2000 LeSabre- no power to diagnostic port

[capt. apathy]

the title pretty much covers it. DEQ says the port has no power so it can't pass emission test. apparently the scanner acts as if it isn't even hooked to a car.

[LeSabre97mint]

Originally Posted by capt. apathy

the title pretty much covers it. DEQ says the port has no power so it can't pass emission test. apparently the scanner acts as if it isn't even hooked to a car.

Capt.

I don't know why you don't have power at yourdiagnostic port...but here is a layout of the port I found on the interne. It's at this site: http://obddiagnostics.com/DataSheet.pdf


Regards

Dan

[stuzman]

Originally Posted by capt. apathy

the title pretty much covers it. DEQ says the port has no power so it can't pass emission test. apparently the scanner acts as if it isn't even hooked to a car.

Pin 16 of your diagnostic connector has B+ (battery voltage) and pin 4 and 5 are your grounds. Get a voltmeter and check to see if you have voltage there. If not, then check the 10A ALDL fuse located under the back seat, driver side.

If you have the voltage, then you have a Class 2 communication problem. You probably have a body or chassis module pulling down the line where each module would have to be disconnected to isolate the faulty module.

[capt. apathy]

Originally Posted by stuzman

Pin 16 of your diagnostic connector has B+ (battery voltage) and pin 4 and 5 are your grounds. Get a voltmeter and check to see if you have voltage there. If not, then check the 10A ALDL fuse located under the back seat, driver side.

If you have the voltage, then you have a Class 2 communication problem. You probably have a body or chassis module pulling down the line where each module would have to be disconnected to isolate the faulty module.

thanks that fixed it.

someone had removed the fuse.

thanks

[stuzman]

Originally Posted by capt. apathy

thanks that fixed it.

someone had removed the fuse.

thanks

No problem...glad to help!

[LeSabre97mint]

Originally Posted by capt. apathy

thanks that fixed it.

someone had removed the fuse.

thanks

Capt.

Here is the 1000.00 question....Why would someone remove that fuse? ?? Did other items come on when you replaced the fuse?

Regards

Dan