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Problem with dlc not reading - 2005 Toyota ECHO

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- Check Voltage on pin 16 (BAT) and chassis (or body) ground. Always 12 Volts.
- Connect the Multimeter and check continuity between pin 4 (CG) and chassis ground. Less than 1 Ohms.
- Connect the Multimeter between pin 5 (SG) and chassis ground and check the continuity. Less than 1 Ohms.

problem with dlc not reading - 9152a69f-35fe-4a01-bc27-3a599d95ff3c.jpg

- Check the fuse named OBD2 in the lower finish panel, under the dash on passenger side.


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Posted on Feb 18, 2014

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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

Chevrolet blazer 1999 not commucating with computer


Hi Bigdave, I'm glad to help!

Most of the time when you can't read the computer its because there's no power OR no ground at the DLC connector where they plug their test equipment into. If you have a test light check for power and ground at the DLC Connector. If it doesn't have power then most likely you have a blown fuse. If it doesn't have ground then you'll need to trace where the ground comes from and repair it. NOTE: If you have both power and ground at the DLC connector then there's something wrong with the wiring going to the engine controller OR the controller itself. Hope this helps and have an awesome day Bigdave.

Apr 22, 2013 | 1999 Chevrolet Blazer

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

Can't get a code from dlc fuse's are good


Do you have 12 volts at the pin marked 16 on the DLC connector. If not hook up a battery source to it and bypass the system power.

Aug 28, 2012 | 2000 Cadillac DeVille

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.

0996b43f8021af68.jpg enlarge_icon.gifenlarge_tooltip.gif

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


0996b43f8021af67.jpg enlarge_icon.gifenlarge_tooltip.gif

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

2 Answers

Vsc light and traction control


When the VSC and trac light comes on, Your vehicle enter a fail safe function the ECU rejects any open request from the VSC system and your vehicle operate regardless of ABS,TRAC, and VSC. Having it cleared without corrections will allow the light to come on. If the VSC is seeing a large over steer the VSC and trac light comes on.(even if its under steer).If the ABS ,Trac is correct you will need to seek zero calibration.This is done through the DLC connection in the hood.The easy way to reinitial lize steering angle is done by keeping steering wheel in the straight ahead position (driver window down) disconnect the negative battery, and reconnect , turn key on . The other way is to go to the engine and find the DLC again driver window rolled down steering wheel in the straight ahead position. do not shake the vehicle you must be on a true level ground. No heavy load in the vehicle and no entering the vehicle untill this is complete Turn the key on at this point you will do everything through the window you cannot enter the vehicle.in the hood where the DLC is at you will short pin Ts and CG with a paper clip 4 times repeatedly within 8 seconds. There the VSC will go to zero point.Turn key off (again turn ignition off through the window) make sure you remove the shorting out of Ts and CG. Now your done. 10_13_2011_4_27_16_am.gifFor Rav4 use you DLC 3 its under the driver dash.As for the pin location its on the cover of the DLC 3

Oct 12, 2011 | 2004 Toyota RAV4

1 Answer

Check engine light and no power to DLC


Check the fuse that powers the DLC. It might be shared with the cig lighter or aux power sockets adn may have been blown.

Nov 20, 2009 | 2001 Chevrolet Blazer

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)
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Data Link Connector Graphic

Nov 01, 2009 | 2002 Oldsmobile Alero

1 Answer

Scaner won't power up when pluged into dlc


Fuse #5 10A Data Link Connector (DLC)
located in.

Passenger compartment fuse panel
The fuse panel is located on the left
hand side of the instrument panel
facing the driver’s side door. Pull the
panel cover outward to access the
fuses

Jun 02, 2009 | 1999 Mazda Pickup

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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