OBD II Connector

Tiny
FRANMOSSO
  • MEMBER
  • 2006 CHEVROLET COBALT
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 97,000 MILES
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
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Tuesday, May 19th, 2009 AT 8:32 AM

8 Replies

Tiny
OBXAUTOMEDIC
  • EXPERT
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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Tuesday, May 19th, 2009 AT 8:49 AM
Tiny
FRANMOSSO
  • MEMBER
I checked every fuse under the hood and inside the car and all were good. A diagram would be awesome. Thanks
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Tuesday, May 19th, 2009 AT 9:14 AM
Tiny
OBXAUTOMEDIC
  • EXPERT
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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Wednesday, May 20th, 2009 AT 4:17 PM
Tiny
FRANMOSSO
  • MEMBER
Thank you very much for the info. It will help immensly.
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Thursday, May 21st, 2009 AT 4:04 AM
Tiny
FRANMOSSO
  • MEMBER
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?
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Thursday, June 4th, 2009 AT 5:56 AM
Tiny
OBXAUTOMEDIC
  • EXPERT
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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Friday, June 5th, 2009 AT 9:26 AM
Tiny
FRANMOSSO
  • MEMBER
Thanks, it was the PCM that was bad had to get a rebuild unit cost 156.00 all fixed up
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Friday, June 5th, 2009 AT 10:30 AM
Tiny
EL_ROY1985
  • MEMBER
Any chance I could get those schematics? Building a wire harness and I need to figure out how to wire in the DLC.
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Tuesday, September 23rd, 2014 AT 5:57 PM

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