No Module Communication

Check for: faulty circuitry, faulty PATS module. See ON-DEMAND SELF-TEST in appropriate MODULE COMMUNICATIONS NETWORK article and retrieve Diagnostic Trouble Codes (DTCs). See the following list.

• Mustang, see: MODULE COMMUNICATIONS NETWORK
• Sable and Taurus, see: MODULE COMMUNICATIONS NETWORK

If no codes are present, go to PINPOINT TEST "A"  .