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 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
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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
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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
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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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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
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relay Pin 5 Circuit 931 (OG), harness side and ground
z Is the voltage greater than 10 volts? REPAIR Circuit 931 (OG).
REPEAT the self-
test. CLEAR
the DTCs. D7 BYPASS THE GEM AND RELAY CONTROL
z
Momentarily connect a 25A jumper wire between the
luggage compartment lid release relay Pin 3 and Pin 5.
z Did the luggage compartment lid release? Yes
GO to
D8 .
No
GO to D12 .
D8 CHECK LUGGAGE COMPARTMENT LID RELEASE
RELAY z
Carry out the luggage compartment lid release relay.
REFER to Wiring Diagrams Cell 149, Component
Testing.
z Is the luggage compartment lid release relay OK? Yes
GO to
D9 .
No
INSTALL a new luggage
compartment lid release relay.
REPEAT the self- test. CLEAR
the DTCs. D9 CHECK CIRCUIT 599 (PK/LG) FOR SHORT TO POWER
z
Disconnect: GEM C201c.
z Measure the voltage between GEM C201c Pin 25, Circuit
599 (PK/LG), harness side and ground.
z Is the voltage greater than 10 volts? Yes
REPAIR Circuit 599 (PK/LG).
REPEAT the self-
test. CLEAR
the DTCs.
No
GO to D10 .
D10 CHECK CIRCUIT 599 (PK/LG) FOR SHORT TO
GROUND z
Measure the resistance between GEM C201c Pin 25, Yes Klj . 16 ba
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Circuit 599 (PK/LG), harness side and ground.
z Is the resistance greater than 10,000 ohms? GO to
D11 .
No
REPAIR Circuit 599 (PK/LG).
REPEAT the self- test. CLEAR
the DTCs. D11 CHECK CIRCUIT 599 (PK/LG) FOR OPEN
z
Measure the resistance between GEM C201c Pin 25,
Circuit 599 (PK/LG), harness side and luggage
compartment lid release relay Pin 1, Circuit 599 (PK/LG),
harness side.
z Is the resistance 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 Circuit 599 (PK/LG).
REPEAT the self- test. CLEAR
the DTCs. D12 CHECK CIRCUIT 84 (VT/YE) FOR SHORT TO POWER
z
Disconnect: GEM C201c.
z Measure the voltage between luggage compartment lid
release relay Pin 3, Circuit 84 (VT/YE), harness side and
ground.
z Is the voltage greater than 10 volts? Yes
REPAIR Circuit 84 (VT/YE).
REPEAT the self-
test. CLEAR
the DTCs.
No
GO to D13 .
D13 CHECK CIRCUIT 84 (VT/YE) FOR OPEN
z
Disconnect: Luggage Compartment Lid Release Solenoid
C430.
z Measure the resistance between luggage compartment
lid release relay Pin 3, Circuit 84 (VT/YE), harness side
and luggage compartment lid release solenoid C430 Pin
2, Circuit 84 (VT/YE), harness side. Yes
GO to
D14 .
No
REPAIR Circuit 84 (VT/YE).
REPEAT the self- test. CLEAR
the DTCs. Klj . 17 ba
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PINPOINT TEST E: PANIC FUNCTION DOES NOT OPERATE
CORRECTLY z
Is the resistance less than 5 ohms? D14 CHECK CIRCUIT 1205 (BK) FOR OPEN
z
Measure the resistance between luggage compartment
lid release solenoid C430 Pin 1, Circuit 1205 (BK),
harness side and ground.
z Is the resistance less than 5 ohms? Yes
INSTALL a new luggage
compartment lid release
switch. REPEAT the self-test.
CLEAR the DTCs.
No
REPAIR Circuit 1205 (BK).
REPEAT the self- test. CLEAR
the DTCs. Test Step Result / Action to Take
E1 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
E2 .
No
REFER to Section 413 -
09 .
E2 CHECK THE GEM PID LAST DATA RECEIVED FOR PANIC
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
E3 .
No
GO to Pinpoint Test D .
E3 CHECK THE COURTESY LAMPS
z
Connect the diagnostic tool.
z Trigger the GEM active command COURTESYL ON and
OFF.
z Do the courtesy lamps illuminate and turn off? Yes
GO to
E4 .
No
REFER to Section 417 -
02 . TEST the system for Klj . 18 ba
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normal operation.
E4 CHECK THE GEM OUTPUT TO THE HORN
z
Connect the diagnostic tool.
z Trigger the GEM active command HORN ON and OFF.
z Did the horn sound and turn off? Yes
GO to
E5 .
No
GO to E6 .
E5 CHECK THE GEM OUTPUT TO THE PARKING LAMPS
z
Connect the diagnostic tool.
z Trigger the GEM active command PARKLAMPS ON and
OFF.
z Did the parking lamps illuminate and turn off? Yes
INSTALL a new GEM. For
additional information,
REFER to
Section 419 -
10 . REPEAT the self-
test.
CLEAR the DTCs.
No
GO to E10 .
E6 CHECK CIRCUIT 6 (YE/LG) FOR SHORT TO POWER
z
Disconnect: Horn Relay.
z Disconnect: GEM C201c.
z Measure the voltage between GEM C201c Pin 12, Circuit 6
(YE/LG), harness side and ground.
z Is the voltage greater than 10 volts? Yes
GO to
E7 .
No
REPAIR Circuit 6 (YE/LG).
REPEAT the self- test.
CLEAR the DTCs. E7 CHECK CIRCUIT 6 (YE/LG) FOR SHORT TO GROUND
z
Measure the resistance between GEM C201c Pin 12, Circuit
6 (YE/LG), harness side and ground.
z Is the resistance greater than 10,000 ohms? Yes
GO to
E8 .
No
REPAIR Circuit 6 (YE/LG).
REPEAT the self- test.
CLEAR the DTCs. E8 CHECK CIRCUIT 6 (YE/LG) FOR OPEN
z
Measure the resistance between GEM C201c Pin 12, Circuit
6 (YE/LG), harness side and horn relay Pin 1, Circuit 6
(YE/LG), harness side. Yes
GO to
E9 .
No
REPAIR Circuit 6 (YE/LG).
REPEAT the self- test.
CLEAR the DTCs. Klj . 19 ba
212003 Mustang Workshop Manual
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