Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic Transmission
(AW81-40)
DIAGNOSIS AND TESTING
Automatic Transaxle
Special Tool(s)
Hydraulic Pressure Gauge (0
- 60 bar)
307-20 1
General Equipment Worldwide
~ia~noitic System (WDS)
Inspection and Verification
1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical
or electrical damage.
Visual
lns~ection Chart
I Mechanical I Electrical I
3. If an obvious cause for an observed or reported
concern is found, correct the cause (if possible)
before proceeding to the next step.
4. If the cause is not visually evident, verify the
symptom and refer to the Diagnostic Trouble
Code Chart.
Damaged shift
mechanism
Transaxle fluid leaks
Damaged transaxle
casing
.I
- Diagnostic Trouble Code Chart
Fuse(s)
Electrical
connector(s)
Diagnostic Trouble Code Charts
Symptom Possible Sources Action
I A207 Checksum error I Transmission control module I REFER to WDS.
E516 CAN bus OFF sensor
error CAN bus.
D9OO CAN bus no communica-
tion error
PO706 Transmission range
(TR) sensor error
PO707 Transmission range
(TR) sensor circuit low input
CAN bus.
Inhibitor switch.
Inhibitor switch circuit(s).
lnhibitor switch.
lnhibitor switch circuit(s).
PO712 Transmission fluid
temperature circuit
- low input
REFER to WDS.
REFER to WDS.
3 Transmission fluid
temperature circuit
- high input
2006.0 Fiesta 1212006 G371498en
Transmission fluid temperature
sensor.
Circuit(s).
PO71 7 lnput speed sensor
circuit no signal
REFER to WDS.
Transmission fluid temperature
sensor.
e Circuit(s).
lnput speed sensor.
Circuit(s).
REFER to WDS.
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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: CSpeed Automatic
307-01 -52 Transmission (AW81-40) 307-01 -52
GENERAL PROCEDURES
8. Install the transmission fluid level indicator.
9. Switch the engine off.
10. Disconnect the WDS from the DLC.
2006.0 Fiesta 1212006 G371500en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 -53 Transmission (AW81-40)
307-01 -53
GENERAL PROCEDURES
Transmission Fluid Drain and Refill
I I Name Specification
Discard the drain plug seal.
1 Materials
--
A WARNING: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.
I I
Automatic transmission
lfluid-
For additional information, refer to: Health 3, NOTE:lnstall a new drain plug seal. and Safety Precautions (1 00-00 General
Information, Description and Operation).
N0TE:Clean the drain plug thread.
See - Transmission Fluids.
Install the drain plug.
1. Raise and support the vehicle.
WSS-M2C924-A
For additional information, refer to: Jacking
(1 00-02 Jacking and Lifting, Description
and Operation)
I Lifting (100-02 Jacking and Lifting,
Description and Operation).
2. N0TE:lf an internal transaxle concern is
suspected, drain the fluid through a paper
filter. A small amount of metal or friction
particles may be found from normal wear.
However,
if excessive metal or friction
particles are present, a detailed inspection
of the transaxle will be required.
Drain the transaxle.
4. Lower the vehicle.
For additional information, refer to: Health
5. Remove the transmission fluid level
and Safety Precautions
(1 00-00 General indicator.
Information, Description and Operation).
See
- Transmission Fluids.
Allow the fluid to drain into a suitable
container.
For additional information, refer to: Health
and Safety Precautions
(1 00-00 General
Information, Description and Operation).
See
- Transmission Fluids.
2006.0 Fiesta 1212006 ~371501 en
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Automatic TransmissionlTransaxle -
Vehicles With: 4-Speed Automatic
307-01 -54 Transmission
(AW81-40) 307-01 -54
GENERAL PROCEDURES
6. Fill the transaxle with automatic transmission
fluid.
For additional information, refer to:
Specifications (307-01 Automatic
Transmission/Transaxle - Vehicles With:
4Speed Automatic Transmission
(AW81-40), Specifications).
7. Check the transmission fluid level.
For additional information, refer to:
Transmission Fluid Level Check (307-01
Automatic
Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
Transmission
(AW81-40), General
Procedures).
2006.0 Fiesta 1212006 G371501 en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 -58 Transmission
(AW81-40) 307-01 -58
IN-VEHICLE REPAIR
Halfshaft Seal LH
I. 1.NOTE:lnstall a new halfshaft seal.
Special
Tool(s) Discard
the seal.
Removal
Installer, Front Wheel Hub
Seal
204-066 (1 4-028)
Remover, Halfshaft Seal
308-208 (1 6-074)
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.
Installation
For additional information, refer to: Health
and Safety Precautions
(1 00-00 General
Information, Description and Operation).
See
- Transmission Fluids. Using the
special tool, install the halfshaft
seal.
1. Remove the left-hand halfshaft.
2. Install the left-hand halfshaft.
For additional information, refer to: Front
Halfshaft LH
(205-04 Front Drive Halfshafts, For additional
information, refer to: Front
Removal and lnstallation). Halfshaft
LH (205-04 Front Drive Halfshafts,
Removal and lnstallation).
2. Using the special tool, remove the halfshaft
seal.
Allow the fluid to drain into a suitable
container.
For additional information, refer to: Health
and Safety Precautions
(1 00-00 General
Information, Description and Operation).
See
- Transmission Fluids.
-
2006.0 Fiesta 1212006 G371503en
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