2003 FORD MUSTANG lock

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Page 3574 of 4378

FORD MUSTANG 2003  Workshop Manual GENERAL PROCEDURES 
Key Programming —
Program a Key Using Two 
Programmed Keys 
NOTE:  This procedure only works if two or more programmed ignition keys are available and it is 
desired to program a

Page 3576 of 4378

FORD MUSTANG 2003  Workshop Manual GENERAL PROCEDURES 
Key Programming —
Enable/Disable Spare Key 
Programming 
NOTE:  The spare key programming switch is a diagnostic tool programmable switch that provides the 
capability to enable/

Page 3578 of 4378

FORD MUSTANG 2003  Workshop Manual GENERAL PROCEDURES 
Key Programming —
Additional Key With One Programmed 
Key 
NOTE:  This procedure is used when a customer needs to have an additional key programmed into the 
vehicle without eras

Page 3582 of 4378

FORD MUSTANG 2003  Workshop Manual REMOVAL AND INSTALLATION 
Module —
Passive Anti- Theft Transceiver 
Removal 
1.  CAUTION: Electronic modules are sensitive to electrical charges. If exposed to 
these charges, damage may result. 
Di

Page 3588 of 4378

FORD MUSTANG 2003  Workshop Manual DIAGNOSIS AND TESTING 
Multifunction Electronic Module 
For warning chime concerns, refer to 
Section 413 - 09  . 
For courtesy lamps/illuminated entry and battery saver concerns, refer to  Section 41

Page 3589 of 4378

FORD MUSTANG 2003  Workshop Manual REMOVAL AND INSTALLATION 
Module —
Generic Electronic (GEM) 
Removal 
1.  CAUTION: Electronic modules are sensitive to static electrical charges. If exposed 
to these charges, damage may result. 
Di

Page 3665 of 4378

FORD MUSTANG 2003  Workshop Manual �z
seat control switch (14C715) 
�z front seat backrest pad adjusting pump (65530) 
�z front seat adjusting motor drive tube (618B62) 
�z system wiring and circuit protection 
�z front seat backrest a

Page 3716 of 4378

FORD MUSTANG 2003  Workshop Manual Short to Battery 
B1317  Battery Voltage High  GEM  GO to 
Section 414 - 00  . 
B1318  Battery Voltage Low  GEM  GO to 
Section 414 - 00  . 
B1322  Door Ajar Driver Circuit Short 
to Ground  GEM  GO t