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Dlc loose - Sienna Toyota Cars & Trucks

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  • rkheltzel Aug 07, 2010

    what is an dlc that emissions said was loose

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What do you mean it is loose?
Are there 2 screws holding it to the dash?
is the plug itself loose when you attach the reader?

Thanks!!
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Posted on Aug 07, 2010

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If you are stating that when trying to pull a trouble code this is the message you get,Apply some dielectric grease at the connector before retesting.

Posted on Aug 07, 2010

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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

How do i reteive codes 2006 pontiac g6 no communication from dlc is there a hidden fuse?


Sigh...there can be alot involved in NO COMM faults. Do the instrument warning lamps come on with the key as normal? Do they all go to self test modes when turning to start? Most GM products either have a dedicated fuse for DLC or use the Radio fuse. If you have a meter or a testlight, pin 16 (Looking at the DLC, top side is the wider of the 2 sides, bottom.narrow side furthest right is pin 16) will be the 12v power port. If you can test for power there, and you dont have it, you have a broken wire or a blown fuse or a bad connection most likely, or possible ignition switch issue.
If you DO have power (Minimum 10.5v to be sure it will connect), then it becomes more involved. You need to start checking grounds as well (DLC Pins 4 and 5. Top left is pin 1, count to the right) and then checking modules directly for power and ground or checking comm lines at the can buss connector. This really requires a system diagram for all modules connected on the comm buss, and a wiring diagram to know which wires you will be testing, plus its worlds easier if you have an enhanced scantool capable of talking to all modules on the vehicle. If no modukes can communicate, then you can backtrack from your DLC till you find where there is no signal, but that could take awhile. However if some communicate and others do not (Your car probably has 15 modules that can comm) then it can really speed up the process because you will then know where the fault ISNT, and can narrow down the search for locations.
Having seen a few GM systems get upset with water intrusion, or individual modules pulling down the buss, you could try disconnecting the ABS module connector and rechecking comm. I have seen loose plugs on that, as well as burned out ABS modules cause NO COMM. I only start there because its usually easy to unplug and test the ABS.
Aside from that, you really will need test equipment and accurate diagrams to properly proceed. But with any luck, the power and ground testing may get you going. Id start there if it were at my shop, and proceed to scan tests and buss wiring checks next.

Jan 31, 2015 | 2006 Pontiac G6

1 Answer

DLC was disconected how to fix


Hi Mildred, I'm glad to help!
Mildred, if the DLC Connector was taken apart and you have power and ground to the connector. Then most likely some of the wires are in the wrong place. Here's how to fix it: CALL Subaru and see if they will print you a DLC Connector wiring schematic. Then carefully follow the schematic to see if any of the wires are out od place. If they are simply put them in the correct place. Hope this helps and have an awesome day Mildred.

Mar 29, 2014 | 2002 Subaru Outback

1 Answer

1995 kia sportage ex dlc bad connection issue


check and see if your lighter is working on some vehicles that fuse is what powers the dlc

Feb 21, 2013 | 1995 Kia Sportage

1 Answer

98 oldsmobile 88 royale code 12 and 41 what could be the problem


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GM Bonneville/Eighty Eight/LeSabre 1986-1999
Reading Codes

Print


1987-97 VEHICLES EXCEPT 1997 MODELS WITH 16-PIN DLC

See Figures 1 and 2
Listings of the trouble for the various engine control system covered in this manual are located in this section. Remember that a code only points to the faulty circuit, NOT necessarily to a faulty component. Loose, damaged or corroded connections may contribute to a fault code on a circuit when the sensor or component is operating properly. Be sure that the components are faulty before replacing them, especially the expensive ones.


0996b43f8021af66.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: ALDL/DLC terminal identification for 1987-97 vehicles, except 1997 models with a 16-pin DLC
The Assembly Line Diagnostic Link (ALDL) or Data Link Connector (DLC) may be located under the dashboard, and is sometimes covered with a plastic cover labeled DIAGNOSTIC CONNECTOR.

