 0.50v

#4 ground 0.0v

#5 ground 0.0v

#16 + 11.9v

All other pins are empty

[Tech II]

If you only have 4 contacts, and #2 is the fourth, that circuit is Class II serial data.....should not be 0.5 volts.....should be constantly varying between 12 and zero, when communicating, so this can vary between 3-6 volts.....have the vehicle scanned for "U" codes....

[DOUGLASNC]

My scanner wouldn't connect to a GM and read any code's.. Turned out that cigarette lighter fuse was blown.