Test H: Passive Anti-Theft System Received Invalid Key-Code Format From Transponder

NOTE: Large metallic objects, a second Passive Anti-Theft System (PATS) ignition key, or devices such as electronic credit cards on the same key ring may cause vehicle starting problem and possibly set this code. Ensure customer's encoded ignition key is an approved Ford encoded ignition key. Encoded keys from Rotunda, Ilco, Curtis and Strattec are also approved keys.

Turn ignition switch to LOCK position. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below driver's side of instrument panel, to right of steering column. Turn ignition switch to RUN position. Using NGS tester, perform instrument cluster self-test. If DTC B1602 is retrieved, go to next step. If DTC B1602 is not retrieved, system is okay at this time. Check all customer encoded ignition keys with instrument cluster self-test to verify all other keys are programmed.
Turn ignition switch to LOCK position. Obtain a NEW encoded ignition key. Using new encoded ignition key, turn ignition switch to RUN position. Program new encoded ignition key. Perform KEY PROGRAMMING - ERASE ALL KEYS & PROGRAM 2 KEYS under PROGRAMMING. Using NGS tester, perform instrument cluster self-test. If DTC B1602 is retrieved, go to next step. If no DTCs are retrieved, system is okay at this time. If any DTCs other than B1602 are retrieved, perform appropriate test. See INSTRUMENT CLUSTER DIAGNOSTIC TROUBLE CODE INDEX table under SELF-DIAGNOSTIC SYSTEM.
Ensure ignition switch is in LOCK position. Replace transceiver module. See REMOVAL & INSTALLATION . Turn ignition switch to RUN position. Using NGS tester, perform instrument cluster self-test. If no DTCs are retrieved, system is okay at this time. If any DTCs are retrieved, perform appropriate test. See INSTRUMENT CLUSTER DIAGNOSTIC TROUBLE CODE INDEX table under SELF-DIAGNOSTIC SYSTEM.