V1 No power to obd2 port

[Jerryc74]

Check all my fuses and relays and they're all good. I need the port to work so i can relearn the crank sensor Everything else works that i know of. Im not very good with electrical so if anyone can help me I'd appreciate it!

 

[Gtstorey]

Need more info.
Donor?
What do you mean by doesn't work? Your device doesn't power up or doesn't communicate?

 

[Jerryc74]

Need more info.
Donor?
What do you mean by doesn't work? Your device doesn't power up or doesn't communicate?

Been working fine until I hooked up a fuel/air mixture gauge. No power at all.

 

[Jerryc74]

Been working fine until I hooked up a fuel/air mixture gauge. No power at all.

I've checked fuses and relays with all of them being good

 

[Jerryc74]

Need more info.
Donor?
What do you mean by doesn't work? Your device doesn't power up or doesn't communicate?

The 2 grounds seem to be working properly. The obd2 port is the original

 

[RCK605]

If you remove the AFR gauge does the OBD2 start working again?

 

[Jerryc74]

If you remove the AFR gauge does the OBD2 start working again?

No....I tried that

 

[Gtstorey]

Still would be helpful to know your donor.
I've previously posted the late model dlc/obd connector info here. OBD2 Power | DF Kit Car Forum
The grounds and power are probably the same for the older models but I haven't confirmed.

 

[Rauq]

Mod your signature here.

 

[Jerryc74]

Still would be helpful to know your donor.
I've previously posted the late model dlc/obd connector info here. OBD2 Power | DF Kit Car Forum
The grounds and power are probably the same for the older models but I haven't confirmed.

2006 cobalt ss 2.0 SC

 

[Gtstorey]

Ross has posted a link for the wiring diagrams for that model if you dig enough to find it. I would start with checking grounds and power as I posted and see what you get. If you don't get those grounds and power you can dig to confirm the correct pins.

 

[Jerryc74]

Ross has posted a link for the wiring diagrams for that model if you dig enough to find it. I would start with checking grounds and power as I posted and see what you get. If you don't get those grounds and power you can dig to confirm the correct pins.

I'm not good at this electrical stuff at all but i'll give it a shot....thanks for your help I really appreciate it.

 

[Ross]

Here are some test to run on your OBDII port.
GM calls the OBDII port the DLC, which stands for Data Link Connector.
Pin 16 of the OBDII port gets power from the Lighter fuse in the engine fuse box.