2003 FORD MUSTANG wiring

GENERAL PROCEDURES
Communication Circuit Wiring Repair
1. Disconnect the battery ground cable. For additional information, refer to Section 414- 01.
2. Strip the wires.
3. NOTE: Use rosin core mildly activated (RMA) solder, not acid core solder.
Solder the wires. 1. Install the heat shrink tube.
2. Twist the wires together.
3. Solder the wires together.
4. NOTE: Wait for the solder to cool before moving the wires.
Bend the wires back in a straight line.
SECTION 418-
00: Module Communications Network 2003 Mustang Workshop Manual Special Tool(s)
Heat Gun
107-
R0300 or equivalent Klj . 1 ba
32003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

Calibration update is used to install a new calibration and strategy into a module. The updates are
usually issued to fix a concern in the module software and would normally be addressed by a technical
service bulletin (TSB). This method has been used by the PCM for several years. Other modules will
be adopting this strategy as well.
Programmable Parameters
This method is used to configure parameters that can be modified in service. These are typically at the
preference of the customer. Not all features controlled by the module are listed in this configuration
method. Refer to the Module Configuration Index for a list of features by system.
If a module that has been modified using programmable parameters needs to be installed, the PMI
procedure will maintain the parameters in their altered state if WDS is able to communicate with the
old module during Vehicle ID. Otherwise you may need to use programmable parameters to return
them to the altered state.
Vehicle Identification (VID) Block
Some PCMs contain a memory area called a vehicle identification (VID) block. The VID block is used
to store backup data for each programmable module, as well as, powertrain configuration information.
If the diagnostic tool cannot retrieve module option content information from the suspect module, the
diagnostic tool will attempt to extract backup information from the PCM's VID block.
The PCM VID block contains the factory settings for the configurable modules unless the PCM is
flashed with a new calibration, in which case some PCM parameters may be modified.
As-
Built Data Center
The As- Built Data Center maintains a record of the vehicle configuration in a database. The vehicle's
VIN is required to obtain this information. The As- Built Data Center records the applicable module
configurations stored in each module before the vehicle leaves the factory. The As- Built Data Center
will always reflect the original build of the vehicle as it left the factory. Only contact the As- Built Data
Center when directed to do so by the diagnostic tool.
Inspection and Verification
1. Visually inspect for obvious signs of electrical damage. Refer to the following chart:
Configurable Modules
The vehicle contains the following modules that are configurable: zgeneric electronic module (GEM) Visual Inspection
Chart Electrical
z
Wiring harness
z Connectors Klj . 2 ba
32003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

DIAGNOSIS AND TESTING
Anti-
Theft — Passive Anti- Theft System (PATS)
Refer to Wiring Diagrams Cell 112 , Anti-
Theft for schematic and connector information.
Refer to Wiring Diagrams Cell 60 , Instrument Cluster for schematic and connector information.
Inspection and Verification
NOTE: PATS must be reconfigured upon installment of a new instrument cluster. Refer to Section 418 -
00 .
1. Verify the customer concern by duplicating the condition.
2. Visually inspect for obvious signs of mechanical and electrical damage.
3. If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the
diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
zcheck that the program card is correctly installed.
SECTION 419-
01: Anti-Theft — PATS 2003 Mustang Workshop Manual Special Tool(s)
73III Automotive Meter
105-
R0057 or equivalent Worldwide Diagnostic System
(WDS)
418-
F224,
New Generation STAR (NGS)
Tester
418- F052, or equivalent
diagnostic tool
Visual Inspection Chart Mechanical Electrical
z
Ignition lock cylinder
z Encoded ignition key (PATS key)
z Use of non- encoded ignition key (key without the molded plastic
head, non- PATS key)
z Use of a non- programmed encoded ignition key z
Central junction box
fuses:
„5 (15A)
„ 21 (5A)
„ 34 (20A)
z PATS transceiver
z Connectors
z Ignition switch Klj . 1 ba
182003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

z
check the connections to the vehicle.
z check the ignition switch position.
4. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool manual.
5. Carry out the DATA LINK DIAGNOSTIC TEST. If diagnostic tool responds with: zCKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Section 418 -
00 .
z NO RESP/NOT EQUIP for instrument cluster, go to Pinpoint Test A.
z SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs),
erase the continuous DTCs and carry out self- test diagnostics for the instrument cluster.
6. If the DTCs retrieved are related to the concern, go to Instrument Cluster Diagnostic Trouble Code (DTC) Index to continue diagnostics.
7. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics.
Instrument Cluster Diagnostic Trouble Code (DTC) Index Instrument Cluster Diagnostic Trouble Code (DTC) Index DTC Description Source Action
B1202 Fuel Sender Open Circuit ICM REFER to
Section 413
- 01 .
B1204 Fuel Sender Short to Ground ICM REFER to
Section 413
- 01 .
B1213 Anti-
Theft Number of Programmed Keys is Below
Minimum ICM GO to
Pinpoint Test D .
B2103 or
B1232 Antenna Not Connected —
Defective Transceiver ICM GO to
Pinpoint Test E .
B1317 Battery Voltage High ICM REFER to
Section 414
- 00 .
B1318 Battery Voltage Low ICM REFER to
Section 414
- 00 .
B1342 ECU Is Defective ICM REFER to
Section 413
- 01 .
B1356 Ignition Run Circuit Open ICM REFER to
Section 211
- 05 .
B1364 Ignition Start Circuit Open ICM REFER to
Section 211
- 05 .
B1600 PATS Ignition Key Transponder Signal Is Not Received —
Damaged Key or Non-
PATS Key ICM GO to
Pinpoint Test F .
B1601 PATS Received Incorrect Key-Code From Ignition Key
Transponder (Unprogrammed Encoded Ignition Key) ICM GO to
Pinpoint Test G .
B1602 PATS Received Invalid Format Of Key-
Code From Ignition
Key Transponder (Partial Key Read) ICM GO to
Pinpoint Test H .
B1681 PATS Transceiver Signal Is Not Received (Not
Connected, Damaged, or Wiring) ICM GO to
Pinpoint Test I . Klj . 2 ba
182003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

