I have the above van with a 5.0 liter engine, VIN 1GTFG25M811196309.  I'm trying to bleed the ABS unit after replacing all the brake lines.  Maxi Check Pro says it cannot read the information.  I don't understand as it read the OBII information prior to this.  The VIN number was entered into the scanner.  Why can't the scanner read the ABS info?

Thanks