OBD II Connector

2006 CHEVROLET COBALT
97,000 MILES • 4 CYL • 2WD • AUTOMATIC
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FRANMOSSO
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iI have a check engine light on and i hooked up my scanner to read the error code. The problem is the scanner does not power up so i checked between pins 16 (+V) and pin 4 (GND) and got no voltage reading on the vehicle connector. I tried the scanner in another vehicle and it works. Does anyone know where the voltage originates from?
Thanks
May 19, 2009 at 8:32 AM
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OBXAUTOMEDIC
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Hello,

Check your fuses. Here is a guide to help and the fuse location in the diagrams below.

https://www.2carpros.com/articles/how-to-check-a-car-fuse


Check out the diagrams (Below). Please let us know what you find.

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May 19, 2009 at 8:49 AM
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FRANMOSSO
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I checked every fuse under the hood and inside the car and all were good. A diagram would be awesome. Thanks
May 19, 2009 at 9:14 AM
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OBXAUTOMEDIC
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Here is the Schematic for the DLC... I will also email it to you for easier reading. I cannot find the Fuse Block Diagram for Fuse Locations....


https://www.2carpros.com/forum/automotive_pictures/188069_06Cobaltls22LDLCSchem_1.jpg


https://www.2carpros.com/forum/automotive_pictures/188069_06Cobaltls22LDLCSchem1_1.jpg

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May 20, 2009 at 4:17 PM
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FRANMOSSO
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Thank you very much for the info. It will help immensly.
May 21, 2009 at 4:04 AM
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FRANMOSSO
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OK, i found the fuse that powers the scanner and replced it. Now when i hook up the scanner, it trie to link with the car but keeps comming up with link failure. Any ideas?
Jun 4, 2009 at 5:56 AM
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OBXAUTOMEDIC
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[quote:a70799cda2="franmosso"]OK, i found the fuse that powers the scanner and replced it. Now when i hook up the scanner, it trie to link with the car but keeps comming up with link failure. Any ideas?[/quote:a70799cda2]


With ignition off test for an open between the DLC terminal 2 and the terminal on the PCM harness connector that contains the class 2 serial data circuit.

post results....


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Jun 5, 2009 at 9:26 AM
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FRANMOSSO
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Thanks, it was the PCM that was bad had to get a rebuild unit cost 156.00 all fixed up
Jun 5, 2009 at 10:30 AM
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EL_ROY1985
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Any chance I could get those schematics? Building a wire harness and I need to figure out how to wire in the DLC.
Sep 23, 2014 at 5:57 PM