2003 FORD MUSTANG door lock

PINPOINT TEST B: ALL DOOR LOCKS ARE INOPERATIVE z
Measure the reistance between the GEM C201b pin 4, circuit
397 (BK/WH), harness side and ground.
z Is the reistance less than 5 ohms? GO to
A3 .
No
REPAIR the circuit(s) in
question. TEST the system
for normal operation. A3 CHECK CIRCUIT 397 (BK/WH) FOR SHORT TO POWER
z
Measure the voltage between the GEM C201b pin 4, circuit
397 (BK/WH), harness side and ground.
z Is any voltage present? Yes
REPAIR the circuit. TEST
the system for normal
operation.
No
REFER to
Section 418 - 00 .
Test Step Result / Action to
Take B1 CHECK POWER LOCK INPUTS TO THE GEM
z
Connect the diagnostic tool.
z Monitor the GEM PIDS DR_LOCK, DR_UNLK, PD_LOCK,
PD_UNLK, while depressing the driver and passenger power door
lock and unlock switches.
z Do the PID values agree with the switch positions? Yes
GO to
B11 .
No
GO to B2 .
B2 ISOLATE BETWEEN THE DRIVER AND PASSENGER POWER
DOOR LOCK SWITCHES NOTE:
This PID may not be supported in 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 Connect the diagnostic tool.
z Monitor the GEM PIDS DR_LOCK and DR_UNLK, while
depressing the driver power door lock and unlock switches.
z Do the PID values agree with the switch positions? Yes
GO to
B7 .
No
GO to B3 .
B3 CHECK CIRCUIT 326 (WH/VT) FOR VOLTAGE —
DRIVER SIDE z
Disconnect: Master Window/Door Lock Control Switch C508.
z Measure the voltage between master window/door lock control
switch C508 Pin 3, Circuit 326 (WH/VT), harness side and ground. Yes
GO to
B4 .
No Klj . 7 ba
212003 Mustang Workshop Manual
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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 master window/door lock control switch component
test. REFER to Wiring Diagrams Cell 149, Component Testing.
z Is the master window/door lock control switch OK? Yes
GO to
B5 .
No
INSTALL a new
master window/door
lock control switch.
REPEAT the self-
test. CLEAR the
DTCs. B5 CHECK CIRCUITS 129 (LG) AND 1014 (VT) FOR SHORT TO
POWER z
Key in OFF position.
z Disconnect: GEM C201c.
z Measure the voltage between GEM C201c Pin 20, Circuit 129 (LG),
harness side and ground; and between GEM C201c Pin 18, Circuit
1014 (VT), harness side and ground.
z Key in ON position.
z Measure the voltage between GEM C201c Pin 20, Circuit 129 (LG),
harness side and ground; and between GEM C201c Pin 18, Circuit
1014 (VT), harness side and ground.
z Key in OFF position.
z Are the voltages greater than 10 volts? Yes
REPAIR the circuit in
question. REPEAT
the self-
test. CLEAR
the DTCs.
No
GO to B6 . Klj . 8 ba
212003 Mustang Workshop Manual
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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 129 (LG), harness side; and between master
window/door lock control switch C508 Pin 2, Circuit 1014 (VT),
harness side and GEM C201c 2 Pin 18, Circuit 129 (LG), harness
side.
z Are the resistances less than 5 ohms? Yes
INSTALL a new
GEM. For additional
information, REFER
to
Section 419 - 10 .
REPEAT the self-
test. CLEAR the
DTCs.
No
REPAIR the circuit in
question. REPEAT
the self- test. CLEAR
the DTCs. B7 CHECK CIRCUIT 326 (WH/VT) FOR VOLTAGE —
PASSENGER
SIDE z
Disconnect: Passenger Window/Door Lock Control Switch C629.
z Measure the voltage between passenger/window door lock control
switch C629 Pin 3, Circuit 326 (WH/VT), harness side and ground.
z Is the voltage greater than 10 volts? Yes
GO to
B8 .
No
REPAIR Circuit 326
(WH/VT). REPEAT
the self- test. CLEAR
the DTCs. B8 CHECK THE PASSENGER POWER DOOR LOCK SWITCH FOR
CORRECT OPERATION z
Carry out the passenger window/door lock control switch
component test. REFER to Wiring Diagrams Cell 149, Component
Testing.
z Is the master window/door lock control switch OK? Yes
GO to
B9 .
No
INSTALL a new
master window/door
lock control switch.
REPEAT the self-
test. CLEAR the
DTCs. B9 CHECK CIRCUITS 119 (PK/YE) AND 120 (PK/LG) FOR SHORT TO
POWER z
Disconnect: GEM C201c.
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. Yes
REPAIR the circuit in
question. REPEAT
the self-
test. CLEAR
the DTCs.
No
GO to B10 . Klj . 9 ba
212003 Mustang Workshop Manual
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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 Key in OFF position.
z Are the voltages greater than 10 volts? B10 CHECK CIRCUITS 119 (PK/YE) AND 120 (PK/LG) FOR OPEN
z
Measure the resistance between passenger window/door lock
control switch C629 Pin 2, Circuit 119 (PK/YE), harness side and
GEM C201c Pin 19, Circuit 119 (PK/YE), harness side; and
between passenger window/door lock control switch C629 Pin 4,
Circuit 120 (PK/LG), harness side and GEM C201c Pin 17, Circuit
120 (PK/LG), harness side.
z Are the resistances less than 5 ohms? Yes
INSTALL a new
GEM. For additional
information, REFER
to
Section 419 - 10 .
