wiring FORD MUSTANG 2003 Workshop Manual

DESCRIPTION AND OPERATION
External Controls
The transmission shift cable transfers the transmission operating mode from the gearshift lever to the
automatic transmission (7003). The indicated position of the transmission floor mounted selector lever
is transferred to the transmission through the cable and down to the manual control lever on the
transmission.
Shift Interlock System
The brake/shift interlock mechanism is used on vehicles equipped with an automatic transmission.
This system is used to prevent shifting from PARK unless the brake pedal is depressed. The
brake/shift interlock system consists of an actuator attached to the key interlock assembly and
necessary wiring. The shift lock actuator is energized when the ignition switch is turned to the run
position, locking the floor mounted transmission range selector lever in the PARK position. When the
brake pedal is depressed, the shift lock actuator is deactivated and the floor mounted transmission
range selector lever can be moved out of the PARK position.
Transmission Control Switch (TCS)
The transmission control switch (TCS) is a momentary contact switch that is located on the floor
mounted transmission range selector lever. Pushing the TCS will either disengage or engage the
overdrive function of the automatic transmission. If the OVERDRIVE is disengaged, the word O/D OFF
will illuminate on the instrument cluster.
SECTION 307-
05: Automatic Transaxle/Transmission External Controls 2003 Mustang Workshop Manual Klj . 1 ba
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DIAGNOSIS AND TESTING
External Controls
Refer to Wiring Diagrams Cell
37 , Shift Lock for schematic and connector information.
Refer to Wiring Diagrams Cell 29 , Transmission Control for schematic and connector information.
Inspection and Verification 1. Verify the customer concern by operating the transmission external control.
2. Visually inspect for obvious signs of mechanical and electrical damage; refer to the following chart:
3. If the concern is not visually evident, determine the symptom. GO to Symptom Chart .
Symptom Chart SECTION 307-
05: Automatic Transaxle/Transmission External Controls 2003 Mustang Workshop Manual Special Tool(s)
73 Digital Multimeter
105-
R0051 or equivalent
Visual Inspection Chart Mechanical Electrical
z
Shift control linkage binding.
z Shift lock actuator.
z Shift control cable.
z Interlock cable. z
Circuitry.
z Central junction box (CJB) fuse:
„17 (15A)
„ 28 (15A)
„ 35 (15A)
z Brake pedal position (BPP) switch.
z Wiring harness.
z Loose or corroded connections.
z Bulb.
SYMPTOM CHART Condition
Possible Sources Action
z The shift interlock
system does not
release/lock correctly z
Circuitry.
z CJB Fuse 17 (15A)
or Fuse 35 (15A).
z Shift lock actuator.
z Brake pedal position
(BPP) switch. z
Go To Pinpoint Test A . Klj . 1 ba
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6. Disconnect the brake pedal-
to-power brake booster push rod.
1. Remove the self- locking pin.
2. Remove the BPP switch from the brake master cylinder push rod.
3. Remove the brake master cylinder push rod spacers (2B129).
4. Remove the brake master cylinder push rod bushing (2474).
7. Disconnect the clutch pedal position (CPP) switch electrical connector.
8. Disconnect the deactivation switch connector from the wiring harness. Klj . 2 ba
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13. Disconnect the reversing lamp switch electrical connector. Disconnect the wiring harness from
the transmission.
14. Remove the starter motor (11001). For additional information, refer to Section 303 - 06 .
15. Disconnect the output shaft speed sensor (OSS) electrical connector. Disconnect the wiring harness from the transmission.
16. Remove the bolt and the clutch release lever cover. Klj . 3 ba
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Remove the driveshaft. For additional information, refer to
Section 205 - 01 .
8. Disconnect the reversing lamp switch electrical connector. Disconnect the wiring harness from the transmission.
9. Remove the starter motor. For additional information, refer to Section 303 - 06 .
10. Remove the bolts.
11. Remove the starter solenoid nuts and position the wires aside. Klj . 2 ba
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12. Remove the starter motor.
13. Disconnect the OSS sensor electrical connector. Disconnect the wiring harness from the
transmission.
14. Remove the bolt and the clutch release lever cover.
15. CAUTION: To prevent component damage, do not depress the clutch pedal with the
transmission removed.
Disengage the clutch release cable from the clutch release fork.
16. Remove the clutch cable retainer and remove the clutch cable from the transmission. Klj . 3 ba
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14. Disengage the clutch release cable from the clutch release fork.
15. Disconnect the wiring harness from the transmission.
16. Disconnect the output shaft speed (OSS) sensor electrical connector.
17. Disconnect the reverse lamp electrical connector. Klj . 4 ba
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4. Connect the wiring harness to the transmission.
5. Connect the clutch release cable to the clutch release fork.
6. Install the clutch release lever cover and bolt.
7. Install the transmission crossmember and the bolts. Klj . 2 ba
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DESCRIPTION AND OPERATION
Exhaust System
WARNING: The normal operating temperature of the exhaust system is very high. Never
attempt to repair any part of the system until it has cooled. Be especially careful when working
around the three way catalytic converter. The temperature of the three way catalytic converter
rises to a high level after only a few minutes of engine operation.
CAUTION: When repairing exhaust system or removing exhaust components, disconnect
all heated oxygen sensors (HO2S) at the wiring connectors to prevent damage to the heated
oxygen sensors and wiring harness. For additional information, refer to Section 303 - 14 for
location of the heated oxygen sensors.
The exhaust system:
zcontains dual three- way catalytic converters.
z has a crossover pipe downstream of the three way catalytic converters (4.6L).
z has two upstream heated oxygen sensors mounted before the three- way catalytic converters.
z the production muffler and tailpipe assembly is a one- piece design exhaust system.
Exhaust System — 3.8L Exhaust System — 4.6L (2V) SECTION 309-
00: Exhaust System 2003 Mustang Workshop Manual Item Part Number Description
1 5F250 Dual converter assembly
2 5D255 Insulator bracket assembly
3 5A246 Insulator bracket, (tailpipe)
4 5D255 Insulator bracket assembly
5 5232 Muffler Klj . 1 ba
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REMOVAL AND INSTALLATION
Dual Converter Y-
Pipe —3.8L
Removal
NOTE: The RH and LH catalytic converters are serviceable separately.
1. Raise and support the vehicle. For additional information, refer to Section 100 - 02 .
2. CAUTION: When repairing the exhaust system or removing exhaust components,
disconnect all heated oxygen sensors (HO2S) (9F472) and catalyst monitor sensors at
the wiring connectors to prevent damage to the sensors and wiring harnesses.
Disconnect the RH and LH HO2S connectors.
3. Disconnect the RH and LH catalyst monitor sensor connectors.
4. Remove the dual converter assembly nuts.
SECTION 309-
00: Exhaust System 2003 Mustang Workshop Manual Klj . 1 ba
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