2003 FORD MUSTANG Workshop Manual

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Page 3849 of 4378

FORD MUSTANG 2003 Workshop Manual �z
Is the voltage greater than 10 volts? REPAIR Circuit 326
(WH/VT). REPEAT
the self-
test. CLEAR
the DTCs. B4 CHECK THE DRIVER POWER DOOR LOCK SWITCH FOR
CORRECT OPERATION �z
Carry out the mas

Page 3850 of 4378

FORD MUSTANG 2003 Workshop Manual B6 CHECK CIRCUITS 129 (LG) AND 1014 (VT) FOR OPEN
�z
Measure the resistance between master window/door lock control
switch C508 Pin 4, Circuit 129 (LG), harness side and GEM C201c
Pin 20, Circuit 1

Page 3851 of 4378

FORD MUSTANG 2003 Workshop Manual �z
Key in ON position.
�z Measure the voltage between GEM C201c Pin 19, Circuit 119
(PK/YE), harness side and ground; and between GEM C201c Pin
17, Circuit 120 (PK/LG), harness side and ground.
�z

Page 3852 of 4378

FORD MUSTANG 2003 Workshop Manual B12 ISOLATE BETWEEN DRIVER AND PASSENGER POWER LOCK
ACTUATORS �z
Connect the diagnostic tool.
�z Trigger the GEM active command LOCK and DD UNLOCK ON and
OFF.
�z Did the driver door lock and unlo

Page 3853 of 4378

FORD MUSTANG 2003 Workshop Manual (BK), harness side and ground.
�z Is the resistance less than 5 ohms? No
REPAIR Circuit 1205
(BK). REPEAT the
self-
test. CLEAR the
DTCs. B16 CHECK CIRCUITS 163 (PK/YE) AND 1015 (RD/WH) FOR OPE

Page 3854 of 4378

FORD MUSTANG 2003 Workshop Manual PINPOINT TEST C: THE DOORS DO NOT LOCK/UNLOCK USING
THE REMOTE TRANSMITTER �z
Did the passenger door lock and unlock? B18 CHECK CIRCUITS 163 (RD/OG), 1015 (RD/WH), 117 (PK/BK),
AND 118 (PK/OG) FOR

Page 3855 of 4378

FORD MUSTANG 2003 Workshop Manual PINPOINT TEST D: THE LUGGAGE COMPARTMENT DOOR IS
INOPERATIVE USING THE REMOTE TRANSMITTER the normal scan tool PID list. It can be
located in the Function Test —
"
Transmitter Tic/DATA". When thi

PINPOINT TEST D: THE LUGGAGE COMPARTMENT DOOR IS
INOPERATIVE USING THE REMOTE TRANSMITTER the normal scan tool PID list. It can be
located in the Function Test —
"
Transmitter Tic/DATA". When this test is
activated, the appropriate results may be
obtained when pressing the keyfob
buttons.
z Remove the ignition key from the ignition.
z Connect the diagnostic tool.
z Monitor the GEM FUNCTION TEST
TIC/DATA while pressing the lock and
unlock buttons on the remote transmitter.
z Does LAST DATA RECEIVED match
the button presses of the remote
transmitter? INSTALL a new GEM. For additional
information, REFER to
Section 419 - 10 .
REPEAT the self- test. CLEAR the DTCs.
No
GO to C4 .
C4 CHECK THE BATTERIES IN THE
REMOTE TRANSMITTER z
Install new batteries in the remote
transmitter.
z Connect the diagnostic tool.
z Monitor the GEM FUNCTION TEST
TIC/DATA while pressing the lock and
unlock buttons on the remote transmitter.
z Does LAST DATA RECEIVED match
the button presses of the remote
transmitter? Yes
SYSTEM is OK. REPEAT the self-test.
CLEAR the DTCs.
No
GO to
C5 .
C5 REPROGRAM THE REMOTE
TRANSMITTERS TO THE GEM z
NOTE: When carrying out the following
procedure it must be noted that all
previous programmed remote transmitters
will be erased. The customer needs to be
informed that any remote transmitters not
present during the programming mode will
not operate the vehicle. All remote
transmitters must be programmed at the
same time.
z Reprogram the remote transmitter to the
GEM. For additional information, refer to
Programming — Keyless Entry Remote
Transmitter .
z Connect the diagnostic tool.
z Monitor the GEM FUNCTION TEST
TIC/DATA while pressing the lock and
unlock buttons on the remote transmitter.
z Does LAST DATA RECEIVED match
the button presses of the remote
transmitter? Yes
SYSTEM is OK. REPEAT the self-test.
CLEAR the DTCs.
No
PROGRAM a new remote transmitter to the
vehicle. For additional information, REFER to
Programming
— Keyless Entry Remote
Transmitter . REPEAT the self-
test. CLEAR
the DTCs. If the problem still remains,
INSTALL a new GEM and program the remote
transmitters to the vehicle. For additional
information, REFER to Section 419 - 10 .
REPEAT the self- test. CLEAR the DTCs. Test Step Result / Action to Take
D1 CHECK IGNITION STATES
z
Connect the diagnostic tool.
z Monitor the GEM PIDS IGN_KEY, IGN_A, IGN_S, and
IGN_R while cycling the ignition switch through the OFF,
ACC, RUN, START and key out positions. Yes
GO to
D2 .
No Klj . 14 ba
212003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

