FORD KUGA 2011 1.G Workshop Manual

E125966
97
2
1
Description
Item
PWM- solenoid valve – TCC (SLU)
1
TCM connector 'C'
2
If the PWM solenoid valve for the TCC (SLU) fails,
the MIL is activated and the vehicle can be driven
in emergency mode 1.
PWM solenoid valve – shift pressure (SLS)
E112326
Installation position
The PWM solenoid valve for shift pressure (SLS)
is located in the valve body on the front of the
transaxle.
Function
0 0.2 1.00.80.60.4
0
0.2 1.00.80.60.4
0
0.2 1.00.80.60.40
0.2 1.00.80.60.4
E125990
1
2
G1163605en2008.50 Kuga8/2011
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— Vehicles With:
5-Speed Automatic Transaxle - AW55 AWD
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Description
Item
Hydraulic pressure
1
Average current (A)
2
The valve directly actuates the multi-plate brake
(B1) in 2nd - 4th gear as well as the clutch (C2) in
5th and reverse gear. The PWM control achieves
smooth engagement of the gears.
The hydraulic function of the valve is linear. The
hydraulic valve is controlled by means of the
varying current resulting from the current duty
cycle. The system pressure is low with a high duty
cycle, i.e. with high current intensity (approx. 1 A),
and vice versa.
Consequences of signal failure
E125991
2
1
Description
Item
PWM solenoid valve – shift pressure (SLS)
1
TCM connector 'C'
2
The shift pressure increases to the maximum value
in the event of interruptions, which leads to hard
gearshifts when shifting to another gear. The valve
is then fully open. If the PWM solenoid valve for shift pressure (SLS)
fails, the MIL is activated and the vehicle can be
driven in emergency mode 3.
PWM solenoid valve for main line pressure
(SLT)
E112327
Installation position
The PWM solenoid valve – main line pressure
(SLT) is located in the control valve assembly on
the front of the transmission.
Function
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00.2 1.0 0.80.60.4
0
0.2 1.0
0.80.60.40
0.2 1.0 0.80.60.40
0.2 1.0 0.80.60.4
E125990
1
2
Description
Item
Hydraulic pressure
1
Average current (A)
2
The PWM solenoid valve for main line pressure
(SLT) is actuated proportionally by the TCM.
The TCM evaluates the accelerator pedal position
and the current engine torque.
The main line pressure is adapted proportionally
by the TCM via the PWM solenoid valve. This
measure enables judder-free gearshifts.
The PWM solenoid valve is open when
de-energized. In the case of faults and failure of
the control system, the PWM solenoid valve
remains fully open. The maximum main line
pressure is applied.
Consequences of signal failure
E125992
2
1
Description
Item
PWM solenoid valve for main line pressure
(SLT)
1
TCM connector 'C'
2
The system pressure increases to the maximum
value in the event of interruptions, which leads to
hard gearshifts when shifting to another gear. The
valve is then fully open.
If the PWM solenoid valve – main line pressure
(SLT) fails, the MIL is activated and the vehicle can
be driven in emergency mode 1.
TCC
Installation position
The TCC is an integral component of the torque
converter.
Operation
The TCM controls the PWM via the TCC solenoid
valve for the TCC (SLU). Based on the signals for
engine speed and accelerator pedal position as
G1163605en2008.50 Kuga8/2011
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well as vehicle speed, driving comfort is improved
by linear actuation of the TCC.
Selector lever with integrated select-shift
switch module
E112332
The selector lever unit is located in the central
console. It is mechanically connected to the
transmission by a selector cable which moves the
gear selector shaft in the TR sensor.
The following components are integrated in the
selector lever assembly:
• Select-shift switch module
• Selector lever lock solenoid.
• Switch contact for selector lever position 'P'
• LED for the selector lever position display
The selector lever has the following positions:
• P: Park position
• R: Reverse gear.