  1. The diagnostic trouble codes can be read by grounding test terminal B . The terminal is most easily grounded by connecting it to terminal A (internal ECM ground). This is the terminal to the right of terminal B on the top row of the ALDL connector.
  2. Once the terminals have been connected, the ignition switch must be moved to the ON position with the engine not running.
  3. The Service Engine Soon or Check Engine light should be flashing. If it isn't, turn the ignition switch OFF and remove the jumper wire. Turn the ignition ON and confirm that the light is now on. If it is not, replace the bulb and try again. If the bulb still will not light, or if it does not flash with the test terminal grounded, the system should be diagnosed by an experienced driveability technician. If the light is OK, proceed as follows.
  4. The code(s) stored in memory may be read through counting the flashes of the dashboard warning lamp. The dash warning lamp should begin to flash Code 12. The code will display as one flash, a pause and two flashes. Code 12 is not a fault code. It is used as a system acknowledgment or handshake code; its presence indicates that the ECM can communicate as requested. Code 12 is used to begin every diagnostic sequence. Some vehicles also use Code 12 after all diagnostic codes have been sent.
  5. After Code 12 has been transmitted 3 times, the fault codes, if any, will each be transmitted 3 times. The codes are stored and transmitted in numeric order from lowest to highest.

The order of codes in the memory does not indicate the order of occurrence.
  1. If there are no codes stored, but a driveability or emissions problem is evident, the system should be diagnosed by an experienced driveability technician.
  2. If one or more codes are stored, record them. Refer to the applicable Diagnostic Code chart in this section.
  3. Switch the ignition OFF when finished with code retrieval or scan tool readings.

After making repairs, clear the trouble codes and operate the vehicle to see if it will reset, indicating further problems.

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Fig. Fig. 2: Engine diagnostic trouble codes - 1987-93 vehicles, and 1994 vehicles with a 12-pin DLC connector


197 VEHICLES WITH 16-PIN DLC AND ALL 1995-99 MODELS

See Figures 3 through 7


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Fig. Fig. 3: DLC terminal identification for 1994 vehicles with a 16-pin DLC, as well as all 1995-99 models
On 1994-95 3.4L and 3.8L engines, and all 1996 models, an OBD-II compliant scan tool must be used to retrieve the trouble codes. Follow the scan tool manufacturer's instructions on how to connect the scan tool to the vehicle and how to retrieve the codes.


0996b43f8021af69.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 4: Engine diagnostic trouble codes (1 of 4) - 1994 vehicles with a 16-pin DLC and all 1995-99 vehicles


0996b43f8021af6a.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 5: Engine diagnostic trouble codes (2 of 4) - 1994 vehicles with a 16-pin DLC and all 1995-99 vehicles


0996b43f8021af6b.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 6: Engine diagnostic trouble codes (3 of 4) - 1994 vehicles with a 16-pin DLC and all 1995-99 vehicles


0996b43f8021af6c.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 7: Engine diagnostic trouble codes (4 of 4) - 1994 vehicles with a 16-pin DLC and all 1995-99 vehicles

May 04, 2012 | 1988 Oldsmobile Delta 88

1 Answer

Warning lights on dashboard


Had a similar problem on older BMW. The ABS/ASC sensor in the wheel hub is apperntly prone to this if something has been changed like brake, shocks etc or got some dirt in it. The amber light could indicate a loose wire connection on the brake system or perhaps a damaged elec cable. can only be reset with diagnostic computer or special tool.

Aug 14, 2009 | 2001 BMW 330

1 Answer

I need to know where diagnostic connection is on a 1994 ford lincoln


With the advent of OBD-II, the Federal Government has mandated the location of the DLC (Data Link Connector) .The Data Link Connector is located in the passenger compartment. It is attached to the instrument panel and accessible from the driver's seat. 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. The Scan tool uses the DLC as a pathway to communicate with the on board computer system. If the DLC is not located under the dash, the vehicle is using OBD-I. This is a slightly different management system in its operation and diagnosis. Look for DLC under the hood near the left front headlight on the Town Car and Mark VII, near the right side firewall on the Continental.

May 07, 2009 | Ford Lincoln Continental Cars & Trucks

1 Answer

Unable to locate dlc module


The DLC (data link connector) on a 95 Grand Cherokee is under the hood on the right side near the firewall.

Apr 26, 2009 | Jeep Grand Cherokee Cars & Trucks

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