J1962

[Shannen Durphey]

Alexander Wenning wrote:

>

<snip>

> What do you know about OBDII-codes?
> Does anybody out there know where to get the right codes from?
>
> > I understand that having J1962  pin 7 and no pin 2 or pin 10 implies
> > ISO-9141-2 and that no pin 7 but a pin2 implies SAE J1850.
>
> Regards
>
> Alex Wenning
> wenning.motorsport at t-online.de

 Got the somewhat helpful gm training manual for OBDII right here.  Codes
consist of a letter and 4 digit #.

Letters are:
P = Powertrain
C = Chassis
B = Body
U= Network(??).

First digit:
0=Generic code (SAE)
1= manufacturer specific.

Next digit:
1=fuel and air metering
2=fuel and air metering(injector circuit malfunctions only)
3= ignition system or misfire
4= auxillary emission controls
5= vehicle speed and idle speed control systems
6=computer output circuit
7=trans
8=trans

last two digits indicate portion of system which is faulty.

Then there are type A, B, and C codes.

More later if anyone's interested.

Shannen