2011 FORD KUGA Index

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.
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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
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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
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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 .
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The TR sensor
E125819
The TR sensor and the TCM form one unit. This
unit is located at the top of the transmission casing,
on the gear linkage.
Function
The TR sensor has three separate functions:
• Transmit a signal to the TCM about the selectedtransmission range.
• To transmit the signal to switch on the reversing lamps to the GEM when the selector lever is in
the 'R' position.
• To transmit the start enable signal to the PCM when the selector lever is in the 'P' or 'N'
position.
The TR sensor contains a permanent magnet and
a linear Hall detector. It produces a signal voltage
between 0 and 5 V. This signal voltage
corresponds to the selector lever position currently
chosen.
Voltage values for the different gears:
• P approximately 0.65 V
• R approximately 1.64 V
• N approximately 2.12 V
• D approximately 2.49 V
Consequences of signal failure
If the TR sensor fails, the MIL is activated and the
vehicle can be driven in emergency mode 4. The
vehicle can no longer be started for safety reasons
after the ignition is switched off because the TCM
does not detect the current transmission range.
If a shift solenoid valve fails, the MIL is activated
and the vehicle can be driven in the appropriate
emergency mode.
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Transmission Fluid Level Check
General EquipmentFord Diagnostic Equipment
Materials
Specification
Name
WSS-M2C924-A / 4U7J-
M2C924-AA
Automatic Transmission
Oil E-AW
Inspection
1.
Refer to: Health and Safety Precautions (100-00
General Information, Description and
Operation).
2. Connect the Ford diagnostic equipment.
General Equipment: Ford Diagnostic Equipment
3. Make sure that the transmission is not in
emergency operation mode.
4. Make sure that the transmission fluid
temperature is between 70° and 80°C.
General Equipment: Ford Diagnostic Equipment
80
70
E114667
5. WARNING: Make sure that the brake pedal and parking brake are fully applied
during the test.
Start and run the engine at idle. 6.
E114668
7. NOTE:
Make sure that the selector lever and
the gearshift mechanism are in the park (P)
position.
8. Refer to: Lifting(100-02 Jacking and Lifting,
Description and Operation).
9.
E98183
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10.
E114670
11. CAUTION: Use lint free cloth.
E114671
80
70
12. Adjust the fluid level in the automatic
transmission if necessary.
Material: Automatic Transmission Oil E-AW
(WSS-M2C924-A / 4U7J-M2C924-AA)
transmission fluid
E114672
13.
E114938
14.
E98183
15. Switch off the engine.
16. Disconnect the Ford diagnostic equipment.
General Equipment: Ford Diagnostic Equipment
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Transmission Fluid Drain and Refill
General EquipmentFluid Container
Materials
Specification
Name
WSS-M2C924-A / 4U7J-
M2C924-AA
Automatic Transmission
Oil E-AW
Draining
17.
Refer to: Health and Safety Precautions (100-00
General Information, Description and
Operation).
18. Refer to: Lifting(100-02 Jacking and Lifting,
Description and Operation).
19.
E98183
20. WARNING: Be prepared to collect escaping fluid.
General Equipment: Fluid Container
E114758
21.Torque: 40Nm
E114758
Filling
22.
E114670
23.Use a suitable plastic tube.
E114933
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