2007 FORD FIESTA transmission oil

Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
Transmission (AW81-40)
DESCRIPTION AND OPERATION
The TCC is engaged depending on the current
driving situation when the selector lever is in
I position "D" and 3rd or 4th gear is engaged. When
4th gear is disabled
(OID Off) the TCC is
engaged in 3rd gear depending on the current
driving situation.
Fluid pump and stator shaft
Item Description It sucks up transmission fluid from the oil pan,
1
2
3
2006.0 Fiesta 1212006 G380521 en
Fluid pump housing
4 builds
up the oil pressure and then supplies it under
high pressure to the main control body.
Inner rotor, fluid pump
Outer rotor, fluid pump The
fluid pump is driven by the crankshaft via the
torque converter housing.
transmission housing.
The fluid pump is a G-rotor oil pump.
The stator shaft is bolted to the fluid pump. It
engages via teeth in the stator of the torque
converter and acts as a support for the latter.
Stator
shaft The
fluid pump housing is bolted to the
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
Transmission
(AW81-40)
DESCRIPTION AND OPERATION
Fluid circuit
Item Description
I 1 I Transmission control unit
1 2 1 Solenoid valves and main control body I
1 3 I Clutches and brakes I
1 4 1 Planetary gearset
1 5 1 Fluid pump I
1 6 1Oil pan I
1 7 1 Fluid cooler I
Item Description
1 8 I Torque converter I
I A I Electric actuation of the solenoid valves I
B Actuating pressure of the clutches and
1 lbrakes
I C ITo the oil pan I
I D I From the oil pan I
I E I Fluid pump pressure I
2006.0 Fiesta 121~006 ~380521 en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 -39 Transmission (AW81-40) 307-01 -39
DESCRIPTION AND OPERATION
TFT sensor Overdrive switch
The TFT sensor is located in the oil pan on the
main control body and is part of the transmission
wiring harness.
It measures the current transmission fluid
temperature and sends the signal to the
transmission control unit.
The transmission control unit uses this signal for:
Cold start mode,
Engagement of the TCC,
Shift timing adaptation during upshifts,
' , Shift timing adaptation during shifts from 3rd to
4th gear,
Shift timing adaptation during shifts from 4th to
3rd gear,
Overheating protection mode.
Consequences of signal failure:
NoTCC,
no shift timing adaptation,
no 4th gear. The overdrive switch
is located on the selector
lever.
It allows the driver to suppress or enable gearshifts
into 4th gear when
"D" is selected.
The signal from the overdrive switch is transmitted
to the transmission control unit.
When gearshifts into 4th gear are suppressed, the
transmission control unit sends a corresponding
signal via the CAN
databus to the instrument
cluster. The instrument cluster then actuates the
overdrive indicator lamp.
Consequences of signal failure:
no suppression of gearshifts into 4th gear.
2006.0 Fiesta 1212006 G380530en
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Automatic TransmissionlTransaxle -
Vehicles With: 4-Speed Automatic
307-01 -48 Transmission (AW81-40) 307-01 -48
DIAGNOSIS AND TESTING
Stall Speed Test
This test checks the operation of the following
components:
1
Test Results
Lower than specification in 'Dl (DRIVE) and 'R'
(REVERSE)
Lower than specification in
'Dl (DRIVE)
Lower than specification in
'R' (REVERSE)
torque converter
forward clutch
low one way clutch assembly
engine performance
Possible Source
Pressure control solenoid inoperative or open wire
harness.
Pressure regulator valve sticking.
Worn oil pump.
Oil strainer blocked.
Fluid leak from each clutch hydraulic circuit.
Drive hydraulic circuit failure.
Forward clutch failure.
Reverse hydraulic circuit failure. Reverse clutch failure.
First and reverse brake failure.
WARNINGS:
A Do not maintain wide open throttle (WOT)
in any range for more than five seconds.
A If the engine speed (rpm) recorded by the
tachometer exceeds maximum specified
rpm, release the accelerator pedal
immediately. Clutch or band slippage is
indicated.
N0TE:The stall speed test should be carried out
with the engine and transaxle at normal operating
temperatures (50°C to 80°C).
A Apply the parking brake firmly while N0TE:Prolonged use of this procedure may set
carrying out each stall test. DTC PO71 2. After carrying out the stall speed test,
A Apply the foot brake firmly while carrying run the OBD test and clear the DTCs.
out each stall test. I. Connect a tachometer to the engine.
