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Where is the DLC plug - 1999 Oldsmobile Alero

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Usually under the steering wheel but it can also can be located under the glove box or in the center console

Posted on Sep 25, 2009


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Cen-Tech Mod.99722. I plugged it into 2001 Ford Ran. It would not work. I tried it in a 1996 Ford Ranger, it turned on immediately.Tried it again in the 2001 still would not turn on.

Is it a computer, plugged to the DLC? Runs off power from the DLC? If so check power to the DLC. Most power for the DLC comes from he cigarette /power point fuses.

Jan 20, 2017 | Ford Cars & Trucks

1 Answer

Pontiac grand prix 99 won't start no spark at the spark plugs no link on the scan tool when plug to the dlc what can be the problem

I hope my suggestions can help you ,first ,you can check the storage of battery and the engine ,if there is no power to use , second , check if the power is connected well .

Apr 20, 2013 | 1999 Pontiac Grand Prix GT

2 Answers

My obd2 isn't getting power what I do?

Check Pin #16 on the Data Link Connector (DLC) for battery voltage. (See Diagram)

If there is no battery voltage present check the fuse marked "OBD II" in the engine compartment fuse block. It is a 10 Amp fuse. If the fuse is good, repair the circuit between the fuse and pin #16 at the DLC.
If battery voltage is present at Pin 16 at the DLC, check for ground at pin 4 on the DLC. If ground is not present, repair the ground circuit between the DLC and Ground G202 located at the left side of the dash.
HINT: the easiest way to check BOTH of these at the same time is to use paper clips plugged into pin #16 and Pin #4 and connect a light bulb between the two. If the light illuminates brightly, power and ground are both OK.
If no problem with power or ground is detected at the DLC, check the Owner's Manual for your code reader.


May 11, 2012 | 2000 Kia Sephia

2 Answers


Below is a diagram of the DLC connector pins and what they do, check that pin 16 is always hot with 12 volts. If no voltage is present check the fuse for the cigar lighter or interior lights.2_11_2012_12_30_25_am.gif

Feb 10, 2012 | Cars & Trucks

2 Answers


the plug in a.k.a. data link connector(dlc) is located either behind the ashtray or underneath the ashtray. you can pull outward on the ashtray to acess the dlc. hope this helps.

Nov 28, 2010 | 1999 Acura CL

1 Answer

I need to find the obd connector plug

Data Link Connector The Data Link Connector (DLC) may be found in the following location:
  • Under the driver's side dashboard, near the steering column.
The DLC is rectangular in design and capable of allowing access to 16 terminals. The connector has keying features that allow easy connection. The test equipment and the DLC have a latching feature to ensure a good mated connection.

Oct 12, 2010 | 1993 Lincoln Mark VIII

1 Answer

Is a 1997 audi a4 obd2 diagnostic?

Yes, it is! The Data Link Connector (DLC) - car diagnostic plug is placed on back side between driver and passenger seats, on bottom back side of armrest under a plastic cover of ashtray. Under cover near back ashtray is a small plastic cover hidding DLC.

Please rate my response. Thanks !

Oct 09, 2010 | 1997 Audi A4

1 Answer

Hi.where is the diagmostics plug,on a audi a4 tdi please. gary.

The Data Link Connector (DLC) - car diagnostic plug is placed on back side between driver and passenger seats, on bottom back side of armrest under a plastic cover of ashtray. Under cover near back ashtray is a small plastic cover hidding DLC.

Please rate my response. Thanks !

Apr 29, 2010 | 2000 Audi A4

2 Answers

Where do i find the dlc plug

PLEASE DON'T FORGET TO RATE!!!! Data Link Connector OBD II Systems use a standardized test connector called the Data Link Connector (DLC). It is located beneath the instrument panel somewhere between the left end of the instrument panel and 12 inches (300 mm) past the vehicle centerline.
The DLC is located out of the sight of vehicle passengers, but should be easily viewable by a technician from a kneeling position outside the vehicle. The DLC is rectangular in design, capable of accommodating up to 16 terminals and has keying features to allow for easy connection. The DCL and Scan Tool connector have latching features that ensure the Scan Tool connector will remain mated when properly connected. Some common uses of the Scan Tool are:
  • To identify and clear any stored diagnostic trouble codes
  • To read the serial data stream information (e.g., PID data)
  • To perform Enhanced Diagnostic Tests (bi-directional Scan Tool)
Data Link Connector Graphic

Nov 01, 2009 | 2002 Oldsmobile Alero

1 Answer

2003 Chevy Tahoe DLC

it means your computer is bad, the main power must have defaulted.

You will have to rpelace the computer.

Nov 26, 2008 | 2003 Chevrolet Tahoe

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