reset FORD MUSTANG 2003 Owner's Manual

as detected by the door ajar circuit. For vehicles equipped with the remote keyless entry feature, any
signal the GEM detects when a valid remote transmitter button is depressed will reset both the
demand and courtesy lamp battery saver timers. This battery saver relay then restores power to both
the demand and courtesy lamp circuits.
Base Courtesy and Extended Lighting
The base courtesy lighting feature provides interior lighting for the convenience of the vehicle's
occupants. The courtesy lamps consist of the map/dome lamps for the coupe and the map lamps for
the convertible. All lamps designated as courtesy lamps will be illuminated whenever the GEM detects
that the driver or passenger doors become ajar, by means of the driver or passenger door ajar circuits.
The courtesy lamps will also be illuminated when the GEM detects that the dome lamp switch has
been activated, by means of the dome lamp switch circuit.
The extended courtesy lighting feature provides temporary extended illumination of the courtesy lamps
after the customer has entered the vehicle. The courtesy lamps will remain illuminated for 25 seconds
after the GEM detects that the driver and passenger doors are closed, as detected by the door ajar
circuits. The extended courtesy lighting feature will be terminated after the 25 second time-
out period,
or if the GEM detects that the ignition switch has been moved from the OFF position to either the RUN,
ACC, or START positions.
Demand Lighting
The GEM does not provide any special features to the demand lighting group with the exception of
providing a power source when the battery saver feature is active. The demand lighting group consists
of the luggage compartment lamp, the driver and passenger vanity mirror lamps, and the map lamps.
Illuminated Entry with Remote Keyless Entry
The illuminated entry with remote keyless entry feature, provides power to the courtesy lamps when
the remote transmitter is used. When the GEM detects that the ignition switch is in the OFF or key out
positions, and it detects that a valid remote transmitter unlock button has been depressed, power to
the courtesy lamps will be enabled. The courtesy lamp circuit will remain powered until one of the
following occurs:
zThe GEM detects that the ignition switch has been moved from the OFF, to the RUN, START,
or ACC position.
z The GEM detects any valid remote transmitter lock button is depressed.
z The courtesy lamp circuit has been powered for 25 seconds.
If the GEM detects any valid remote transmitter unlock button has been depressed, and the ignition
switch is in the OFF or key out position during the 25 second time- out, the courtesy lamp circuits will
remain powered for an additional 25 seconds.
Inspection and Verification
1. The interior lighting system is a generic electronic module (GEM) controlled system.
2. Verify the customer concern by operating the interior lighting system.
3. Visually inspect for the following obvious signs of mechanical and electrical damage. Klj . 2 ba
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PINPOINT TEST J: THE ANTI-
THEFT SYSTEM DOES NOT OPERATE
CORRECTLY — PCM ID DOES NOT MATCH BETWEEN
INSTRUMENT CLUSTER AND PCM PINPOINT TEST K: THE ANTI - THEFT SYSTEM DOES NOT OPERATE If other DTCs are retrieved,
REFER to Instrument Cluster
Diagnostic Trouble Code (DTC)
Index.
Test Step Result / Action to Take
J1 USE THE DTCS FROM THE
INSTRUMENT CLUSTER SELF
TESTS z
Use the recorded results
from the Instrument
Cluster Continuous and
On- Demand Self- Tests.
z Is DTC B2139 recorded? Yes
GO to
J2 .
No
System is OK. J2 CLEAR PCM ID FROM
INSTRUMENT CLUSTER AND
PCM z
Carry out the security
access procedure for the
instrument cluster. For
additional information,
refer to Security Access —
Procedure .
z NOTE: DO NOT carry out
ignition key code erase.
z Select FSF card
PARAMETER RESET
command for instrument
cluster.
z Use diagnostic card for
PCM Active Command
Keep Alive Memory
Reset.
z Key in OFF position.
z Select FSF card
PARAMETER RESET
command for PCM.
z Key in ON position.
z Turn the ignition switch to
RUN for three seconds.
z Enter the following
diagnostic mode on the
diagnostic tool: Clear
Continuous DTCs.
