2003 FORD MUSTANG brake

PINPOINT TEST B: THE CONVERTIBLE TOP HESITATES/COMES UP
UNEVEN z
Is the resistance less than 5 ohms? A15 CHECK CIRCUIT 903 (RD) FOR AN OPEN
z
Disconnect: Raise Relay C4063.
z Measure the resistance between raise relay C4063 pin 30, circuit
903 (RD), harness side and convertible top motor C4062, circuit
903 (RD), harness side.
z Is the resistance less than 5 ohms? Yes
INSTALL a new raise
relay. TEST the
system for normal
operation.
No
REPAIR the circuit.
TEST the system for
normal operation.
A16 CHECK THE RAISE INPUT TO THE MOTOR
z
Key in ON position.
z Depress and hold the convertible top switch in the RAISE position.
z Measure the voltage between convertible top motor C4062, circuit
903 (RD), harness side and ground.
z Is the voltage greater than 10 volts? Yes
INSTALL a new
convertible top motor;
REFER to
Hydraulic System, Lift Cylinder
and Motor in this
section. TEST the
system for normal
operation.
No
INSTALL a new raise
relay. TEST the
system for normal
operation. Test Step Result / Action to Take
B1 CHECK THE CONVERTIBLE TOP UP/DOWN
OPERATION NOTE:
The parking brake must be applied for the Yes Klj . 7 ba
102003 Mustang Workshop Manual
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PINPOINT TEST C: THE CONVERTIBLE TOP DOES NOT RAISE OR
DOES NOT GO UP ALL THE WAY
PINPOINT TEST D: THE CONVERTIBLE TOP HYDRAULIC SYSTEM convertible top system to operate.
z Key in ON position.
z Actuate the convertible top switch to the LOWER
and RAISE positions.
z Did the convertible top operate to the full down
and full up position without hesitating? ADJUST the convertible top linkage.
TEST the system for normal
operation.
No
GO to
B2 .
B2 CHECK THE MOTOR OPERATION
z
Gain access to the convertible top motor/pump
assembly.
z Operate the convertible top to the LOWER and
RAISE positions while listening to the motor.
z Did the motor stop and then continue at any
time? Yes
Go To Pinpoint Test A
.
No
GO to B3 .
B3 CHECK THE CONVERTIBLE TOP LINKAGE
z
Operate the convertible top to the LOWER and
RAISE positions while observing the convertible
top linkage.
z Did the linkage operate smoothly without
binding? Yes
Go To Pinpoint Test D
.
No
ADJUST the convertible top linkage.
TEST the system for normal
operation. Test Step Result / Action to Take
C1 CHECK THE CONVERTIBLE TOP OPERATION
NOTE:
The parking brake must be applied for the
convertible top system to operate.
z Key in ON position.
z Actuate the convertible top switch to the RAISE
position.
z Did the motor operate? Yes
GO to
C2 .
No
Go To Pinpoint Test A .
C2 CHECK THE CONVERTIBLE TOP LINKAGE
z
Operate the convertible top to the LOWER and
RAISE positions while observing the convertible
top linkage.
z Did the linkage bind and prevent the
convertible top from raising? Yes
ADJUST the convertible top linkage.
TEST the system for normal
operation.
No
Go To Pinpoint Test D
.
Test Step Result / Action to Take
D1 CHECK THE FLUID LEVEL
NOTE:
The fluid level should be even
with the bottom of the filler plug hole.
NOTE: Place an absorbent cloth
below the filler plug when checking
the fluid level.
z Remove the filler plug and check the Yes
GO to
D3 .
No
GO to D2 . Klj . 8 ba
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Functional Test III (System Road Test Inspection)
1. NOTE: If the RH or the rear safety belts are to be tested, the assistance of a passenger is
required.
Fasten the safety belts and proceed to a safe area.
2. Attain a speed of 8 km/h (5 mph).
3. WARNING: The driver and passenger must be prepared to brace themselves if the
retractor does not lock.
Test the safety belts. 1. Grasp the shoulder harness and prepare to lean forward.
2. WARNING: The maximum brake application should be on dry concrete or
equivalent hard surface, NEVER on wet pavement or gravel.
WARNING: The driver and passenger must be prepared to brace themselves
in the event the retractor does not lock.
Make a maximum brake application without a skid.
3. NOTE: Do not jerk on the safety belt webbing when carrying out this test. Lean forward slightly when the brake application is made.
4. The safety belts should lock up with minimum webbing extension.
5. If there is a lockup of both shoulder straps, the safety belt assemblies are functioning correctly. Should either or both retractors fail to lock up at the 8 km/h (5 mph) speed, repeat the test at a
constant 24 km/h (15 mph) speed. (This test must be carried out with the assistance of a RH
front or rear passenger if the RH front or rear safety belts are to be tested).
6. CAUTION: Before installing a new safety belt assembly, inspect the mounting area
for damage and distortion. If the retractor of a new safety belt assembly has been bolted
into a damaged or distorted mounting area, the retractor could be warped and may not
function. If this is the case, remove the retractor and return the sheet metal to the
original configuration and install another complete safety belt assembly.
If the retractors do not lock up at the 24 km/h (15 mph) test, return the vehicle for service of
malfunctioning safety belts.
Functional Test IV (Automatic Locking Retractor) WARNING: After any vehicle collision, the safety belt system at all outboard seating
positions (except driver, which has no "automatic locking retractor" feature) must be checked
by a qualified technician to verify that the "automatic locking" feature for child seats is still
functioning correctly, in addition to other checks for correct safety belt system function. A new
safety belt and retractor assembly must be installed if the safety belt assembly's "automatic
locking retractor" feature or any other safety belt function is not operating correctly when
checked according to the procedures in the workshop manual. Failure to install a new safety
belt and retractor assembly could increase the risk of injury in collisions.
1. Position the seat back into the full up position. Klj . 3 ba
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GENERAL INFORMATION

