does anyone have or know where to get a wiring diagram for the ABS system.I have changed the sensor in the rear diff andthe vehicle speed sensor in the trans and I am still getting codes for the rear wheel sensor.Also how can i check the plugs with a multimeter,does anyone know what they should read?Thanks John

 

Here ya go.

 

thank you.any idea what it should read on a multimeter at the connectors?

 

You should get a pulsing DC signal between pins 9 and 21 when the back wheels are turning. A couple of jack stands and put it in gear perhaps?