2003 FORD MUSTANG transmission

12, circuit 33 (WH/PK) and the starter motor relay pin 86, circuit
33 (WH/PK).
z Is the resistance less than 5 ohms? B4 CHECK DIGITAL TRANSMISSION RANGE (TR) SENSOR
ADJUSTMENT z
Carry out the digital TR sensor adjustment. Refer to Section 307 - 01 .
z Is the digital TR sensor adjusted correctly? Yes
INSTALL a new digital
TR sensor. TEST the
system for normal
operation.
No
ADJUST the digital TR
as necessary. TEST the
system for normal
operation.
B5 CHECK CIRCUIT 32 (RD/LB) FOR VOLTAGE AT THE CLUTCH
SWITCH OR JUMPER z
Key in OFF position.
z Disconnect: Clutch Pedal Switch C255.
z Key in START position.
z Measure the voltage between the clutch pedal switch C255 pin
2, circuit 32 (RD/LB) and ground while holding the key in the
START position.
z Is the voltage greater than 10 volts? Yes
GO to
B6 .
No
GO to B7 .
B6 CHECK CIRCUIT 33 (WH/PK)/32 (RD/LB) FOR OPEN
z
Key in OFF position.
z Measure the resistance between the clutch pedal switch C255
pin 1, circuit 33 (WH/PK)/32 (RD/LB) and the starter motor relay
pin 86, circuit 33 (WH/PK)/32 (RD/LB).
z Is the resistance less than 5 ohms? Yes
INSTALL a new clutch
pedal switch. TEST the
system for normal
operation.
No
REPAIR circuit 33
(WH/PK)/32 (RD/LB).
TEST the system for
normal operation.
B7 CHECK FOR VOLTAGE AT FUSE 6
z
Key in OFF position.
z Disconnect: Fuse #6.
z Key in START position. Yes
REPAIR circuit 32
(RD/LB). TEST the Klj . 5 ba
112003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

Component Tests
Starter Motor —Voltage Drop Test
WARNING: When servicing starter motor or carrying out other underhood work in the
vicinity of the starter motor, be aware that the heavy gauge battery input lead at the starter
solenoid is "electrically hot" at all times. A protective cap or boot is provided over this terminal
that must be installed after servicing. Be sure to disconnect the battery negative cable before
servicing the starter. Failure to follow these instructions may result in personal injury.
WARNING: When using a remote starter switch or jumper wire, be sure the ignition switch
is in the OFF position and the transmission is in PARK (A/T) or Neutral (M/T) with the parking
brake control fully applied.
Always make the Digital Multimeter connections at the component terminal rather than at the wiring
end connector. Making a connection at the wiring end connector could result in false readings because
the meter will not pick up a high resistance between the wiring connector and the component.
Starter Motor— Motor Feed Circuit
1. Make sure the battery is fully charged. Perform a battery load test. For additional information, refer to Section 414 - 00 .
2. Disconnect the inertia fuel shut off (IFS) switch.
3. Connect a remote starter switch between the starter solenoid S- terminal and the battery positive
(+) terminal.
4. Connect the Digital Multimeter positive lead to the battery positive (+) post. Connect negative lead to the starter solenoid M- terminal. brackets for cracks.
z Check the starter motor mounting
bolts for looseness.
z Is the starter motor mounted
correctly? GO to
D2 .
No
REINSTALL the starter motor correctly. REFER to
Starter Motor — 3.8L or
Starter Motor — 4.6L in this
section. D2 INSPECT THE STARTER MOTOR
z
Remove the starter motor; refer to
Starter Motor — 3.8L or
Starter Motor — 4.6L in this section.
z Inspect the starter motor for
damage.
z Is the starter motor damaged? Yes
INSTALL a new starter motor. REFER to
Starter Motor — 3.8L or
Starter Motor — 4.6L in this section.
TEST the system for normal operation.
No
CHECK the starter drive. REFER to Component
Tests, Starter Drive Test in this section. INSTALL a
new starter motor. TEST the system for normal
operation. Klj . 8 ba
112003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

are mandatory when proceeding through the following drive cycle.
7. NOTE: This step allows engine warm- up and provides intake air temperature (IAT) input to the
PCM.
Idle the vehicle for 15 seconds. Drive at 64 km/h (40 mph) until the ECT is at least 76.7°C (170°
F).
8. Is IAT above 4.4°C (40°F) and below 37.8°C (100°F)? If not, continue with the following steps but note that the EVAP Monitor Bypass portion of the drive cycle (Step 13) will be required to
bypass the EVAP monitor and clear the P1000.
9. NOTE: This step executes the heated oxygen sensor (HO2S) monitor.
Cruise at 64 km/h (40 mph) for 60 seconds.
10. NOTE: This executes the EVAP monitor if IAT is above 4.4°C (40°F) and below 37.8°C (100°F).
NOTE: To initiate the monitor, TP MODE should equal PT, EVAPDC must be greater than 75%,
and FLI must be between 15 and 85%.
NOTE: Avoid sharp turns and hills.
Cruise at 72 to 104 km/h (45 to 65 mph) for 10 minutes.
11. NOTE: This step executes the ISC portion of the Secondary Air/CCM.
Bring the vehicle to a stop. Idle with the transmission in DRIVE (for automatic transmission) or
NEUTRAL (for manual transmission) for two minutes.
Pending Code and EVAP Monitor Bypass Check
12. NOTE: This determines if a pending code is preventing the clearing of P1000.
NOTE: If the EVAP monitor is not complete and IAT was below 4.4°C (40°F) or above 37.8°C
(100°F) temperature range in Step 8, or the altitude is above 2,438 meters (8,000 feet), the
EVAP Monitor Bypass (Step 13) must be carried out.
Using the scan tool, check for pending codes. Conduct normal repair procedures for any
pending code concerns. Rerun any incomplete monitor.
EVAP Monitor Bypass
13. NOTE: This allows the bypass counter to increment to two.
NOTE: Do not repeat Step 4.
Park the vehicle for a minimum of eight hours. Repeat Steps 5 through 12. Klj . 2 ba
32003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