INTRODUCTION

In the past, when cars were simpler, diagrams were simpler. All components were connected by wires, and
diagrams seldom exceeded 4 pages in length. Today, some wiring diagrams require more than 16 pages. It
would be impractical to expect a service technician to trace a wire from page 1 across every page to page 16.
Components shown with a dashed line instead of a solid line indicate not all circuits are shown in this
particular diagram (circuits shown in system diagrams are typically applicable to that system only). The
remaining circuits connected to that component will be shown in the appropriate system that they apply to.
Today, the wiring diagram necessary to support a given repair procedure is included within that article or a
link is provided to the appropriate SYSTEM WIRING DIAGRAM article. For example, the wiring diagram
for a Ford EEC-IV system may be included in ENGINE PERFORMANCE and WIRING DIAGRAMS
articles for Ford Motor Co. The wiring diagram for a cruise control system may be included in
ACCESSORIES & EQUIPMENT section for the specific vehicle manufacturer, and the wiring diagram for
an anti-lock brake system may be included in BRAKES and WIRING DIAGRAMS for the specific
manufacturer.
WIRING DIAGRAMS cont ains all wiring diagrams not in cluded in STARTING & CHARGING
SYSTEMS and ACCESSORIES & EQUIPMENT. Th is includes: Data Link Connectors, Ground
Distribution, Power Distribution, Engine Performance, Electri c Cooling Fans, Anti-Lock Brakes, Electronic
Suspension and Electronic Steering wiring diagrams. The Data Link Conne ctors wiring diagrams show the
circuits by which the various on-board computers exchange information, and the diagnostic connectors used
for diagnosis and their location. The Ground Distribution wi ring diagrams show all vehicle ground points,
their location, and the components co mmon to those ground points. The Po wer Distribution wiring diagrams
show the power feed circuits and the components common to those power feeds.
Wiring diagrams used to support the information in ACCESSORIES & EQUIPMEN T are drawn in a "top-
down" format. The diagrams are drawn with the power source at the top of the diagram and the ground point
at the bottom of the diagram. Component locations are identified on the wiring diagrams. Any wires that do
not connect directly to a component are identifi ed on the diagram to indicate where they go.


WIRING DIAGRAM COLOR ABBREVIATIONS
COLOR ABBREVIATIONS
ColorNormalOptional

GENERAL INFORMATI


G
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For example, if you don't know the specific system in which the ignition switch is located, look up ignition
switch in the wiring diagram component location tables and go to the appropriate wiring diagram(s) which
contain either full or partial views of the ignition swit ch. The full view of the ignition switch is located in
Power Distribution.
The first listing for the component will be the full or most complete view of the component. Additional
listings will be partial views of the component. Not all components are used on all models.
All components will have a partial view in Gr ound Distribution and Power Distribution. Data Link
Connectors show connecting circuits between modules. Alternate names for components may be listed in
wiring diagram component locations tables.
WIRING DIAGRAM COMPONENT LOCATIONS
ComponentWiring Diagram
ABS Electronic Control UnitAnti-Lock Brakes; Data Link Connectors
ABS Hydraulic UnitAnti-Lock Brakes
Acceleration SensorAnti-Lock Brakes
Accessory Delay RelayPower Windows
A/C Compressor Clutch RelayEngine Performance
A/C SensorEngine Performance
A/C Pressure SwitchEngine Performance
Adaptive Lamp Control ModuleExterior Lights
Air Bag(s)Air Bag Restraint System
Air Bag ModuleAir Bag Restraint System
Air Bag Sensor(s)Air Bag Restraint System
Air Injection Pump RelayEngine Performance
Air Temperature SensorOverhead Console
Alternator (Generator)Generators & Regulators
Anti-Theft Control ModuleAnti-Theft System; Starters
Autolamp Control RelayHeadlight Systems; Daytime Running Lights
Automatic Shutdown (ASD) RelayEngine Performance; Generators & Regulators
Autostick SwitchEngine Performance
Auxiliary Battery RelayGenerators & Regulators
Back-Up LightsBack-Up Lights; Exterior Lights
Barometric (BARO) Pressure SensorEngine Performance
BatteryPower Distribution
Battery Temperature SensorEngine Performance
Body Control ModuleBody Control Computer; Anti-Theft System;
Daytime Running Lights; Engine Performance;
Headlight Systems; Warning Systems
Boost Control SolenoidEngine Performance
Boost SensorEngine Performance
Brake Fluid Level SwitchAnalog Instrument Panels
Brake On/Off (BOO) SwitchCruise Control Systems; Engine Performance;
Shift Interlock Systems
Buzzer ModuleWarning Systems

