moburki

Hey everybody! GF's "new" '04 CTT is displaying an array of lights. One that I haven't figured out yet is a right rear wheel speed sensor. Durametric told me there was no communication there. I thought easy peasy, just replace the sensor. Well, still implausible signal with RR wheel speed sensor. Checked for voltage at the plug, not getting a reading (I believe I should see 5V between pins). I'm wondering if anybody has a wiring diagram of the ABS module? I'd like to check for voltage at the pin outs on the module itself. I haven't even looked for the module (too many damn projects). I'm assuming it's integral with the ABS pump?
Any help is appreciated.

Edit: I'm not finding a Bentley repair manual for the Cayenne. Any repair manuals out there in e-land?