Description Of Parameters

GENERAL

Some values differ from those indicated in the signal description, refer to: SIGNAL SPECIFICATION, TRANSMISSION CONTROL MODULE (TCM . This is because the read values are calculated and filtered by the Transmission Control Module (TCM). In certain cases, the engine must be running in order to obtain the relevant values.

TRANSMISSION CONTROL MODULE (TCM), PARAMETERS

KICKDOWN, STATUS

The value indicates the status of the kickdown function. If kickdown function's limit value in the accelerator pedal (approx. 87%) is passed, kickdown is activated. Upon quick acceleration (accelerator pedal depressed to approx. 87%), the Transmission Control Module (TCM) transmits a signal for kickdown.

Not active = Kickdown not activated

Active = Kickdown activated

BRAKE PEDAL POSITION (VIA CAN)

The value indicates status of the brake pedal. The Engine Control Module (ECM) transmits a signal on the CAN to indicate the status of the brake pedal: activated or not activated. The Transmission Control Module (TCM) uses the signal for internal shift functions and for transmission diagnostics.

Not active = Brake pedal not affected

Active = Brake pedal affected

LOCK-UP FUNCTION ACCORDING TO SOLENOIDS

The value displays the lock-up function status according to how the solenoids are controlled.

No lock-up

Slipping lock up

Lock up (engaged)

GEAR POSITION SENSOR

The values shows the position of the gear position sensor.

Position P/R/N/D can be indicated.

HINT: Position D is indicated in both D mode and Geartronic mode.

MANUAL GEARSHIFTING (MAN)

The value indicates whether or not Geartronic is selected. Signal from the Gear Selector Module (GSM) to the Transmission Control Module (TCM).

No = Gear selector in position P/R/N/D

Yes = Gear selector in position Geartronic

GEARTRONIC UPSHIFT (+)

The value displays which function the gear selector module (GSM) transmits to the transmission control module (TCM).

No = No request up shift

Yes = Request up shift

GEARTRONIC DOWNSHIFT (-)

The value displays which function the gear selector module (GSM) transmits to the transmission control module (TCM).

No = No request down shift

Yes = Request down shift

GEAR SELECTOR P-POSITION

Value is shown if gear selector is in P.

Gear selector in position P

Gear selector not in position P

IMMOBILIZER, STATUS REQUEST

The value displays the status of the park neutral position (PNP) switch. The transmission control module (TCM) receives a signal from the gear selector module (GSM) about which position the gear selector lever is in. If the gear selector lever is in a position other than P or N the engine is prevented form starting by the transmission control module (TCM) activating the park neutral position (PNP) switch relay.

Start permitted.

Start not permitted.

GEAR ACCORDING TO THE SOLENOIDS

The value indicates the currently engaged gear based on the position of the solenoids.

R
Gear 1
Gear 2
Gear 3
Gear 4
Gear 5
6th gear
Gear 7
Gear 8

GEAR SHIFT SOLENOID S1, S2

The value displays the solenoid status:

OFF = The solenoid is not activated

ON = The solenoid is activated

REQUEST TO LIGHT MALFUNCTION INDICATOR LAMP (MIL)

The value displays which and in which way transmission control module (TCM) requests the malfunction indicator lamp (MIL) to light.

No = No request.

Yes = Request to turn on light.

REQUESTED TEXT MESSAGE

The value displays if the transmission control module (TCM) requests that a text message is displayed in the driver information module (DIM).

No = No request.

Yes = Request to display message.

ENGINE SPEED (RPM)

The value indicates engine speed. The Transmission Control Module (TCM) obtains the value from the Engine Control Module (ECM) via CAN and the Transmission Control Module (TCM) compares the signal with its own engine speed sensor signal.

Measurement range: 0-8191 r/min.

Idling speed: 850 RPM.

ENGINE TORQUE

The value indicates current engine torque. The Transmission Control Module (TCM) obtains the value from the Engine Control Module (ECM) via CAN.

Measurement range: -512 - 511 Nm.

ACCELERATOR PEDAL POSITION (VIA CAN)

The value indicates the accelerator pedal position. The Transmission Control Module (TCM) obtains the value from the Engine Control Module (ECM) via CAN. The Transmission Control Module (TCM) uses the signal to regulate system pressure in the transmission.

Measurement range: 0-100%.

>87% = kickdown.

ENGINE COOLANT TEMPERATURE (ECT)

The value indicates the engine temperature. The Transmission Control Module (TCM) obtains the value from the Engine Control Module (ECM) via CAN, where the Transmission Control Module (TCM) uses the signal to control lock up.

Measurement range: 60 - 195 °C.

OIL TEMPERATURE, TRANSMISSION

The value indicates transmission fluid temperature. The Transmission Control Module (TCM) calculates the temperature from the oil temperature sensor signal.

Measurement range: -100 - 200 °C.

VEHICLE SPEED

The value indicates vehicle speed. The Transmission Control Module (TCM) receives a signal from the transmission speed sensor, which is actuated by toothed pulse gear and uses the signal to calculate vehicle speed. The speed sensor is a so-called active sensor. The signal oscillates between a peak and a valley value. The Transmission Control Module (TCM) calculates speed, which is in direct proportion to the frequency.

Measurement range: 0 - 655 km/h.

SPEED SIGNAL FROM BRAKE CONTROL MODULE (BCM)

The value indicates output speed. The Transmission Control Module (TCM) obtains the value from the Brake Control Module (BCM) via CAN. The Transmission Control Module (TCM) compares the signal with the signal from the transmission speed sensor.

Measurement range: 0 - 325 km/h.

INPUT SPEED

The value displays the input speed (RPM). With the engine at idle speed and the gear selector lever in P/N position the speed (RPM) can be generated. If the gear selector lever is in another position a gear is engaged and the transmission input shaft engages with the output shaft. The speed (RPM) is displayed when the vehicle is driven. Depending on the slippage in the torque converter the transmission speed (RPM) and the engine speed (RPM) will differ when lock-up is not engaged. With lock-up engaged the transmission speed (RPM) must be the same as the engine speed (RPM).

Measurement range: 0 - 65, 535 RPM.

OUTPUT SPEED

The value displays the output speed (RPM). The transmission control module (TCM) receives a signal from the transmission speed sensor, which is affected by a toothed wheel on the output shaft. The value can be compared with the calculated value from the brake control module (BCM).

Measurement range: 0 - 15, 000 RPM.

OUTPUT SPEED FROM BRAKE CONTROL MODULE (BCM)

The value indicates output speed. The Transmission Control Module (TCM) converts the speed signal from the Brake Control Module (BCM) to RPM. This value can be compared with the RPM from the transmission speed sensor.

Measurement range: 0 - 65, 535 RPM.

LINEAR PRESSURE SOLENOIDS SL1, SL2, SL3, SL4, SL5, CURRENT

The value indicates the current passing through the solenoid circuit. Low current gives a higher control pressure which results in a higher system pressure.