2003 FORD MUSTANG radio

z
Is the noise eliminated? B4 CHECK GENERATOR
z
Key in OFF position.
z Check the generator by disconnecting
the wiring from the voltage regulator.
z Key in START position.
z Turn on the audio unit and check the
radio reception.
z Is the noise eliminated? Yes
INSTALL a new generator. REFER to
Section 414 - 02 . TEST the system for normal operation.
No
GO to B5 .
B5 CHECK IGNITION CIRCUITS
z
Key in OFF position.
z Check the ignition circuits for correct
routing, grounding, and integrity of
connections.
z Are the ignition components OK? Yes
GO to
B6 .
No
REPAIR the ignition system as necessary. TEST
the system for normal operation. B6 SUBSTITUTE ANTENNA
z
Substitute a known good antenna.
Ground the antenna base to an
unpainted metal surface on the vehicle.
z Key in START position.
z Verify the operation of the audio unit.
z Is the noise eliminated? Yes
INSTALL a new antenna. TEST the system for
normal operation.
No
GO to
B7 .
B7 SUBSTITUTE ANTENNA CABLE
z
Key in OFF position.
z Substitute a known good antenna
cable.
z Key in START position.
z Verify the operation of the audio unit.
z Is the noise eliminated? Yes
INSTALL a new antenna cable. TEST the system
for normal operation.
No
GO to
B8 .
B8 SUBSTITUTE AUDIO UNIT
z
Key in OFF position.
z Substitute a known good audio unit.
z Key in START position.
z Verify the operation of the audio unit.
z Is the noise eliminated? Yes
REMOVE the audio unit and SEND it to an
authorized Ford audio system repair facility.
TEST the system for normal operation.
No
GO to
B9 .
B9 SUBSTITUTE SUBWOOFER
AMPLIFIER z
Key in OFF position.
z Substitute a known good subwoofer
amplifier.
z Key in START position.
z Verify the operation of the audio unit.
z Is the noise eliminated? Yes
REMOVE the subwoofer amplifier and SEND it to
an authorized Ford audio system repair facility.
TEST the system for normal operation.
No
GO to
B10 .
B10 REPOSITION COMPONENTS
z
Key in OFF position.
z Determine if the noise can be
eliminated by repositioning the antenna
cable, speaker circuits, or audio unit
power feed circuits away from other
circuits or brackets.
z Key in START position.
z Verify the operation of the audio unit. Yes
Permanently REPOSITION the components as
needed. TEST the system for normal operation.
No
GROUND various parts (for example, engine,
fenders, quarter panels, stone deflectors, body
sheet metal) of the vehicle to the frame using a Klj . 6 ba
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DESCRIPTION AND OPERATION
Antenna
The antenna system consists of:
zantenna mast
z antenna base and cable
z antenna lead- in cable
The radio antenna uses a two- piece coaxial cable to connect the audio unit to the antenna. The front
antenna lead- in cable is connected to the audio unit and has an in- line connector at the RH cowl side.
SECTION 415-
02: Antenna 2003 Mustang Workshop Manual Klj . 1 ba
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REMOVAL AND INSTALLATION
Antenna
Removal
1. Lower the glove compartment by releasing the stops from the instrument panel.
2. Disconnect the antenna in- line connector.
3. Remove the antenna base and cable. 1. Remove the radio antenna base cap.
2. Remove the screws.
3. Remove the antenna base and cable.
z Disconnect the antenna cable grommet.
Installation 1. To install, reverse the removal procedure.
SECTION 415-
02: Antenna 2003 Mustang Workshop Manual Klj . 1 ba
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DIAGNOSIS AND TESTING
Communications Network
Refer to Wiring Diagrams Cell
14 , Multiplex Communication Network for schematic and connector
information.
Principles of Operation
The vehicle has two module communications networks. The standard corporate protocol (SCP) which
is an unshielded twisted pair cable (data bus plus, Circuit 914 [TN/OG] and data bus minus, Circuit 915
[PK/LB]), and the international standards organization (ISO) 9141 network which is a single wire
(Circuit 70 [LB/WH]). The diagnostic tool can connect to both networks through the data link connector
(DLC). This makes diagnosis and testing of these systems easier by allowing one smart tester to be
able to diagnose and control any module on the two networks from one connector. The DLC can be
found under the instrument panel between the steering column and the radio.
The ISO 9141 communication network does not permit inter- module communication. When the
diagnostic tool communicates to modules on the ISO 9141 communication network, the diagnostic tool
must ask for all information; the modules cannot initiate communications.
The SCP network will remain operational even with the severing of one of the bus wires.
Communications will also continue if one of the bus wires is shorted to ground or battery positive
voltage (B+) or if some, but not all, termination resistors are lost.
Unlike the SCP communication network, the ISO 9141 communication network will not function if the
wire is shorted to chassis ground or battery positive voltage (B+). Also, if one of the modules on the
ISO 9141 network loses power or shorts internally, communications to that module will fail.
The powertrain control module (PCM) is on the SCP communication network. The PCM controls the
engine for better fuel economy, emissions control, and failure mode detection and storage. Refer to
Powertrain Control/Emissions Diagnosis (PC/ED) manual Section 3 for diagnosis and testing of the
PCM.
The restraint control module (RCM) is on the ISO 9141 network. The RCM controls the deployment of
the air bags based on sensor input. For additional information, refer to Section 501 - 20B .
SECTION 418-
