Test G: Invalid Format Key Code From Ignition Key Transponder

NOTE: Large metallic objects on the same key ring with PATS ignition key may cause vehicle starting problems and record DTCs under certain conditions. If a fault cannot be identified, examine key ring for such objects. If objects are found that could interfere with PATS operation, turn ignition switch to LOCK position and restart engine with all metallic objects held away from ignition key.

Connect New Generation Star (NGS) tester or equivalent scan tool to Data Link Connector (DLC). Perform instrument cluster continuous and on-demand self-test. If DTC B1602 is retrieved, go to next step. If DTC B1602 is not retrieved, system is okay.
Turn ignition switch to LOCK position. Check that all ignition keys are Ford approved. Cut a NEW encoded ignition key. Turn ignition switch to RUN position. Program NEW encoded ignition key. See ERASE ALL KEYS & PROGRAM 2 KEYS . Perform instrument cluster on-demand self-test. If DTC B1602 is retrieved, go to next step. If DTC B1602 is not retrieved, system is okay. If customer has any remaining encoded ignition keys, program encoded ignition key(s). See KEY PROGRAMMING USING 2 PROGRAMMED KEYS .
Turn ignition switch to LOCK position. Replace PATS transceiver module. See PATS TRANSCEIVER MODULE under REMOVAL & INSTALLATION. Turn ignition to RUN position and perform instrument cluster on-demand self-test. If any DTCs are retrieved, perform appropriate test. See INSTRUMENT CLUSTER DTC INDEX table under SELF-DIAGNOSTIC SYSTEM. If no DTCs are retrieved, system is okay.