Data Link Connector, A/T: Description and Operation

DATA LINK K LINE
The Transmission Control Module's (TCM) communication with the ISAT scan tool is via pin 23.

The communication on data the link K line flows in both directions and thus constitutes both input and output signals.

The data link connector is situated under the facia on the driver's side.

With the ignition in drive position the voltage on pin 23 is 9-11 V when ISAT is connected.