2002 Ford Focus ZX5
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Mega FuseGenerators & Regulators
Memory Seat/Mirror ModuleMemory Systems
Mirror DefoggerRear Window Defogger
Moon Roof MotorPower Moon Roof
Moon Roof RelayPower Moon Roof
Multi-Function Control ModuleWarning Systems
Neutral Safety SwitchStarters
Oil Level SwitchEngine Performance
Oil Pressure Switch/Sending UnitAnalog Instrument Panels; Engine Performance
Overhead ConsoleOverhead Console
Oxygen Sensor(s) (O2S)Engine Performance
Parking Brake SwitchAnalog Instrument Panels
Park LightsExterior Lights
Park/Neutral Position SwitchStarters; Engine Performance; Anti-Theft System;
Body Control Module
Perimeter Lighting Control RelayExterior Lights
Power AmplifierPower Antennas
Power Antenna ModulePower Antennas
Power Antenna MotorPower Antennas
Power Distribution CenterPower Distribution; Gene rators & Regulators;
Starters
Power Door Lock MotorsPower Door Locks
Power Mirror MotorsPower Mirrors; Memory Systems
Power Sliding Door ControllerPower Sliding Side Door
Power Seat MotorsPower Seats; Memory Systems
Power Steering Pressure SwitchEngine Performance
Power Top MotorPower Convertible Top
Power Top Relay(s)Power Convertible Top
Powertrain Control ModuleEngine Performance; Analog Instrument Panels; Cruise Control Systems; Data Link Connectors;
Generators & Regulators; Starters
Power Window MotorsPower Windows
Power Window Relay(s)Power Windows
Radiator Fan Motor(s)Electric Cooling Fans
Radiator Fan Relay(s)Engine Performance; Electric Cooling Fans;
Rainsense ModuleWiper/Washer Systems
Raise RelayPower Convertible Top
Remote Anti-Theft Personality (RAP) ModuleAnti-Theft System; Starters; Warning Systems
Seat Belt PretensionersAir Bag Restraint System
Seat Belt Retractor SolenoidPassive Restraints
Seat Belt SwitchAir Bag Restraint System; Passive Restraints
Shift Interlock SolenoidShift Interlock Systems
Shift Lock ActuatorShift Interlock Systems
Side Marker LightsExterior Lights


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SIR Coil Assembly (Clockspring)Air Bag Restraint System
Slip Ring (Clockspring)Air Bag Restraint System; Steering Column Switches
SRS Control ModuleAir Bag Restraint System
Starter MotorStarters
Starter Interrupt RelayStarters
Starter SolenoidStarters
Starter RelayStarters
Steering Wheel Position SensorAnti-Lock Brakes
StoplightsExterior Lights
Stoplight SwitchEngine Performance; Cruise Control Systems;
Anti-Lock Brakes
Sun Roof ECUPower Sun Roof
Sun Roof MotorPower Sun Roof
Sun Roof Position SensorPower Sun Roof
TaillightsExterior Lights
Throttle Position (TP) SensorEngine Performance
Torque Converter Clutch Solenoid/SwitchEngine Performance
Traction Control SwitchAnti-Lock Brakes
Trailer Tow ConnectorExterior Lights
Trailer Tow RelayExterior Lights
Transmission/TransaxleEngine Performance
Transmission Control Module (TCM)Engine Performance; Starters
Transmission Range SensorStarters; Back-Up Lights; Engine Performance
Transmission Range SwitchBack-Up Lights; Engine Performance; Anti-Theft
System
Turn Signal FlasherExterior Lights
Turn Signal LightsExterior Lights
Twilight Sentinel SwitchHeadlight Systems; Daytime Running Lights
Vapor Canister Le ak Detection PumpEngine Performance
Vehicle Control Module (VCM)Engine Performance
Vehicle Dynamic ModuleElectronic Suspension
Vehicle Speed Control ServoCruise Control Systems
Vehicle Speed SensorData Link Connectors; Analog Instrument Panels;
Cruise Control Systems; Electronic Suspension
Voltage RegulatorGenerators & Regulators
Water-In-Fuel SensorEngine Performance; Analog Instrument Panels
Wheel Speed SensorsAnti-Lock Brakes
Window Timer ModulePower Convertible Top
Windshield Intermittent Wiper RelayWiper/Washer Systems
Windshield Washer MotorWiper/Washer Systems
Wiper MotorWiper/Washer Systems

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Fig. 2: 4.6L, Air Conditioning Circuit
ANTI-LOCK BRAKES

2003 Ford Mustang
2003 SYSTEM WIRING DIAGRAMS Ford - Mustang
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