4th Gen OBD2 Pinout Diagram

[Montego Murph]

Hi all,

I'm doing a little snooping on the Zero Point Calibration process.
From what I've learned, 2003-2004 uses pin 14, and 2005+ uses pin 12.

Is there a place I can download or view OBD2 pinout diagrams year by year to accomplish the following throughout the 4th Gen:

• Learn if Pin 12 is vacant when 14 is used, and vice versa
• Determine what can go wrong if you use the wrong pin (like if you use Pin 14 on your 2007)
• Are these bits of info the same for the Lexus GX470?

Thanks everyone
Murph

 

[Areese]

Pinout diagram doesn't match

I am currently doing a radio install on my 03 v6 with jbl. The instructions are telling me to connect theses 2 wires to pins 14 and 6 in the obd port. 6 is blank. All pinout diagrams say that 6 is not vacant. Instead there's a pin taken up around 15 or 16 that's normally blank. I'm at a loss. I can't find a pinout diagram that matches an 03 or 04 because I guess from what I've read that it all changed to the current diagram on 05.

 

[Montego Murph]

Does the manual for the system you are installing indicate the function of those wires and their pinout code? If we were able to dig up a schematic we could verify it that way.

 

[blackoutt]

Both pins are populated in 05+

There are no adverse effects of using the wrong pin other than ZPC doesn't happen (I've done it many a time)

I know ZPC is "the same" on GX470 but cannot confirm date of change from pin 14 to 12.

 

[04Limitedmj]

Did you ever determine the locations for the paper clips? I have an 04.

 

[Montego Murph]

Since you have an 2004, you could go either way.
Even though this sheet says 2003, i've seen 2004's using the old configuration.

Compare your VIN to this chart. That should help determine which side of the fence you're on.

PM me if you're interested in learning about something called the Zero Hero that makes this whole process much easier.

 

[JtotheRed]

Hi all,

I'm doing a little snooping on the Zero Point Calibration process.
From what I've learned, 2003-2004 uses pin 14, and 2005+ uses pin 12.

Is there a place I can download or view OBD2 pinout diagrams year by year to accomplish the following throughout the 4th Gen:

• Learn if Pin 12 is vacant when 14 is used, and vice versa
• Determine what can go wrong if you use the wrong pin (like if you use Pin 14 on your 2007)
• Are these bits of info the same for the Lexus GX470?

Thanks everyone
Murph

Did you ever find a pin diagram? I'm having an impossible time locating one for 2004 models (July '04 manufacturing date)