2003 FORD MUSTANG Door

REMOVAL AND INSTALLATION
Powertrain Control Module (PCM)
Removal
1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Remove the RH front door scuff plate.
3. Remove the RH cowl side trim panel. zRemove the pin- type retainer.
z Remove the panel.
4. Disconnect the connectors and position them aside.
5. Remove the bolts and the bracket.
SECTION 303-
14: Electronic Engine Controls 2003 Mustang Workshop Manual Klj . 1 ba
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DESCRIPTION AND OPERATION
Identification Tags
All vehicles are equipped with a Vehicle Certification Label, located on the driver side door lock post.
For correct transmission identification, refer to the code in the space marked TR.
For model, service ID level or build date information, refer to the transmission service ID tag located on
the transmission case.
Identification Tag
SECTION 307-
01: Automatic Transaxle/Transmission 2003 Mustang Workshop Manual Item Part Number Description
1 — Model number
2 — Assembly number
3 — Serial number
4 — Model and serial number Klj . 1 ba
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IN-
VEHICLE REPAIR
Fluid Pan, Gasket and Filter
1. Normal maintenance requires periodic automatic transmission fluid changes. If a major repair, such as a clutch, band, bearing, etc., is required, the automatic transmission will also have to be
removed for repair. At this time, the torque converter, transmission cooler and tubes must be
thoroughly flushed to remove any dirt. The transmission fluid needs to be changed if evidence
of fluid contamination is found. When used under continuous or severe conditions, the
transmission and torque converter should be drained and refilled with fluid as specified.
2. CAUTION: Do not use any supplemental transmission fluid additives or cleaning
agents. The use of these products could cause internal transmission components to fail;
this will effect the operation of the transmission.
CAUTION: Use of a fluid other than specified could result in transmission failure.
Refer to the vehicle certification label affixed to the LH front door lock face panel or door pillar
for the transmission code.
3. When filling a dry transmission and torque converter, refer to General Specifications chart in this section for capacity. Check the fluid level.
Removal
1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Raise and support the vehicle. For additional information, refer to Section 100 - 02 .
3. Place a drain pan under the transmission fluid pan.
4. Drain transmission fluid. zLoosen the transmission fluid pan bolts and allow fluid to drain. After fluid is drained
remove the bolts.
SECTION 307-
01: Automatic Transaxle/Transmission 2003 Mustang Workshop Manual Material
Item Specification
MERCON® V Automatic
Transmission Fluid
XT
-5-QM, XT -5-DM MERCON® V Klj . 1 ba
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System Air Flow Description
MAX A/C
When MAX A/C is selected:
zThe air inlet door vacuum control motor is at full vacuum, closing off outside air and admitting
only recirculated air.
z The panel/defrost door vacuum control motor is at full vacuum and the panel/floor door vacuum
control motor is at no vacuum, directing airflow to the instrument panel A/C registers. A small
amount of airflow from the side window demisters will be present.
z Blended air temperature is available.
z The A/C compressor will operate if the outside temperature is above approximately 6°C (43°F).
z The blower motor is on.
NORM A/C
When NORM A/C is selected:
zThe air inlet door vacuum control motor is at no vacuum, admitting only outside air into the
passenger compartment. 9 19D990 A/C evaporator core orifice
10 19860 A/C evaporator core
11 — Low pressure vapor
12 — High pressure vapor
13 — Low pressure liquid
14 — High pressure liquid Klj . 6 ba
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z
The panel/defrost door vacuum control motor is at full vacuum and the panel/floor door vacuum
control motor is at no vacuum, directing airflow to the instrument panel A/C registers. A small
amount of airflow from the side window demisters will be present.
z Blended air temperature is available.
z The A/C compressor will operate if the outside air temperature is above approximately 6°C (43°
F).
z The blower motor is on.
PANEL
When PANEL is selected:
zThe air inlet door vacuum control motor is at no vacuum, admitting only outside air into the
passenger compartment.
z The panel/defrost door vacuum control motor is at full vacuum and the panel/floor door vacuum
control motor is at no vacuum, directing airflow to the instrument panel A/C registers. A small
amount of airflow from the side window demisters will be present.
z The temperature can be adjusted to heat the air, but the air cannot be cooled below the outside
temperature.
z The A/C compressor will not operate.
z The blower motor is on.
OFF
When OFF is selected:
zThe air inlet door vacuum control motor is at full vacuum, closing off outside air from entering
the passenger compartment.
z The panel/floor door vacuum control motor is at full vacuum and the panel/defrost door vacuum Klj . 7 ba
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control motor is at no vacuum, closing off airflow to the defrost duct, side window demisters,
floor duct and instrument panel A/C registers.
z The A/C compressor will not operate.
z The blower motor is off.
FLOOR
When FLOOR is selected:
zThe air inlet door vacuum control motor is at no vacuum, admitting only outside air into the
passenger compartment.
z The panel/floor door vacuum control motor is at full vacuum and the panel/defrost door vacuum
control motor is at no vacuum, directing airflow to the floor duct. A small amount of airflow from
the side window demisters will be present.
z The temperature can be adjusted to heat the air, but the air cannot be cooled below the outside
temperature.
z The A/C compressor will not operate.
z The blower motor is on.
FLOOR/DEFROST
When FLOOR/DEFROST is selected:
zThe air inlet door vacuum control motor is at no vacuum, admitting only outside air into the
passenger compartment.
z The panel/floor door vacuum control motor is at partial vacuum and the panel/defrost door
vacuum control motor is at no vacuum, directing airflow to the floor duct, the defroster duct, and
the side window demisters.
z The temperature can be adjusted to heat or cool the air below the outside temperature. Klj . 8 ba
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z
The A/C compressor will operate if the outside air temperature is above approximately 6°C (43°
F).
z The blower motor is on.
DEFROST
When DEFROST is selected:
zThe air inlet door vacuum control motor is at no vacuum, admitting only outside air into the
passenger compartment.
z The panel/floor door and panel/defrost door vacuum control motors are at no vacuum, directing
airflow to the defroster duct and the side window demisters.
z The temperature can be adjusted to heat or cool the air below the outside temperature.
z The A/C compressor will operate if the outside air temperature is above approximately 6°C (43°
F).
z The blower motor is on. Electrical Components Klj . 9 ba
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Item Part Number Description
1 18A318 Vacuum control motor, panel/defrost door
2 18A478 Panel/defrost door (full vacuum position)
3 — Defrost airflow
4 — Side window demister airflow
5 18B545 Temperature blend door (full heat position)
6 19860 A/C evaporator core
7 19A813 Air inlet door (full vacuum position)
8 — Outside air inlet
9 18A318 Vacuum control motor—
air inlet door 10 — Recirculated air inlet
11 19805 Blower motor
12 — Vacuum from the engine intake manifold
13 19A563 A/C vacuum check valve
14 19A566 A/C vacuum reservoir tank and bracket
15 19B888 A/C-
heater function selector switch Klj . 3 ba
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