04 ODB protocol?

Anyone know which protocol for the ODB is used on the 04 Ava's?

CAN, VPW, etc?

Did a seach, didn't come up with anything

VPW

The data link connector (DLC) allows a scan tool to communicate with the class 2 serial data line. The serial data line is the means by which the microprocessor-controlled modules in the vehicle communicate with each other. Once the scan tool is connected to the class 2 serial data line through the DLC, the scan tool can be used to monitor each module for diagnostic purposes and to check for diagnostic trouble codes (DTCs). Class 2 serial data is transmitted on a single wire at an average of 10.4 kbps. This value is an average, class 2 uses a variable pulse width modulation to carry data and depending on the message it may operate faster or slower. The bus will float at a nominal 7.0 volts during normal operation. Each module can pull this lower during the transmission. The bus is not at battery positive voltage or ground potential during normal operation. When the ignition switch is in RUN, each module communicating on the class 2 serial data line sends a state of health (SOH) message every 2 seconds to ensure that the module is operating properly. When a module stops communicating on the class 2 serial data line, for example if the module loses power or ground, the SOH message it normally sends on the data line every 2 seconds disappears. Other modules on the class 2 serial data line, which expect to receive that SOH message, detect its absence; those modules in turn set an internal DTC associated with the loss of SOH of the non-communicating module. The DTC is unique to the module which is not communicating, for example, when the inflatable restraint sensing and diagnostic module (SDM) SOH message disappears, several modules set DTC U1088. Note that a loss of serial data DTC does not normally represent a failure of the module that set it.

Hmmmm,  I could have swore the Av was using the CAN_BUS......

I picked up the Scanguage the other day, and I was attempting to get the Xguages to work. I thought it was CAN as well for some reason, but I made sure last night that it was VPW, and added the VPW specific codes, and it works like a charm now.

This is at least for the 04, but I am sure that at least the (02?) 03-06 would be the same.

Thanks for the help!

Hmmm, this ole dog just learned a new trick.... 

03's and up did get a redesigned electrical system (I thought it was to the CAN system).  So there is a good chance this info does not apply to the '02's (heck, the early '02s had a throttle cable).