SPECIFICATIONS
a
MERCON® V is not interchangeable at this time with the current MERCON® fluids. Check the
transmission fluid level indicator to determine the correct fluid and refer to the Workshop/Owner
publication to determine the correct service interval for the specific vehicle. SECTION 307-
01: Automatic Transaxle/Transmission 2003 Mustang Workshop Manual General Specifications
Item Specification
Fluid
a Motorcraft MERCON® V Transmission Fluid XT
-5-QM MERCON®
V Fluid Capacities
3.8L engine 13.2L (13.9 quarts)
4.6L engine 12.0L (12.8 quarts)
Fluid Filter
Inline Transmission Fluid Filter Kit XC3Z-
7B155- AA Inline Transmission Fluid Filter XC3Z-
7B155- BA Lubricant
Ford Multi-Purpose Grease D0AZ-19584-
AA ESB-
M1C93- B
Torque Converter End Play Item Specification
New or remanufactured 0.355-
1.04 mm (0.014- 0.074 in) Used 0.355-
1.87 mm (0.014- 0.074 in)
Band and Clutch Application Chart Gear Overdrive
Band Low
Reverse Band Forward
Clutch Direct
Clutch Interm
Friction Clutch Reverse
Clutch Interm
One-Way
Clutch Planetary
One- Way
Clutch 1st Gear
Manual Low A A H
2nd Gear
Manual Low A A A H
1st Gear —
(D)
(Overdrive) A H
2nd Gear —
(
D)
(Overdrive) A A H
3rd Gear —
(
D)
(Overdrive) A A A O/R
4th Gear —
(
D) A A A O/R Klj . 1 ba
62003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_2748/S3B~us~en~ ...

Clearance 41.7322-42.5958 1.643-1.677
Selective steel plate 1.702-
1.803 0.067-0.071
1.956-
2.057 0.077-0.081
2.210-
2.311 0.087-0.091
2.464-
2.565 0.097-0.101
Torque Specifications Description Nm lb-
ft lb-
in Rear transmission support crossmember bolts 55 40 —
Rear insulator bolts 80 59 —
Extension housing bolts 28 21 —
Transmission fluid pan bolts 14 10 —
Front pump bolts 27 20 —
Front pump support bolts 23 17 —
Harness electrical connector bolt 5 — 44
Inspection cover bolts 35 26 —
Main control valve body bolts 10 — 89
Main control valve body cover plate bolts 10 — 89
Main control valve body separator plate bolts 10 — 89
Manual lever shaft nut 33 24 —
Manual lever shaft outer nut 33 24 —
Fluid cooler line case fittings 21 15 —
Pressure tap plugs 12 9 —
Rear driveshaft bolts 112 83 —
Starter bolts 25 18 —
TCC solenoid bolt 10 — 89
Torque converter drain plug 12 9 —
Torque converter nuts 37 27 —
Digital transmission range (TR) sensor bolts 9 — 80
Transmission bell housing bolts 47 35 —
Vehicle speed sensor (VSS) plug bolt 9 — 80
Output shaft speed (OSS) sensor bolt 12 9 —
Starter B+ cable 11 8 —
Exhaust manifold bolts 40 30 —
Exhaust pipe bolts 40 30 —
Transmission vent tube 12 9 —
Manual control valve detent lever spring bolt 10 — 89
Cooler tube nut to case fitting 18 13 —
Rear differential retaining nuts (front) 90 66 —
Rear differential retaining bolts and nuts (rear) 70 52 — Klj . 5 ba
62003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_2748/S3B~us~en~ ...

Transmission linkage 23 17 —
Shift cable bracket 14 10 —
Transmission test plate bolts 10 — 89 Klj . 6 ba
62003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_2748/S3B~us~en~ ...

DESCRIPTION AND OPERATION
Transmission Description
The 4R70W has the following features:
zWide ratio gears
z Four speeds
z Rear wheel drive
z Automatic
z Electronic shift
z Torque converter clutch control
z Line pressure controls
The transmission uses Ravigneaux- style double-pinion gearset with two bands, one one- way roller
clutch, one mechanical diode and four friction clutches to produce four forward gears and Reverse.
4R70W Automatic Transmission SECTION 307-
01: Automatic Transaxle/Transmission 2003 Mustang Workshop Manual Klj . 1 ba
12003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_2748/S3B~us~en~ ...

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
12003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_2748/S3B~us~en~ ...