2003 FORD MUSTANG power steering

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-
01: Anti-Theft — PATS 2003 Mustang Workshop Manual Klj . 1 ba
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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
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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
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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. For additional information, refer to
Section 414 - 01 .
2. Wait at least one minute for the backup power supply in the restraints control module (RCM) to deplete its stored energy.
3. WARNING: Carry a live air bag module with the air bag and trim cover pointed away
from your body. This will reduce the risk of injury in the event of an accidental
deployment.
WARNING: Do not set an air bag module down with the trim cover face down. This
will reduce the risk of injury in the event of an accidental deployment.
Remove the driver air bag module from the vehicle. Refer to Driver Air Bag Module in this
section.
4. WARNING: The restraint system diagnostic tool is for restraint system service only.
Remove from vehicle prior to road use. Failure to remove could result in injury and
possible violation of vehicle safety standards.
Connect a restraint system diagnostic tool to the vehicle harness at the top of the steering
column.
5. Disconnect the passenger air bag module electrical connector.
6. WARNING: The restraint system diagnostic tool is for restraint system service only.
Remove from vehicle prior to road use. Failure to remove could result in injury and
possible violation of vehicle safety standards.
Connect a restraint system diagnostic tool to the vehicle harness.
7. Reconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
Reactivation Procedure 1. WARNING: The restraint system diagnostic tool must be removed and the air bag
modules reconnected when the system is reactivated to avoid non- deployment in a
collision, resulting in possible personal injury.
WARNING: The restraint system diagnostic tool is for restraint system service only.
Remove from vehicle prior to road use. Failure to remove could result in injury and
possible violation of vehicle safety standards.
Disconnect the battery ground cable. Refer to Section 414 - 01 .
2. Wait at least one minute for the backup power supply in the restraints control module (RCM) to deplete its stored energy.
3. Remove the restraint system diagnostic tool from the vehicle harness connector at the top of the Klj . 3 ba
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NOTE:
If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if
equipped) system is being serviced, the air bag system must be deactivated.
NOTE: Restraint system diagnostic tools MUST be installed under the seats in the seat side air bag (if
equipped) and safety belt pretensioner (if equipped) to floor connectors.
NOTE: Diagnostics or repairs are not to be performed on a seat equipped with a seat side air bag with
the seat in the vehicle. Prior to attempting to diagnose or repair a seat concern when equipped with a
seat side air bag, the seat must be removed from the vehicle and the restraint system diagnostic tools
must be installed in the seat side air bag electrical connectors. The restraint system diagnostic
tools must be removed prior to operating the vehicle over the road.
NOTE: After diagnosing or repairing an SRS, the restraint system diagnostic tools must be
removed before operating the vehicle over the road.
NOTE: After diagnosing or repairing a seat system, the restraint system diagnostic tools must be
removed before operating the vehicle over the road.
NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the
customer.
1. WARNING: To avoid accidental deployment and possible personal injury, the
backup power supply must be depleted before repairing or replacing any front or side air
bag supplemental restraint system (SRS) components and before servicing, replacing,
adjusting or striking components near the front or side air bag sensors, such as doors,
instrument panel, console, door latches, strikers, seats and hood latches.
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 and wait at least one minute. For additional information,
refer to Section 414 - 01 .
2. Remove the steering column opening lower finish panel. 1. Remove the screws.
2. Pull out to release the retaining clips and remove the steering column opening lower finish panel.
3. Remove the steering column opening lower reinforcement. 1. Remove the bolts.
2. Remove the steering column opening lower reinforcement. Klj . 2 ba
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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
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5. Install the two steering wheel back cover plugs.
6. Connect the battery ground cable. For additional information, refer to
Section 414 - 01 .
7. With the restraint system diagnostic tools still installed at the remaining 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.
8. WARNING: To avoid accidental deployment and possible personal injury, the
backup power supply must be depleted before repairing or replacing any front or side air
bag supplemental restraint system (SRS) components and before servicing, replacing,
adjusting or striking components near the front or side air bag sensors, such as doors,
instrument panel, console, door latches, strikers, seats and hood latches.
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 and wait at least one minute. For additional information,
refer to Section 414 - 01 .
9. Restore the vehicle to operating condition. 1. 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.
Reactivate 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. Klj . 5 ba
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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 back cover plugs.
3. Remove the two driver air bag module retaining bolts.
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
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