z Key in OFF position.
z Enter the following
diagnostic mode on the
diagnostic tool: Retrieve
Continuous DTCs.
z Is DTC B2139 retrieved? Yes
VERIFY PCM calibration is correct for the vehicle. If correct,
REPEAT Step J2. If fault code persists, INSTALL a new
instrument cluster; for additional information, REFER to
Section 413
- 01 . CYCLE the ignition to RUN using two
encoded ignition keys. REPEAT Pinpoint Test J . CLEAR the
DTCs. TEST the system for normal operation. If DTC B2139
still exists, INSTALL a new PCM; for additional information,
REFER to Section 303 - 14 . REPEAT the self-
test. CLEAR the
DTCs.
No
System is OK. CHECK for any other DTCs. REFER to the
instrument cluster Diagnostic Trouble Code Index. Klj . 16 ba
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CORRECTLY —
NVM CONFIGURATION FAILURE (NO PCM ID
EXCHANGED BETWEEN INSTRUMENT CLUSTER AND PCM) Test Step Result / Action to Take
K1 USE THE DTCS FROM
THE INSTRUMENT CLUSTER
SELF TESTS z
Use the recorded results
from the Instrument
Cluster Continuous and
On- Demand Self- Tests.
z Are any DTCs
recorded? Yes
If DTC B2141 only is retrieved, GO to
K2 .
If DTC U1147 is retrieved with DTC B2141, GO to Pinpoint Test C .
No
System is OK. K2 CARRY OUT KEEP ALIVE
MEMORY RESET FROM PCM z
Use diagnostic card for
PCM Active Command —
Keep Alive Memory
Reset.
z Key in OFF position.
z Key in ON position.
z Leave the key in the run
position for thirty
seconds.
z Key in OFF position.
z Start the vehicle.
z Does the vehicle start? Yes
System is OK.
No
GO to
K3 .
K3 RETRIEVE THE
INSTRUMENT CLUSTER
DTCS z
Enter the following
diagnostic mode on the
diagnostic tool: Clear
Continuous DTCs.
z Key in OFF position.
z Key in ON position.
z Key in OFF position.
z Enter the following
diagnostic mode on the
diagnostic tool:
Instrument Cluster On-
Demand Self- Test.
z Is DTC B2141 retrieved? Yes
REPEAT K2. If the fault persists, verify the PCM calibration. If
the calibration is OK, INSTALL a new instrument cluster. for
additional information, REFER to
Section 413 - 01 . Cycle the
ignition key to run using two encoded ignition keys. GO to
Pinpoint Test J to initialize the module. REPEAT the self-
test.
CLEAR the DTCs.
No
REFER to the DTC index. Klj . 17 ba
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GENERAL PROCEDURES
Security Access —
Procedure
NOTE: The security access procedure is utilized to obtain passive anti- theft system (PATS) security
access. PATS security access must be granted to erase ignition keys, enable/disable the spare key
programming switch or perform parameter resets for the instrument cluster. The security access
procedure invokes an inherent 10 minute time delay prior to granting security access during which
diagnostic tool must remain connected to the vehicle. Once security access has been granted, a
security access command menu is displayed that offers various command options (refer to PATS
Configuration Command Index).
NOTE: Select only the commands required by the appropriate pinpoint test.
1. From diagnostic tool: Using the Ford Service Function (FSF) card, select the appropriate instrument cluster. Enter SECURITY ACCESS PROCEDURE. This procedure will take 10
minutes to perform, during which the ignition switch must be in RUN and the diagnostic tool
must be connected to the vehicle.
2. After the 10- minute security access procedure has been completed, a new menu will be
displayed with command options. Select only those functions required before exiting out of this
menu. Once exited out of this menu, the security access procedure must be performed again to
perform additional commands.
SECTION 419-
01: Anti-Theft — PATS 2003 Mustang Workshop Manual Special Tool(s)
Worldwide
418-
F224,
New Generation STAR (NGS)
Tester
418- F052, or equivalent
diagnostic tool Klj . 1 ba
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