Retrieving Codes

Before beginning any testing, retrieve any existing Diagnostic Trouble Codes (DTCs) from DDM. See ON-DEMAND SELF-TEST in MODULE COMMUNICATIONS NETWORK article. Make any repairs that may be indicated. If symptoms remain, or if no DTCs exist, see the KEYLESS ENTRY SYSTEM SYMPTOM-TO-PINPOINT TEST MENU table below, then go to the appropriate PINPOINT TEST. If any DTC begins with letter "U", refer to the MODULE COMMUNICATIONS NETWORK article.