Initial Inspection and Diagnostic Overview

Required Test Equipment

Any testing of the Heating and Air Conditioning System beyond the basics supplied here requires the use of the Jaguar Diagnostic System (JDS).

Jaguar has developed JDS in conjunction with a leading worldwide supplier of computerized diagnostic systems. In use, JDS does not interfere with, or change electronic functions during the diagnostic process, and it tests circuits and components under vehicle operating conditions.

JDS is a complete diagnostic system which will direct you through logical paths to the fault, and then identify the failed component. TO HAVE ACCURATE RESULTS, IT IS EXTREMELY IMPORTANT THAT YOU FOLLOW JDS INSTRUCTION EXACTLY.