PINPOINT TEST I: THE ANTI-
THEFT SYSTEM DOES NOT OPERATE
CORRECTLY — PATS TRANSCEIVER SIGNAL IS NOT RECEIVED
(NOT CONNECTED, DAMAGED, OR WIRING) H2 OBTAIN A NEW ENCODED
IGNITION KEY z
Key in OFF position.
z Cut a new encoded ignition key.
z Key in ON position.
z Program a new encoded ignition
key; for additional information, refer
to Key Programming — Erase All Key
Codes and Program Two Keys .
z Enter the following diagnostic mode
on the diagnostic tool: Instrument
Cluster On- Demand Self- Test.
z Is DTC B1602 retrieved? Yes
GO to
H3 .
No
System is OK. If the customer has any remaining
encoded keys at home, instruct them to carry out
Key Programming — Program a Key Using Two
Programmed Keys on each remaining key. This
procedure is detailed in the Owners Guide. H3 INSTALL A NEW PATS
TRANSCEIVER z
Key in OFF position.
z Install a new PATS transceiver; for
additional information, refer to
Module — Passive Anti - Theft
Transceiver .
z Key in ON position.
z Enter the following diagnostic mode
on the diagnostic tool: Instrument
Cluster On- Demand Self- Test.
z Are any DTCs retrieved? Yes
REFER to Instrument Cluster Diagnostic Trouble
Code (DTC) Index.
No
System is OK.
Test Step Result / Action to Take
I1 USE THE DTCS FROM THE INSTRUMENT CLUSTER
SELF TESTS z
Use the recorded results from the Instrument Cluster
Continuous and On- Demand Self-Tests.
z Is DTC B1681 retrieved? Yes
GO to
I2 .
No
System is OK. I2 CHECK THE PATS TRANSCEIVER FOR VOLTAGE —
CIRCUIT 20 (WH/LB) z
Key in OFF position.
z Disconnect: PATS Transceiver C252.
z Key in ON position.
z Measure the voltage between PATS transceiver C252
Pin 2, Circuit 20 (WH/LB), harness side and ground. Yes
GO to
I3 .
No
REPAIR Circuit 20 (WH/LB).
REPEAT the self- test. CLEAR
the DTCs. Klj . 12 ba
182003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

5.
CAUTION: Folding the headliner will result in damage to the headliner.
Remove the headliner. 1. Disconnect the electrical connector.
2. Release the wiring harness locators.
3. Remove the headliner.
Installation 1. CAUTION: Folding the headliner will result in damage to the headliner.
Install the headliner. 1. Position the headliner.
„Apply Headliner Adhesive F1VY-19562-A meeting Ford specification WSS-
M2G355- B, to the headliner using the existing pattern.
2. Connect the electrical connector.
3. Engage the wiring harness locators.
2. Install the two pin- type retainers. 3. Install the two sun visors. Klj . 2 ba
32003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

DIAGNOSIS AND TESTING
Rear View Mirrors
Refer to Wiring Diagrams Cell
124 , Power Mirrors for schematic and connector information.
Inspection and Verification 1. Verify the customer concern by operating the system.
2. Visually inspect for obvious signs of mechanical or electrical damage.
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the concern is not visually evident, verify the symptom and refer to the Symptom Chart.
Symptom Chart
Refer to the Wiring Diagrams for connector numbers stated in the pinpoint tests. SECTION 501-
09: Rear View Mirrors 2003 Mustang Workshop Manual Special Tool(s)
73III Automotive Meter
105-
R0057 or equivalent Flex Probe Kit
105-
R025B or equivalent
Visual Inspection Chart Mechanical Electrical
z
Exterior rear view mirrors
z Interior rear view mirror z
Central junction box (CJB) fuse 19 (15A)
z Wiring harness
z Connections
z Exterior rear view mirror control
z Exterior rear view mirror motor
SYMPTOM CHART Condition
Possible Sources Action
z The mirrors are inoperative zExterior rear view
mirror control. z
Go To Pinpoint Test A . Klj . 1 ba
82003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

z
seat control switch (14C715)
z front seat backrest pad adjusting pump (65530)
z front seat adjusting motor drive tube (618B62)
z system wiring and circuit protection
z front seat backrest adjusting hose (65528)
z driver backrest and cushion bolster (Cobra)
z driver bolster and lumbar adjusting pad pump motor and solenoid module (Cobra)
z driver bolster and lumbar control switch (Cobra)
z driver seat cushion adjusting hose (Cobra)
Seats — Front Seat Backrest Latch
NOTE: Under no circumstances are the front seat backrest latch components to be repaired as
individual components. If a front seat backrest latch (62648) or component is non- functional or
damaged, a new front seat backrest latch must be installed.
A release handle on the outboard rear corner of the seat backrest is manually operated to unlock the
front seat backrest latch.
Rear Seat
The rear seat cushion pad and frame (600A88) is retained in the following manner:
zPins are located on the bottom front of the rear seat cushion pad and frame which secure the
rear seat cushion pad and frame to the front floor pan (11135).
z The pins are inserted into locking plates on the floor crossmember with a push button release.
z The bottom of the rear seatback frame is retained with screws to the front floor pan. Klj . 2 ba
32003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...