CAUTIONS:
A Always carry out the line pressure test
before carrying out the stall speed test. If
the line pressure is low at idle, do not carry
out the stall speed test or further transaxle
damage will occur.
A After testing each of the following ranges
'D'
(DRIVE) and 'R' (REVERSE), move the
selector lever to
'N' (NEUTRAL) and run
the engine at 1000 rpm for approximately
one minute to allow the torque converter
to cool.
2. Press the accelerator pedal to the floor WOT in
each selected range. Record the rpm reached
in each selected range and refer to the stall
speed chart.
3. If the stall speed is not within specification, refer
to the stall speed diagnosis chart.
Stall S~eed Chart
I Engine 1.6L I Speed (rpm) I
I 'Dl (DRIVE) I 2500 2 150 1
'R' (REVERSE) 2420 +, 150 -
Stall
Speed Diagnosis Chart
2006.0 Fiesta 1212006 G371498en
Test Results
Lower than specification in ID' (DRIVE) and 'R'
(REVERSE)
Possible Source
Low engine power.
Torque converter one-way clutch failure.
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 49 Transmission (AW81-40) 307-01 -49
DIAGNOSIS AND TESTING

Test Results
Higher than specification in 'Dl (DRIVE)
Higher than specification in
'R' (REVERSE)
Lower than specification in 'D' (DRIVE)
Lower than specification in
'R' (REVERSE)
Possible Source
Pressure control solenoid inoperative.
Pressure regulator valve sticking.
Forward clutch failure (slipping).
One-way clutch No.2 failure.
Pressure control solenoid inoperative.
Pressure regulator valve sticking.
Reverse clutch failure (slipping).
First and reverse brake failure (slipping).
Drive hydraulic circuit failure.
Forward clutch failure.
Pressure control solenoid inoperative.
Pressure regulator valve sticking.
Worn oil pump.
Oil strainer blocked.
Fluid leak from each clutch hydraulic circuit.
( Time Lag Test 1. Using a suitable stop watch, measure the time
lag three times and calculate the average time.
Time lag is the time between moving the selector Record the
time lag and refer to the time lag
lever from
IN' (NEUTRAL) to ID' (DRIVE) or IN' chart.
(NEUTRAL) to 'R' (REVERSE). With the parking 2. If the time lag is not within specification, refer
brake applied the vehicle must not move if the
to the time lag diagnosis chart.
selector lever is moved from 'N' (NEUTRAL) to
ID'
(DRIVE) or 'N' (NEUTRAL) to 'R' (REVERSE). Time Lag Chart
Drive is engaged when the vehicle starts to rise.
A WARN1NG:Apply the parking brake firmly IN' (NEUTRAL) to ID' while carrying out each test. 1 (DRIVE)
(NEUTRAL) and run the engine at 1000 rpm
for approximately
1 minute to allow the
torque converter to cool.
less than 1.0 seconds
CAUTI0N:After testing each of the
following ranges
'D' (DRIVE) and 'R'
Range
I Lower than specification in IN' (NEUTRAL) to 'Dl I Pressure control solenoid inoperative.
Ti me
(REVERSE), move the selector lever to 'N'
'N' (NEUTRAL) to 'R'
(REVERSE)
Time Lag Diagnosis Chart
(DRIVE) less
than 1.2 seconds
Test Results
Pressure regulator valve sticking.
Forward clutch failure (slipping).
Possible Source
I Timing solenoid failure.
I I Drive hydraulic circuit failure. I
2006.0 Fiesta IZIZOO~ G371498en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 -51 Transmission (AW81-40) 307-01 -51 -
GENERAL PROCEDURES
~ransmission Fluid Level Check
( I General Equipment 5. Using WDS, check that the transmission fluid
Worldwide diagnostic system (WDS) temperature is between 50°C and 60°C.
1 6. Remove the transmission fluid level
Materials
A WARN1NG:Refer to the Material Safety Data
Sheets for the Automatic Transmission
Fluid
E-AW. Failure to follow this
instruction may result in personal injury.
Certain Transmission and Power Steering
fluids supplied to Ford contain additives
which may cause skin irritation or other
skin reactions after contact.
