2007 FORD FIESTA Electrical

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 Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 47 Transmission (AW81-40) 307-01 -47
DIAGNOSIS AND TESTING
Symptom Possible Sources Action
'
U2516 CAN bus off transmit
error
I 5750 Throttle open malfunction 1 . CAN bus. 1. REFER to WDS. I
CAN bus.
U1900 CAN Communication
bus fault error
Line Pressure Test
C1750 Accelerator pedal posi-
tion signal malfunction
. CAN bus.
CAUTIONS:
A Carry out the line pressure test before
carrying out the stall speed test.
If line
pressure is low at idle, do not carry out the
stall speed test or further transaxle damage
will occur.
Accelerator pedal position
sensor.
A Do not maintain wide open throttle (WOT)
in any range for more than five seconds.
REFER to WDS.
A After testing each of the following ranges
ID' (DRIVE) and 'R' (REVERSE)r move the 1. Connect the special tools to the line pressure selector lever to 'N' (NEUTRAL) and run
the engine at
I000 rpm for approximately test point.
i, 1 minute to allow the torque converter to 2. Start the engine and check the line pressures.
cool. Refer to the line pressure chart to determine if -- --- line pressure is within specification. N0TE:Make sure that the self test and electrical 3m If the line pressure is not within specification, repairs have been carried out, or test results may
be incorrect. refer to the
line pressure diagnosis chart.
Line Pressure Chart
Range
Idle Stall
R 0.59 - 0.68 5.88 - 6.76 1.58 - 1.83 15.88 - 18.24
Line Pressure Diagnosis Chart
I I Pressure regulator valve sticking. I
Test Results
Higher than specification in 'D' (DRIVE) and 'R'
(REVERSE)
2006.0 Fiesta 1212006 G371498en
Possible Source
Pressure control solenoid inoperative or open wire
harness.
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307101 -55 Transmission (AW81-40) 307-01 -55
IN-VEHICLE REPAIR
Transmission Range (TR) Sensor
Removal
1. Shift the transmission selector lever to the ACAUTION:H~I~ the manual shift lever
"N" (NEUTRAL) position. while loosening
or tightening the manual - -
2. Raise and support the vehicle. shift
lever locking nut to prevent rotational
torque being transmitted to the TR sensor
For additional information, refer to: Jacking
and shift mechanism.
(1
00-02 Jacking and Lifting, Description
and Operation) Remove
the manual shift lever (automatic
I Lifting (1 00-02 Jacking and Lifting, transaxle
shown removed for clarity).
Description and Operation).
3. Disconnect the transmission range (TR)
sensor electrical connector.
6. Remove the nut and locking washer
(automatic transaxle shown removed for
clarity).
4. Detach the selector lever cable from the Unbend the locking washer tangs.
manual shift lever.
1. Detach the selector lever cable from the
manual shift lever.
2. Detach the selector lever cable from the
selector lever cable bracket.
7. N0TE:The TR sensor retaining bolts can be
reused three times. Mark the retaining bolts
to indicate usage.
2006.0 Fiesta 1212006 G371502en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 -57 Transmission (AW81-40) 307-01 -57
IN-VEHICLE REPAIR
A~old the manual shift lever while 8. Lower the vehicle.
' tightening the manual shift lever locking nut 9. Check the selector lever cable adjustment to prevent rotational torque being by
moving the transmission selector lever
transmitted to the
TR sensor and shift through
all gear ranges.
mechanism.
Install the manual shift lever (automatic
transaxle shown removed for clarity).
6. Connect the TR sensor electrical connector.
7. Attach the selector lever cable to the manual
shift lever.
1. Attach the selector lever cable to the selector
lever cable bracket.
2. Attach the selector lever cable to the manual
shift lever.
2006.0 Fiesta 1212006 G371502en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 -60 Transmission
(AW81-40) 307-01 -60
IN-VEHICLE REPAIR
Turbine Shaft Speed (TSS) Sensor
Removal
1. Disconnect the turbine shaft speed (TSS)
sensor electrical connector.
2. Remove the TSS sensor.
Installation
1. N0TE:lnspect the O-ring seal for damage.
Install
a new O-ring seal if necessary.
N0TE:Apply a light coat of petroleum jelly to the
O-ring seal before installation.
To install, reverse the removal procedure.
2006.0 Fiesta 1212006 G371549en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 -61 Transmission (AW81-40) 307-01 -61 --
IN-VEHICLE REPAIR
Vehicle Speed Sensor (VSS)
Removal
N0TE:Apply a light coat of petroleum jelly to the 1. Disconnect the vehicle speed sensor (VSS) O-ring seal before installation. electrical connector.
2. Remove the VSS heat shield.
3. Remove the VSS.
Installation
1. N0TE:lnspect the O-ring seal for damage.
Install a new O-ring seal if necessary. To
install, reverse the removal procedure.
2006.0 Fiesta 1212006 G371550en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 -62 Transmission (AW81-40) 307-01 -62
REMOVAL AND INSTALLATION
Transaxle
Special Tool(s)
I I Separator, Ball Joint
Support Bar, Engine
303-290A
Adapter for 303-290A
303-290-01 (21 -1 40-01
)
General Eaui~ment
I Securing strap I
General Equipment
Transmission jack
I Worldwide diagnostic system (WDS) I
Materials
Name S~ecification
1 Grease I WSD-MI C230-A I
Removal
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. f
1. Remove the air cleaner. \.
For additional information, refer to: Air
Cleaner - 1.25L Duratec-1 6V (Sigma)/ln4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V
(Sigma) (303-12 Intake Air Distribution and
Filtering, Removal and Installation).
2. Disconnect the powertrain control module
(PCM) electrical connector.
For
additional information, refer to:
Powertrain
Control Module (PCM) - 1.25L
Duratec-1 6V (Sigma)ll.4L Duratec-1 6V
(Sigma)ll .6L Duratec-1 6V (Sigma) (303-1 4
Electronic Engine Controls, Removal and
Installation).
3. Remove the battery tray.
For
additional information, refer to: Battery
Tray (41 4-01 Battery, Mounting and
Cables,
Removal and Installation).
2006.0 Fiesta 1212006 G371506en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
Transmission (AW81-40)
REMOVAL AND INSTALLATION
4. Loosen the strut and spring assembly top 7. Detach the ground cable from the transaxle.
mount nuts by three turns on both sides.

8. Disconnect the turbine shaft speed (TSS)
5. Detach the engine ground cable from the sensor
electrical connector.
transaxle.
9. Disconnect the transaxle breather hose.
6. Remove the transaxle upper retaining bolts.
Detach the engine wiring harness bracket
from the transaxle.
2006.0 Fiesta 1212006 G371506en
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