My OBD-II 16 pin connector under the dash on my 97 Saturn SC1 has been broken off. I am in need of a wiring diagram for that plug, because my check engine light just came on. I found a wiring diagram that has for example, CAN hi and CAN low, although I need to know wire colors not necessarily the names.

Question edited for a lot more clarity and toss in a LOAD of Caps
Question moved to model category.

Mazda Mpv LW5W OBD schematic from 17 pin to OBD2 16 ...

Mazda Forum https://www.mazdaforum.com > ... > Mazda MPV
Aug 7, 2015 - My Mpv has a 16 pin socket under the left side of the dash, kind of pointing down. The plug in you are looking at is for Mazda dealer ...

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SOLVED: Mazda mpv obd2 connector location

Fixya https://www.fixya.com > ... > MPV > 1998 Mazda MPV
Your ground wire connection for the OBD2 connector is located under the dash just below and to the right of the heater controls. More likely that you dont have ...
..

Power pin for OBD II is pin 16. Just supply it with unswitched 12v and you are done.

Check pin number 16 of the OBD2 connector under the dash, it should have 12 volts, if not check the fuse box diagrams for the source of the connectors B+ 12 volts.

Hi there,

If you've had your vehicle computer codes read and determined no issue with the VSC circuit, then you just need to cancel the warning light.

I've made up the following instructions, on how to clear VSC & TRAC Warning lights:

Zero Point Calibration of Yaw Rate and Deceleration Sensors Using Paper Clips (or jumper wires).

First, locate the 16-pin ODB II connector under the steering wheel (beneath the dash). The pins are numbered sequentially backwards from right to left (from the wide side of the connector looking at it from underneath).

Take two normal-sized paper clips (or suitable jumper wires). If using paper clips, straighten one edge of one of the paper clips. For the other, bend it open to a 90-degree angle (like an elbow).

Insert one paper clip/wire into pin # 14 (Ts), and the other paper clip/wire into pin # 4 (CG) of the OBD II connector - DO NOT allow the paper clips/wires to make contact at this point.
Refer to diagram below:

1. Ensure the shift lever is in "P" range.

2. Turn the ignition switch to "ON" (not start).

3. Momentarily touch the two paper clips/wires together (short) and separate again (open) - Repeat this process 5 times (within 8 seconds of turning ignition on).

Verify that the VSC indicator light is illuminated, indicating the Recorded Zero point is erased.

4. Turn the ignition switch "OFF".

5. Remove both paper clips/jumper wires from the OBD II connector.

6. Turn the ignition switch "ON" (not start) - wait until VSC warning light turns off (approx. 20 seconds), then wait 2 seconds.

7. Turn the ignition switch "OFF".

9. Re-insert paper clips/jumper wires to terminals #4 & #14 of the OBD II connector (as per above diagram).

10. Turn the ignition switch "ON" (not start) - VSC warning light should remain illuminated for 4 seconds, then start flashing at 0.13 second intervals.

12. After VSC warning light flashes for 2 seconds, turn the ignition switch "OFF".

13. Remove paper clips/jumper wires from the OBD II connector.

Drive your vehicle to confirm VSC & TRAC warning lights have been reset and no longer illuminate.



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On GM and Fords it's on the lower left hand corner of the dashboard, underneath the dash. You may have to look closer to find it.
There may be a plastic cap on it concealing it from view.

It should be there:

Diagnostic Link Connector Fig. 1: The OBD-II compliant Data Link Connector (DLC) is located under the driver's side of the instrument panel
Fig. 2: A Tech 1® , or equivalent scan tool must be used to retrieve codes from the 16-pin DLC connector
These vehicles are equipped with a Data Link Connector (DLC) which is the 16-pin connector that you attach the scan tool to read and/or clear Diagnostic Trouble Codes (DTCs). The DLC is located under the driver's side of the instrument panel.

Look under the dash near where the steering wheel is usually located (on the driver's side).

Was this vehicle marketed in the U.S.?
1996-97 MODELS NOTE: These models require the use of the Toyota's hand held scan tool or an equivalent OBD II compliant scan tool.

1. Prepare the scan tool according to the manufacturers instructions.
2. Connect the OBD II scan tool, to the DLC3 under the instrument panel. The DLC3 on the 1996-97 models is located on the drivers side under the dash
   NOTE: When the diagnosis system is switched from the normal mode to the check mode, it erases all Diagnostic Trouble Codes (DTC) and freeze frame data recorded. Before switching modes, always check the DTC and freeze frame data and write them down.
   
3. Turn the ignition switch to the ON and switch the OBD II scan tool switch on.
4. Use the OBD II scan tool to check the DTC and freeze frame data. Write them down.
5. Compare the codes found to the applicable diagnostic code chart. If necessary, refer to the individual component tests in this section. If the component tests are OK, test the wire harness and connectors for shorts, opens and poor connections.

uk model drivers side look under dash near accelerator pedal -white plug

Vin "7" or '9"???if #4 is firing so is #1. they both fire at the same time. have you swapped the wire with number 4 or another cylinder? have you checked for a injector pulse on #1 fuel injector? Compression on #1 Cylinder?

OBD II connector troubleshooting 101

I had the same problem with my 2000 Elantra. the OBD II connector pins get squished and won't make cantact with the scan tool, therefore no connection. the solution is to bend the pins back so they will connect to the scan tool.


FIRST! check your lighter and radio fuses (which you have already done). If possible, make sure your scan tool is working properly, try it on another car. If it is functioning properly, remove the 2 screws holding the obd II connector to the dash. Look for obvious signs of corrosion, damage, or stuff that shouln't be in the connector (rocks, gum, etc.) clean the connector with a good electronics cleaner (I use the CRC stuff), you can usually find it at you local parts store, radio shack, or even wal mart. hose down the inside of the connector thouroughly and allow time to dry.

check for voltage between 4 (gnd) & 16 (+vcc) then 5(gnd) and 16(+vcc) with the ignition on the voltage should be between 12v-16v (these pins may be different on other cars, look for an OBD II connector pinout diagram if your car is different). If this voltage is not present at either pin, the problem is not the connector. check your fuses and wiring. if this voltage is present at both pins continue.

Here's what I did. with the connector free from the dash, you can see the back of the connector where the wires enter the connector. on either side of the connector there may be a white clip. pop both of them off. you should be able to push a small screwdriver or pick in that space to pull the pins back out towards the outside of the connector. do one at a time so you can tell if the pin has moved back out into position. do this for all of the pins. Try to connect. if still no luck try again to push out the pins and reconnect.

If your connection is restored, replace the clips, screw it back into the dash. Return your car to the lousy DMV where they will proceed to tell you something else is wrong which they neglected to tell you on your first 10 visits!! :-)

Stuff thats good to know:
some auto parts stores will connect their OBD II scan tool to you car for free. auto zone is one place
some times the computer will need to reset to restore a connection to the scan tool. to do this simply cycle the ignition off (wait a few seconds) then on again.
online auction places are a excellent resource for USB to OBD II connectors to connect your laptop to your car. there is lots of OBD II diagnostic freeware out there to go with your newly purchased connector.

Good Luck

Chris
-CL Systems