REPEAT the self-
test. CLEAR the
DTCs.
No
REPAIR the circuit in
question. REPEAT
the self- test. CLEAR
the DTCs. B11 CHECK GEM CONTROL OF THE POWER DOOR LOCKS
z
Connect the diagnostic tool.
z Trigger the GEM active command LOCK, UNLOCK, DD UNLOCK,
and DD LOCK ON and OFF.
z Do the doors lock and unlock? Yes
INSTALL a new
GEM. For additional
information, REFER
to
Section 419 - 10 .
REPEAT the self-
test. CLEAR the
DTCs.
No
GO to B12 . Klj . 10 ba
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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 unlock? Yes
GO to
B17 .
No
GO to B13 .
B13 CHECK THE DRIVER POWER LOCK ACTUATOR OPERATION
z
Disconnect: Driver Door Lock Actuator C525.
z Momentarily connect a fused (40A) jumper wire between battery
and driver door lock actuator Pin 1, component side; and connect a
jumper wire between ground and driver door lock actuator Pin 2,
component side.
z Reverse the jumper wire connections and momentarily connect.
z Did the driver door lock and unlock? Yes
GO to
B14 .
No
INSTALL a new
driver door lock
actuator. For
additional
information, REFER
to Actuator .
REPEAT the self-
test. CLEAR the
DTCs. B14 CHECK CIRCUIT 193 (YE/LG) FOR OPEN
NOTE:
Verify voltage at BJB Fuse POWER WINDOWS (40A)
before completing this step.
z Disconnect: GEM C201b.
z Measure the voltage between GEM C201b Pin 3, Circuit 193
(YE/LG), harness side and ground.
z Is the voltage greater than 10 volts? Yes
GO to
B15 .
No
REPAIR Circuit 193
(YE/LG). REPEAT
the self- test. CLEAR
the DTCs. B15 CHECK CIRCUIT 1205 (BK) FOR OPEN
z
Measure the resistance between GEM C201b Pin 1, Circuit 1205 Yes
GO to
B16 . Klj . 11 ba
212003 Mustang Workshop Manual
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(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 OPEN
z
Disconnect: GEM C201c.
z Measure the resistance between driver door lock actuator C525 Pin
2, Circuit 1015 (RD/WH), harness side and GEM C201c Pin 9,
Circuit 1015 (RD/WH), harness side; and between driver door lock
actuator C525 Pin 1, Circuit 163 (RD/OG), harness side, and GEM
C201c Pin 7, Circuit 163 (RD/OG), harness side.
z Are the resistances less than 5 ohms? Yes
INSTALL a new
GEM. For additional
information, REFER
to
Section 419 - 10 .
REPEAT the self-
test. CLEAR the
DTCs.
No
REPAIR the circuit in
question. REPEAT
the self- test. CLEAR
the DTCs. B17 CHECK THE PASSENGER POWER LOCK ACTUATOR
OPERATION z
Disconnect: Passenger Door Lock Actuator C603.
z Momentarily connect a fused (40A) jumper wire between battery
and passenger door lock actuator Pin 1, component side; and
connect a jumper wire between ground and passenger door lock
actuator Pin 2, component side.
z Reverse the jumper wire connections and momentarily connect. Yes
GO to
B18 .
No
INSTALL a new
passenger door lock
actuator. REFER to
Actuator . REPEAT
the self- test. CLEAR
the DTCs. Klj . 12 ba
212003 Mustang Workshop Manual
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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 OPEN z
Disconnect: GEM C201c.
z Measure the resistance between passenger door lock actuator
C603 Pin 2, Circuit 1015 (RD/WH), harness side and GEM C201c
Pin 10, Circuit 117 (PK/BK), harness side; and between passenger
door lock actuator C603 Pin 1, Circuit 163 (RD/OG), harness side,
and GEM C201c Pin 8, Circuit 118 (PK/OG), harness side.
z Are the resistances less than 5 ohms? Yes
INSTALL a new
GEM. For additional
information, REFER
to
Section 419 - 10 .
REPEAT the self-
test. CLEAR the
DTCs.
No
REPAIR the circuit in
question. REPEAT
the self- test. CLEAR
the DTCs. Test Step Result / Action to Take
C1 CHECK THE LOCK OPERATION USING
THE DRIVER DOOR LOCK SWITCH z
Lock and unlock the doors using the
driver door lock switch.
z Do all the doors lock and unlock
correctly? Yes
GO to
C2 .
No
GO to Pinpoint Test B .
C2 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.
z Do the PID values agree with the
ignition switch positions? Yes
GO to
C3 .
No
For key- in-ignition concerns, REFER to
Section 413 - 09 .
C3 CHECK THE GEM FUNCTION TEST
TIC/DATA NOTE:
This PID may not be supported in Yes Klj . 13 ba
212003 Mustang Workshop Manual
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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
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