Transmission Overview
The Electronically Controlled Continuously Variable Transmission (ECVT) has the following internal components
- Traction Motor
- Generator/Starter
- High voltage terminals
- Pump and filter assembly
- Transmission fluid auxiliary pump
- TR sensor
- TFT sensor
- Planetary carrier
- Differential carrier
When the transmission range is in the park position the park pawl locks the final drive to the transmission case and the vehicle cannot be moved. The vehicle can be turned on and the ready indicator light illuminates to indicate the selector lever can be moved out of park and the vehicle can be driven.
When the transmission range is in the reverse position, the TCM changes the polarity of the field coil which reverses the electric motor to move the vehicle in reverse.
When the transmission range is in the neutral position, the electric motor does not provide power to or hold the final drive and the final drive can spin freely.
When the transmission range is in the drive position, the TCM provides high voltage current to the electric motor to transfer torque to the final drive.
When the transmission range is in the low position, the transmission increases regenerative braking when the accelerator pedal is released to provide an engine braking feeling and increased battery charging.
Scheme 1
Scheme 2
| Item | Description |
|---|---|
| 1 | Transmission identification tag |
| 2 | Transmission strategy tag |
Scheme 3
| Item | Description |
|---|---|
| 1 | Transmission part number |
| 2 | Bar code 1 |
| 3 | Assembly plant line shift |
| 4 | Transmission build date (DDMMYY) |
| 5 | Transmission serial number |
| 6 | Bar code 2 |
Scheme 4
| Item | Description |
|---|---|
| 1 | 13 digit transmission strategy |
| 2 | 11 digit transmission identification |
Scheme 5
Diagnostic Overview
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS (100-00 General Information, Description and Operation).
Refer to SYSTEM WIRING DIAGRAMS Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The TR sensor monitors the position of the manual control lever shaft. The TR sensor is mounted on the transmission. The TR sensor allows the vehicle to start in park and neutral positions. The TR sensor output signal is linear over the measurement range and the PCM receives this signal verifying the selector lever position.
The TR sensor input is used for selector lever position, starter inhibit relay and reversing lamps.
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS (100-00 General Information, Description and Operation).
Refer to SYSTEM WIRING DIAGRAMS Wiring Diagrams Cell 29 for schematic and connector information.
The TFT sensor is located on the internal transmission harness. The resistance value of the TFT sensor varies with temperature change. The SOBDMC monitors the voltage drop across the TFT sensor to determine transmission fluid temperature.
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS (100-00 General Information, Description and Operation).
Refer to SYSTEM WIRING DIAGRAMS Wiring Diagrams Cell 29 for schematic and connector information.
The TR sensor monitors the position of the information control lever shaft. The TR sensor is mounted on the transmission. The TR sensor allows the vehicle to start in park and neutral positions. The TR sensor output signal is linear over the measurement range and the PCM receives this signal verifying the selector lever position.
The TR sensor input is used for selector lever position, starter inhibit relay and reversing lamps.
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS (100-00 General Information, Description and Operation).
Refer to SYSTEM WIRING DIAGRAMS Wiring Diagrams Cell 29 for schematic and connector information.
The TFT sensor is located on the internal transmission harness. The resistance value of the TFT sensor varies with temperature change. The SOBDMC / TCM monitors the voltage drop across the TFT sensor to determine transmission fluid temperature.
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS (100-00 General Information, Description and Operation).
Refer to SYSTEM WIRING DIAGRAMS Wiring Diagrams Cell 29 for schematic and connector information.
The electronic transmission fluid auxiliary pump is used to keep the transmission fluid circulating during extended drive times without engine charging. The electronic transmission fluid auxiliary pump has an internal microprocessor and communicates with the SOBDMC / TCM over a PWM circuit with a frequency of 150 Hz with a duty cycle range of 10% to 90%.