Toyota
Ford Kuga
 Service Manual
Automatic Transmission/Transaxle » Transmission Description (Overview)
Components of the electronic control

Components of the electronic control

Item Description
1 The TSS sensor
2 The OSS sensor
3 PWM (pulse width modulation)- solenoid valve - TCC (torque converter clutch) (SLU)
4 PWMsolenoid valve - shift pressure (SLS)
5 Shift solenoid S1
6 Shift solenoid S4
7 Shift solenoid S3
8 Shift solenoid S5
9 Shift solenoid S2
10 The TFT (transmission fluid temperature) sensor
11 PWMsolenoid valve for main line pressure (SLT)
12 TCM with integrated TR sensor

Depending on the input signals, the TCM mounted on the transaxle actuates the solenoid valves S1-S5 in the valve body. The solenoid valves are either in the "open" or "closed" state.

The (SLT and SLS) control valves regulate the hydraulic pressure according to the pulse/pause ratio of the electrical PWM signal. The controlled hydraulic pressure enables smooth shifting or the generation of a defined slip through actuation of the relevant clutches and brakes.

The shift timing is calculated by the TCM using the accelerator pedal position and vehicle speed.

Under normal conditions, gear shifting and torque converter lockup occur at low engine speeds to reduce fuel consumption.

If the accelerator pedal is pressed down quickly, the TCM switches automatically into kickdown mode.

Function of the shift solenoids in the gears

Function of the shift solenoids in the gears

Overview of the brakes, clutches and one-way clutches

Overview of the brakes, clutches and one-way clutches

Item Description
1 Clutch C2: Connects the input shaft with the sun gear.
2 Clutch C1: Connects the input shaft with the rear gear.
3 Brake B3: Locks the annulus of the front planetary gear.
4 One-way clutch F2: Locks the front annulus in the counterclockwise direction.
5 Brake B2: Prevents the sun gear on the input shaft from turning counterclockwise
6 Brake B1: Locks the sun gear on the input shaft.
7 One-way clutch F1: Prevents the sun gear on the input shaft turning counterclockwise when B2 is activated.
8 Park System
9 Clutch C3: Connects the sun gear with the front planetary gear carrier on the output shaft.
10 Brake band B4: Blocks the the sun gear on the output shaft.
11 Brake B5: Locks the rear planetary gear carrier on the output shaft.
12 Output shaft - transaxle
13 Input shaft - transaxle

Function of the clutches and brakes in the gears and during gear changes

Function of the clutches and brakes in the gears and during gear changes

TCM

TCM

The TCM with integral TR sensor is mounted on the transaxle casing.

Input and output signals at the TCM

Input and output signals at the TCM

Item Description
1 TCM
2 GEM (generic electronic module)
3 Instrument Cluster
4 PCM (powertrain control module)
5 ABS (anti-lock brake system)
6 Speed control
7 Select-shift switch module
8 PCM
9 Selector lever lock
10 PWMsolenoid valve - shift pressure (SLS)
11 PWMsolenoid valve for main line pressure (SLT)
12 PWM- solenoid valve - TCC (SLU)
13 Shift solenoid S1 (open when dormant)
14 Shift solenoid S2 (closed when dormant)
15 Shift solenoid S3 (closed when dormant)
16 Shift solenoid S4 (open when dormant)
17 Shift solenoid S5 (closed when dormant)
18 The TSS sensor
19 The OSS sensor
20 The TFT sensor
21 TR sensor in TCM
    More about «Transmission Description (Overview)»:

    Components of the AW55 automatic transaxle

    Transaxle cooling

    External shift mechanism

    Components of the electronic control

    Knowing and Understanding Customer Concerns

    Testing Possible Causes of Transmission Control Faults

    Visual inspection

    Towing the vehicle

    Push-starting the Vehicle

    Selector Lever Emergency Release

    Transmission Fluid Level Check

    Changing the Transmission Fluid

    Diagnosis with IDS

    Programming the 'N' position of the TR sensor

    Resetting the values learned by the TCM

    Ford Kuga Service Manual / Automatic Transmission/Transaxle / Transmission Description (Overview) / Components of the electronic control

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