00: Module Communications Network 2003 Mustang Workshop Manual Special Tool(s)
73 Digital Multimeter or
equivalent
105-
R0051 Worldwide Diagnostic System
(WDS)
418-
F224,
New Generation STAR (NGS)
Tester
418- F052, or equivalent
diagnostic tool Klj . 1 ba
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DESCRIPTION AND OPERATION
Anti-
Theft — Passive Anti- Theft System (PATS)
The passive anti- theft system (PATS) contains the following components:
z theft indicator
z encoded ignition key
z transceiver module
z instrument cluster
z powertrain control module (PCM)
z standard corporate protocol (SCP) communication network
The PATS uses radio frequency identification technology to deter a driveaway theft. Passive means
that it does not require any activity from the user. This system is known as SecuriLock® in North
America, Safeguard® in the U.K. and PATS in continental Europe. This information can be found in
owners literature.
The PATS uses a specially encoded ignition key. Each encoded ignition key contains a permanently
installed electronic device called a transponder. Each transponder contains a unique electronic
identification code, with over 72 million billion combinations.
Each encoded ignition key must be programmed into the vehicle's instrument cluster (the instrument
cluster is also known as a hybrid electronic cluster [HEC]), before it can be used to start the engine.
There are special diagnostic procedures outlined in the workshop manual that must be carried out if
new encoded ignition keys are to be installed.
The encoded key is larger than a traditional ignition key. The key does not require batteries and should
last the life of the vehicle.
The transceiver module communicates with the encoded ignition key. This module is located behind
the steering column shroud and contains an antenna connected to a small electronics module. During
each vehicle start sequence, the transceiver module reads the encoded ignition key identification code
and sends the data to the instrument cluster.
The control functions are contained in the instrument cluster. This module carries out all of the PATS
functions such as receiving the identification code from the encoded ignition key and controlling engine
enable. The instrument cluster initiates the key interrogation sequence when the vehicle ignition switch
is turned to RUN or START.
The PATS uses the PCM to enable or disable the engine. The instrument cluster communicates with
the PCM over the SCP network in order to enable engine operation. The instrument cluster and the
PCM use sophisticated messages in order to prevent a theft. The instrument cluster and the PCM
share security data (when first installed together) that makes them a matched pair. After this security
data sharing, these modules will not function in other vehicles. The shared PCM ID is remembered
even if the battery is disconnected. The instrument cluster also stores the vehicle's key identification
code even if the battery is disconnected. There are special diagnostic procedures outlined in this
workshop manual that may be carried out if either a new instrument cluster or PCM needs to be
installed.
All elements of PATS must be functional before the engine is allowed to start. If any of the components
are not working correctly, the vehicle will not start.
PATS uses a visual theft indicator. This indicator will prove out for three seconds when the ignition SECTION 419-
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DIAGNOSIS AND TESTING
Body System
Inspection and Verification
Leaks
NOTE:
Trim will reveal the location of most leaks.
1. Remove any trim or carpet in the general area of the leak.
2. Road test or water test the vehicle.
3. Inspect for a dust pattern around the area in question. Inspect for water paths near and above the area in question.
4. Some leaks can be located by placing bright light under the vehicle, removing any necessary trim or carpet, and inspecting the interior of the body at joints and weld lines.
Noise
Wind noise, rattles, and their sources are detected by driving the vehicle at highway speeds. The
vehicle should be driven in four different directions with all of the windows closed, the radio off, the
blower motor off, and all of the ventilation ducts open.
Most wind noise leaks will occur at the door and window seals or at the sheet metal joints in the door
or the door opening.
Symptom Chart SECTION 501-
00: Body System — General Information 2003 Mustang Workshop Manual Symptom Chart
Condition
Possible Sources Action
z Dust and
Water Leaks z
Body sealer missing.
z Opening in weldings
or body joints.
z Components not fully
installed.
z Components missing.
z Components
damaged. z
REMOVE trim panel. CHECK
for leaks and SEAL with
appropriate sealer. ROAD
TEST or WATER TEST for
leaks. RECHECK for leaks;
USE light under the vehicle
with trim removed. CHECK
interior of body at joints and
weld lines.
z Dust/Water
Leaks at Floor
Pan and
Grommets z
Missing or damaged
plugs and/or
grommets. z
CHECK plugs for proper
installation. REPLACE if
necessary.
z Door Drain
Holes
Collecting
Water z
Holes clogged with
mud or road tar. z
CLEAN drain holes of dirt and
foreign material. CHECK drain
holes regularly. TEST the
system for normal operation. Klj . 1 ba
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Fig. 41: Power Windows Circuit, Coupe
RADIO

2003 Ford Mustang
2003 SYSTEM WIRING DIAGRAMS Ford - Mustang
111
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Fig. 42: Base Radio Circuit

2003 Ford Mustang
2003 SYSTEM WIRING DIAGRAMS Ford - Mustang
111
18 ноября 2011 г. 12:45:09Page 43 © 2006 Mitchell Repair Information Company, LLC.