Page 3856 of 4378

FORD MUSTANG 2003 Workshop Manual �z
Do the PID values agree with the ignition switch
positions? REFER to
Section 413 - 09 for
key- in-ignition warning chime
concerns. D2 CHECK THE GEM PID LAST DATA RECEIVED FOR
LUGGAGE COMPAR

z
Do the PID values agree with the ignition switch
positions? REFER to
Section 413 - 09 for
key- in-ignition warning chime
concerns. D2 CHECK THE GEM PID LAST DATA RECEIVED FOR
LUGGAGE COMPARTMENT z
Remove the ignition key from the ignition.
z Connect the diagnostic tool.
z Monitor the GEM PID LAST DATA RECEIVED while
pressing and releasing the luggage compartment, panic,
lock, and unlock buttons of the remote transmitter.
z Does LAST DATA RECEIVED match the button
presses of the remote transmitter? Yes
GO to
D5 .
No
GO to D3 .
D3 CHECK THE BATTERIES IN THE REMOTE
TRANSMITTER z
Install new batteries in the remote transmitter.
z Connect the diagnostic tool.
z Monitor the GEM FUNCTION TEST TIC/DATA while
pressing the luggage compartment button on the remote
transmitter.
z Does LAST DATA RECEIVED match the button
presses of the remote transmitter? Yes
SYSTEM is OK. REPEAT the
self-
test. CLEAR the DTCs.
No
GO to D4 .
D4 REPROGRAM THE REMOTE TRANSMITTERS TO THE
GEM z
NOTE: When carrying out the following procedure, it
must be noted that all previous programmed remote
transmitters will be erased. The customer needs to be
informed that any remote transmitters not present during
the programming mode will not operate the vehicle. All
remote transmitters must be programmed at the same
time.
z Reprogram the remote transmitter to the GEM. For
additional information, refer to Programming — Keyless
Entry Remote Transmitter .
z Connect the diagnostic tool.
z Monitor the GEM FUNCTION TEST TIC/DATA while
pressing the lock and unlock buttons on the remote
transmitter.
z Does LAST DATA RECEIVED match the button
presses of the remote transmitter? Yes
SYSTEM is OK. REPEAT the
self-
test. CLEAR the DTCs.
No
PROGRAM a new remote
transmitter to the vehicle. For
additional information, REFER
to Programming — Keyless
Entry Remote Transmitter .
REPEAT the self- test. CLEAR
the DTCs. If the problem still
remains, INSTALL a new GEM
and program the remote
transmitters to the vehicle. For
additional information, REFER
to Section 419 - 10 . REPEAT
the self- test. CLEAR the
DTCs. D5 CHECK THE GEM OUTPUT TO THE LUGGAGE
COMPARTMENT z
Trigger the GEM active command RELEASE to ON and
OFF.
z Did the luggage compartment release? Yes
INSTALL a new GEM. For
additional information, REFER
to
Section 419 - 10 . REPEAT
the self- test. CLEAR the
DTCs.
No
GO to D6 .
D6 CHECK CIRCUIT 931 (OG) FOR OPEN
z
Disconnect: Luggage Compartment Lid Release Relay.
z Measure the voltage between luggage compartment lid
release relay Pin 2, Circuit 931 (OG), harness side and
ground; and between luggage compartment lid release Yes
GO to
D7 .
No Klj . 15 ba
212003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

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