For additional information, refer to: Health
and Safety Precautions (1 00-00 General
Information, Description and Operation).
See
- Transmission Fluids.
1. N0TE:Make sure that the transmission is not
in emergency operation mode.
Connect the worldwide diagnostic system
(WDS) to the data link connector (DLC). indicator.
Automatic transmission
lfluid
*' AWARNING:M~~~ sure that
the parking
brake control lever is in the fully applied
position. Failure to follow this instruction
may result in personal injury.
Name
Specification
WSS-M2C924-A
Start the engine.
3. Move the transmission selector lever through
all the gear ranges, allow sufficient time for
each position to engage.
4. Move the transmission selector lever to the
"P" (PARK) position. 7.
Check the transmission fluid level and top
up with clean automatic transmission fluid
if necessary.
For additional information, refer to: Health
and Safety Precautions (1 00-00 General
Information, Description and Operation).
See
- Transmission Fluids.
Make sure that, with the transmission in the
"P" (PARK) position, the oil level is between
the "MIN" and "MAX" mark.
v v
MIN 55°C MAX A A
ELE0008136
2006.0 Fiesta 1212006 G371500en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 -66 Transmission (AW81-40) 307-01 -66
REMOVAL AND INSTALLATION
23m ACAUTION:P~~~~~~ the ball joint seal
using a soft cloth to prevent damage. Using
a suitable tire lever, detach the
left-hand halfshaft from the transaxle and
secure
it to one side.
Using the special tool, detach the right-hand
tie-rod end from the wheel knuckle.
Allow the oil to drain into a suitable container. --- --.
For additional information, refer to: Health
1. Release the tie-rod end.
and Safety Precautions
(1 00-00 General 2. Remove and discard the tie-rod end retaining
Information, Description and Operation).
nut. See
- Transmission Fluids.
Discard the snap ring.
24* &AUTION:P~~~~~~ the ball joint seal.
I I
Detach the lower arm from the wheel knuckle 26. CAUTIONS:
on both sides.
A~upport the halfshaft. The inner joint
Remove the heat shield. must
not be bent more than 18 degrees.
The outer joint must not be bent more than
45 degrees.
ADO not damage the halfshaft seal.
N0TE:Plug the transaxle to prevent oil loss or dirt
ingress.
For additional information, refer to: Health and
Safety Precautions (1 00-00 General Information,
Description and Operation).
See
- Transmission Fluids.
25. CAUTIONS:
A~upport the halfshaft. The inner joint
must not be bent more than 18 degrees.
The outer joint must not be bent more than
45 degrees.
ADO not damage the halfshaft seal.
N0TE:PIug the transaxle to prevent oil loss or dirt
ingress.
For additional information, refer to: Health and
Safety Precautions
(1 00-00 General Information,
Description and Operation).
See
- Transmission Fluids. Detach
the right-hand halfshaft and the
intermediate shaft from the transaxle and
secure
it to one side.
Discard the center bearing cap and locknuts.
Allow the oil to drain into a suitable container.
For additional information, refer to: Health
and Safety Precautions (1 00-00 General
Information, Description and Operation).
2006.0 Fiesta 1212006 G371506en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
REMOVAL AND INSTALLATION
39. Tilt the engine and transaxle assembly Check
the installation depth of the torque
forwards and insert a suitable wooden converter.
/ block. 1. Lay
a straight edge on the transaxle flange.
2. Check the installation depth between the
transaxle flange and the torque converter
centering spigot.
40. Remove the transaxle right-hand retaining
bolts.
41m ~CAUTION:M~~~ sure the torque
converter remains in the transaxle.
3m ~CAUTION:T~~ torque converter must
Using the transmission jack and remove the remain
at the correct installation depth
transaxle. during the entire installation.
N0TE:Secure the transmission with the securing
Installation strap.
N0TE:Make sure that the two locating dowels are
ACAUTION:T~~ torque converter must installed.
remain at the correct installation depth
during the entire installation.
N0TE:Before installing the bolts in the
transmission, the torque converter studs must be
aligned with the holes in the drive plate.
Install the torque converter.
Lubricate the torque converter centering
spigot with grease.
*' ACAUTION:T~~ torque converter hub must
engage fully with the oil pump drive gear.
2006.0 Fiesta 1212006 G371506en
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