2003 FORD MUSTANG steering wheel

z
Does the horn continue to sound? REPAIR Circuit 6 (YE/LG). TEST the system for
normal operation.
No
INSTALL a new GEM; REFER to
Section 419 - 10 .
TEST the system for normal operation. B5 CHECK THE AIR BAG SLIDING
CONTACT z
Deactivate the air bag system. Refer
to Section 501 - 20B .
z Disconnect the steering wheel switch
harness from the air bag sliding
contact.
z Does the horn continue to sound? Yes
INSTALL a new air bag sliding contact. REFER to
Section 501
- 20B . TEST the system for normal
operation.
No
GO to B6 .
B6 CHECK STEERING WHEEL SWITCH
HARNESS z
Inspect the steering wheel switch
harness for shorts, opens, or any
damage.
z Is the steering wheel switch
harness OK? Yes
INSTALL a new horn switch. REFER to
Switch —
Horn . TEST the system for normal operation.
No
INSTALL a new steering wheel switch harness.
TEST the system for normal operation. Klj . 5 ba
52003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Module —
Passive Anti- Theft Transceiver
Removal
1. CAUTION: Electronic modules are sensitive to electrical charges. If exposed to
these charges, damage may result.
Disconnect the battery ground cable (14301).
2. Remove the ignition switch lock cylinder (11582). 1. Insert the ignition key into the ignition switch lock cylinder and turn to the RUN position.
2. Insert a punch in the access hole of the steering column and press the release tab while
pushing out the ignition switch lock cylinder.
3. Unscrew the tilt wheel handle and shank and remove.
4. Remove the instrument panel steering column opening cover. 1. Remove the screws.
2. Remove the LH instrument panel steering column opening cover.
SECTION 419-
01: Anti-Theft — PATS 2003 Mustang Workshop Manual Klj . 1 ba
42003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

5.
NOTE: The steering wheel has been removed for clarity.
Remove the upper and lower steering column shrouds. 1. Remove the screws.
2. Remove the lower steering column shroud.
3. Remove the upper steering column shroud.
6. Remove the instrument panel steering column opening cover reinforcement. 1. Remove the bolts.
2. Remove the instrument panel steering column opening cover reinforcement.
7. NOTE: The steering wheel has been removed for clarity.
Remove the anti- theft transceiver module.
1. Remove the screw from the bottom of the transceiver module.
2. NOTE: Only apply pressure or leverage below the key cylinder lower rib.
Disconnect the electrical connector and remove the module. Klj . 2 ba
42003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Ignition Lock Cylinder —
Non-Functional
Removal and Installation 1. NOTE: Make sure the front wheels are in the straight- ahead position.
Disconnect the battery ground cable (14301) and wait at least one minute to allow the depletion
of the restraint system backup power supply. For additional information, refer to Section 414 -
01 .
2. WARNING: To avoid the risk of serious personal injury, read and follow all
warnings, cautions, notes and instructions in the deactivation procedure.
Deactivate the supplemental restraint system (SRS). For additional information, refer to
Supplemental Restraint System (SRS) Deactivation and Reactivation in this section.
3. WARNING: To reduce the risk of serious personal injury, read and follow all
warnings, cautions, notes and instructions in the steering wheel removal and installation
procedure.
Remove the steering wheel assembly. For additional information, refer to Wheel in this section.
4. Twist off the cap from the ignition switch cylinder.
5. NOTE: The lock cylinder is repaired by discarding the inoperative lock cylinder and building a
new lock cylinder using the appropriate lock repair package (F85Z-11582- AA). The lock repair
package includes a detailed instruction sheet to build the new lock cylinder to the current key
code of the vehicle.
SECTION 501-
14A: Handles, Locks, Latches and Mechanisms 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