• N: Neutral position
• D: Automatically shift between all gears
• S: Sport and select-shift mode (manual gearchanging)
If the selector lever is not in the 'P' position when
the vehicle is exited, a signal is transmitted to the
instrument cluster via the switch contact for selector
lever position 'P'. When the driver door is opened,
a message to move the selector lever to the 'P'
position appears in the instrument cluster and the
warning buzzer sounds. The vehicle cannot be
electrically locked if the selector lever is not moved
to the 'P' position.
G1163605en2008.50 Kuga8/2011
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Overview of the select-shift switch module
E112331
The select-shift switch module is located on the
upper trim of the selector lever unit. The module
is supplied with power by the TCM.
It uses the LIN databus to interact with the TCM,
for instance to activate the selector lever position
display.
It allows the automatic transmission gears to be
changed up and down manually via the signals of
the Hall sensors.
The select-shift switch module detects the selector
lever position 'P' and 'S' via the integrated selector
lever position sensors (Hall sensors).
A cable leading from the TCM passes directly to
the select-shift switch module and is used to control
the solenoid of the selector lever lock. The
switching solenoid receives its voltage supply
directly from the module.
In the event of a fault, a signal is transmitted to the
TCM where all DTCs are stored.
Oil pump
E68097
1
2
3
45
Description
Item
Fluid pump rotor, outer
1
Fluid pump rotor, inner
2
G1163605en2008.50 Kuga8/2011
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Description
Item
Drive
3
Intake side
4
Delivery side
5
The fluid pump operates on the principle of a
G-rotor fluid pump.
The fluid pump draws transmission fluid from the
fluid pan, builds up fluid pressure and then supplies
it to the valve body.
The fluid pump is driven by the crankshaft via the
torque converter housing.
Torque converter with TCC
E66428E66428
1
2
3
5
4
Description
Item
Torque converter housing and impeller
1
Turbine
2
TCC3
Transaxle input shaft
4
Stator with roller-type one-way clutch
5 The torque converter transmits the output torque
hydraulically from the engine to the transaxle input
shaft.
The stator increases the torque up to the clutch
take-up point. At the clutch take-up point, the speed
difference between impeller and turbine is
approximately 90 %.
In order to improve the efficiency, the torque
converter features a hydraulically-activated TCC.
When the TCC is engaged, the torque is
transmitted directly from the crankshaft via the
torque converter housing to the transaxle input
shaft.
Installation position
The TCC is an integral component of the torque
converter.
Function
The TCM controls the PWM via the TCC solenoid
valve for the TCC (SLU). Based on the signals for
engine speed and accelerator pedal position as
well as vehicle speed, driving comfort is improved
by linear actuation of the TCC.
E89081
1
A
B
23
Description
Item
APP (accelerator pedal position)
A
Vehicle speed
B
TCC disengaged
1
Slip lock-up mode
2
Full lock-up mode
3
Full lock-up mode
In lockup mode the TCC is closed. The impeller
and the turbine of the torque converter are friction
locked. The engine torque acts directly on the
transmission input shaft. Fuel consumption is
reduced due to a reduction in the torque converter
pump losses.
G1163605en2008.50 Kuga8/2011
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Full lock-up mode of the TCC is not generated at
engine temperatures below 20 °C (68 °F).
Slip lock-up mode
In slip lock-up mode, slip in the TCC is permitted
in order to improve driving comfort. The hydraulic
pressure acting on the TCM varies in accordance
with the duty signal of the actuation signal
generated by the PWM for the TCC solenoid valve
for the TCC (SLU). The automatic transaxle
temperature increases in slip lock-up mode.
The TSS sensor
E112328
The TSS sensor is mounted at the top of the
transmission housing. It is an active sensor and is
supplied with 12 V.
Function
E89083
3
2
1
Description
Item
Signal voltage
1
Signal frequency
2
Transmission input shaft speed
3
The TSS sensor is a Hall sensor. It generates a
square-wave signal, the frequency of which varies
depending upon the speed of the transmission
input shaft.
The frequency of the square-wave signal increases
with the transmission input shaft speed. The TSS
sensor picks up the speed at the housing of the
1st - 5th gear clutch (C1).
The TCM uses the information from the TSS sensor
to determine the following parameters:
• Calculation of the torque reduction that needs to be requested by the PCM during shifting.
