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Pin 16 0f dlc showing no voltage need wiring diagram

Cant connect to obd2 no communication with truck pin 16 no voltage present when key is on

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  • Cars & Trucks Master
  • 12,423 Answers

What make , model an year ?

Posted on May 08, 2017

Testimonial: "2001 ford f150 xlt 5.4L"

  • Jeff Armer May 09, 2017

    Fuse #3 20amp , location - central junction box .Inside the vehicle fuse box .

  • Jeff Armer May 09, 2017

    here is web site for free wiring diagrams .http://www.bbbind.com/free_tsb.html

    enter vehicle info year , make , model an engine size. Then under system click on Body & accessories . Then click on computer data lines in subsystem . Click the search button , then the blue link .

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I need help with a 2001 ford f150 xlt data link pinout pin 16 showing no power i check the fuse are ok but cigarette lighter works i need a wiring diagram.


https://www.google.com/search?client=aff-maxthon-maxthon4&channel=t27&q=2001%20Ford%20F150%20XLT%20Wiring%20diagram

May 09, 2017 | Ford Cars & Trucks

2 Answers

My OBD will not power up on a 2005 pontiac montana.


SP205 is a splice pack , taped to the wiring harness behide the dash near the OBD connector .

My OBD will not power up ? Code reader , scan tool ????? .Pin #16 at the OBD connector should have B+ voltage .This is what supply's B+ voltage to the scan tool / code reader . What makes you think you need a computer ? The computer doesn't supply B+ voltage to that OBD port ,.Do you know where the i/p fuse box is ? You want the CIGAR/DLC /APO FRT fuse 20amp . The other wires you mention above , don't mess with those . Those are the class 2 data bus wires .Screw with those and short one out , you will never get your vehicle started . Suggets you google GM class 2 serial data bus communications .

Jan 25, 2017 | 2005 Pontiac Montana SV6

1 Answer

I have a 2000 ford ranger that wont read the code scanner when pluged in. All fuses check good and all valtages and grounds test good at the obd2 jack. Help


Does the code reader power up ? Is there battery voltage at pin #16 in the DLC ? Does no communication show on code reader ? Are any of the pins bent ? Post a pic !

Sep 13, 2016 | 2000 Ford Ranger SuperCab

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

Communication error with OBD2 and DLC on camry 2010 model


Check the voltage in pin 16 of DLC 3. Hook a bulb type 12 v tester between terminal 16 of the dlc and ground. The bulb should glow even if the ignition key is off. If the bulb does not glow check the fuse located under the glove box on the passenger side.

Oct 29, 2013 | 2010 Toyota Camry SE

1 Answer

97 buick century has no data from OBD2 scanner.


The protocol is class 2 . Maybe your code reader is no good .
012 GM Class II Communications

Data Link Connector (DLC)
The data link connector (DLC) contains the following serial data links:
• Class II
• Entertainment and Comfort (E&C)
The DLC also provides a power source for the scan tool as follows:
• Unswitched voltage (B+) at DLC terminal 16 (circuit 1450)
• Ground at terminal 4 (circuit 1450) and terminal 5 (circuit 1550)

Class II Serial Data Link
The class II serial data link allows the following modules to communicate data with each other:
• Body control module (BCM)
• Electronic brake traction control module (EBTCM)
• Heater-A/C control (if equipped with RPO CJ2)
• Instrument panel cluster (IPC)
• Powertrain control module (PCM)
• Inflatable Restraint Sensing and Diagnostic Module (SDM).
The Class II serial data link allows a Scan Tool scan tool to communicate with the above modules for diagnostic and testing purposes. The Class II serial data link is located at the DLC connector terminal 2. Terminal 2 consists of the following circuits:
• Circuit 1036
• Circuit 1037
• Circuit 1128
• Circuit 1049
• Circuit 1122
• Circuit 1132
Entertainment and Comfort (E&C) Serial Data Link
The entertainment and comfort (E&C) serial data link allows a scan tool to communicate with the radio or the mobile telephone handset the remote CD player (if equipped). This communication is for diagnostic and testing purposes. The E&C serial data link is located at the DLC connector terminal 14, circuit 835.
PIN #9 goes to the air bag module .

Aug 04, 2017 | 1997 Buick Century

2 Answers

New OBD2 port


first are the wires there i dont expect a person the rip out an obd port and all its wires --second why after 11 years are you putting one in --buy a chilton / hanyes repair manual in the back has the wiring diagrams

Jun 21, 2017 | 2000 Chevrolet Astro

1 Answer

Need dlc wiring diagram


Ok first off if you can wire a multi pin plug to go to your vehicles pcm you should be more than capable to figure this out. How did you determine the other 14 pins? Why is your obd port not There? If it was removed , why? If you have a multi meter use that, if you don't have one or know how to use it I think you should stop now because you can damage the pcm to your vehicle. Just static electricity to the components can damage them beyond repair.
Are you hard wiring right to the pcm or is the connector still there? If so and you are doing this just line up the new leads to the corresponding pin. Use the same connector.

Nov 03, 2017 | 2000 Chevrolet Astro

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.

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May 11, 2012 | 2000 Kia Sephia

1 Answer

2000 Cavalier DLC wiring.


Check the CIG fuse it goes directly to pin 16. It also powers the cigarette lighter. That fuse should be in the I/P fuse box.

Jul 26, 2009 | 1997 Chevrolet Cavalier

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