z
Is the resistance less than 5 ohms? E9 CHECK THE HORN FOR NORMAL OPERATION
z
Depress the steering wheel horn switch.
z Did the horn sound? Yes
INSTALL a new GEM. For
additional information,
REFER to
Section 419 -
10 . REPEAT the self-
test.
CLEAR the DTCs.
No
REFER to Section 413 -
06 .
E10 CHECK CIRCUIT 1032 (WH/BK) FOR SHORT TO POWER
z
Disconnect: Parking Lamp Relay.
z Disconnect: GEM C201e.
z Measure the voltage between GEM C201e Pin 11, Circuit
1032 (WH/BK), harness side and ground.
z Is the voltage greater than 10 volts? Yes
GO to
E11 .
No
REPAIR Circuit 1032
(WH/BK). REPEAT the
self- test. CLEAR the
DTCs. E11 CHECK CIRCUIT 1032 (WH/BK) FOR SHORT TO GROUND
z
Measure the resistance between GEM C201e Pin 11, Circuit
1032 (WH/BK), harness side and ground.
z Is the resistance greater than 10,000 ohms? Yes
GO to
E12 .
No
REPAIR Circuit 1032
(WH/BK). REPEAT the
self- test. CLEAR the
DTCs. E12 CHECK CIRCUIT 1032 (WH/BK) FOR OPEN
z
Measure the resistance between GEM C201e Pin 11, Circuit Yes Klj . 20 ba
212003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

Driver Air Bag Module
The driver air bag module:
zis installed as an assembly.
z is mounted in the center of the steering wheel.
Clockspring
The clockspring: zis mounted on the steering column, behind the steering wheel.
z provides a continuous electrical path from the restraints control module (RCM) to the driver air
bag.
Passenger Air Bag Module
The passenger air bag module: zis installed as an assembly.
z is mounted in the RH side of the instrument panel.
Restraints Control Module (RCM)
The restraints control module (RCM) performs the following functions: zsignals the inflators to deploy the air bags in the event of a deployable crash.
z monitors the air bag supplemental restraint system (SRS) for faults.
z illuminates the air bag indicator if a fault is detected.
z flashes the air bag indicator to indicate the lamp fault code (LFC) detected.
z communicates through the data link connector (DLC) the current or historical diagnostic trouble
codes (DTCs).
z signals the generic electronic module (GEM) to activate a chime if the air bag indicator is not
available and another SRS fault exists.
NOTE: The safing sensor is internal to the RCM and is not repaired separately.
The RCM monitors the SRS for possible faults. If a fault is detected while the ignition switch is in the
RUN position, the RCM will illuminate the air bag indicator located in the instrument cluster.
When the ignition is cycled (turned off and then on), the air bag indicator will begin its prove out
sequence. During prove out the air bag indicator will illuminate for six seconds, go off for two seconds
and then, if a system fault exists, flash the two- digit LFC. The air bag indicator will flash the LFC five
times, then it will remain illuminated for the rest of the key cycle. The RCM will also communicate the Klj . 2 ba
42003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

Please refer to the appropriate vehicle shop manual to determine location of the
front air bag sensors.
The side air bag sensors are located at or near the base of the B-
pillar.
To deplete the backup power supply energy, disconnect the battery ground cable
and wait at least one minute. Be sure to disconnect auxiliary batteries and power
supplies (if equipped).
Disconnect the battery ground cable (14301) and wait at least one minute. For additional
information, refer to Section 414 - 01 .
2. WARNING: To reduce the risk of serious personal injury, read and follow all
warnings, cautions, notes, and instructions in the supplemental restraint system
(SRS) deactivation/reactivation procedure.
Deactivate the supplemental restraint system (SRS). For additional information, refer to
Supplemental Restraint System (SRS) Deactivation and Reactivation in the General
Procedures portion of this section.
2. Remove the two steering wheel plugs.
3. Remove the two driver air bag module retaining bolts (one shown).
4. Remove the driver air bag module. 1. Disconnect the driver air bag module electrical connector.
2. Remove the driver air bag module. Klj . 2 ba
62003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

9. With the restraint system diagnostic tools installed at all deployable devices, prove out the
supplemental restraint system (SRS). For additional information, refer to Air Bag Supplemental Restraint System (SRS) in the Diagnosis and Testing portion of this section.
10. Disconnect the battery ground cable and wait at least one minute. For additional information, refer to Section 414 - 01 .
Installation
WARNING: To reduce the risk of serious personal injury, read and follow all warnings,
cautions and notes at the beginning of the removal procedure.
1. Disconnect the battery ground cable and wait at least one minute. For additional information, refer to Section 414 - 01 .
2. Remove the restraint system diagnostic tool from the clockspring electrical connector at the top of the steering column.
3. Connect the driver air bag module. 1. Connect the driver air bag module electrical connector.
2. Position the driver air bag module to the steering wheel.
4. Install the two driver air bag module bolts. Klj . 4 ba
62003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...