• Comparison of engine speed with transmission input shaft speed for calculation of torque
converter slip.
• Calculation of the shift points.
• Calculation of the engaging and disengaging point for the TCC (lock-up function).
• Calculation of the current gear ratios by comparison of the OSS sensor signal.
G1163605en2008.50 Kuga8/2011
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Automatic Transmission/Transaxle
— Vehicles With:
5-Speed Automatic Transaxle - AW55 AWD
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Consequences of signal failure
E125799
34
2
1
Description
Item
The TSS sensor
1
TCM connector 'B'
2
• Emergency mode 1
• Torque limitation is activated in order to protect the transaxle components from damage.
• The engine speed serves as a substitute value.
• When the engine is restarted (ignition switched off for approx. 15 seconds), the transaxle is no
longer in limp home mode. There is no longer
a fault indication on the instrument cluster, and
the MIL is off. However, the fault remains stored
in the TCM. If the fault is still present, limp home
mode is reactivated.
The OSS sensor
E112329
The OSS sensor is located at the rear of the
transmission casing. It supplies signals about the
transaxle output speed to the TCM.
Function
E89083
3
2
1
Description
Item
Signal voltage
1
Signal frequency
2
Transmission input shaft speed
3
The OSS sensor is a Hall sensor. The OSS sensor
generates a square-wave signal, the frequency of
which varies depending upon the speed of the
G1163605en2008.50 Kuga8/2011
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transaxle output shaft. The frequency of the
square-wave signal increases with the speed of
the transmission output shaft.
The OSS sensor picks up the speed at the gear of
the parking lock.
The TCM uses the information from the OSS
sensor for the following parameters:
• Calculation of the degree of torque reductionthat needs to be requested by the PCM during
shifting.
• Calculation of the shift points.
• Calculation of the engaging and disengaging point for the TCC (lock-up function).
• Calculation of the current gear ratios by comparison of the TSS sensor signal.
Consequences of signal failure
E125800
1 2
2
1
Description
Item
The OSS sensor
1
TCM connector 'B'
2 • The torque converter lockup and adaptation
functions are deactivated.
• The wheel speed signal is transmitted by the ABS to the TCM via the HS-CAN data bus. This
signal serves as a substitute value.
• When the engine is restarted (ignition switched off for approx. 15 seconds), the transaxle is no
longer in limp home mode. There is no longer
a fault indication on the instrument cluster, and
the MIL is off. However, the fault remains stored
in the TCM. If the fault is still present, limp home
mode is reactivated.
The TFT sensor
E125802
The TFT sensor is located in the valve body and
is an integral component of the internal transaxle
wiring harness.
Function
G1163605en2008.50 Kuga8/2011
307-01- 58
Automatic Transmission/Transaxle
— Vehicles With:
5-Speed Automatic Transaxle - AW55 AWD
307-01- 58
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E89089
10000100
50 0 150
1
2
Description
Item
Resistance (Ohms)
1
Temperature (°C)
2
The sensor is an NTC (negative temperature
coefficient) (negative temperature coefficient)
sensor. The voltage supply is 5 V. The transmission
fluid temperature is detected by measuring the
voltage drop across the NTC resistor.
The TCM uses the transmission fluid temperature
information for the following calculations:
• Transaxle shift points
• If the transmission fluid temperatures are too high, slip lock-up of the TCC is prevented.
Consequences of signal failure
88
E125803
1
2
Description
Item
The TFT sensor
1
TCM connector 'C'
2
• No activation of TCC slip lock-up mode.
• No activation of TCC full lock-up mode.
• The MIL is activated.
• When the engine is restarted (ignition switched off for approx. 15 seconds), the transaxle is no
longer in limp home mode. There is no longer
a fault indication on the instrument cluster, and
the MIL is off. However, the fault remains stored
in the TCM. If the fault is still present, limp home
mode is reactivated.
• If the sensor fails, a temperature substitute value of 30 °C (86 °F) is initially assumed. After 15
minutes driving, the substitute value is raised
t o 111 ° C .
G1163605en2008.50 Kuga8/2011
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