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Home >> Volvo >> 2012 >> S60 R Design AWD L6-3.0L Turbo VIN 90 B6304T4 >> Repair and Diagnosis >> Powertrain Management >> Transmission Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Vehicle Communication Information, Transmission Control Module (TCM) >> Description of Parameters

Description of Parameters






Description of parameters

Parameters, status

General
Some values differ from those indicated in the signal description Signal specification, B6304T4, TF-80SC AWD, B5254T5, TF-80SC 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.

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 network 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 lockout status
The value indicates the status for shiftlock in the shift lever bracket. The Transmission Control Module (TCM) regulates a solenoid in the shift lever bracket. The solenoid locks the gear selector.
Gear selector lockout active
gear selector lockout not active

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 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.

Parameters, value

Engine speed (RPM)
The value indicates engine speed. The Transmission Control Module (TCM) obtains the value from the Engine Control Module (ECM) via CAN. The Transmission Control Module (TCM) compares the signal with its own engine speed sensor signal.
Measurement range: 0 - 8,191a� rpm
Idle rpm: 850a� 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 engine temperature. 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 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 - 320 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 - 10000 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 - 10 000 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 - 10 000 rpm.

Linear pressure solenoid SLC1, SLC2, SLC3, SLB1 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.
Measurement range: 0 - 1000 mA.

Linear pressure solenoid SLC1, SLC2, SLC3, SLB1 requested current
The value indicates requested current strength from the Transmission Control Module (TCM) to the solenoid. The value can be used for comparison with the read value in the circuit.
Measurement range: 0 - 1000 mA.

Lock-up solenoid SLU, 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.
Measurement range: 0 - 1000 mA.

Lock-up solenoid SLU, requested current
The value indicates requested current strength from the Transmission Control Module (TCM) to the solenoid. The value can be used for comparison with the read value in the circuit.
Measurement range: 0 - 1000 mA.

Linear pressure solenoid SLT, 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. Solenoid control is directly dependent on the accelerator pedal signal. The higher the signal from the accelerator pedal sensor, the lower the current through the solenoid and therefore the higher the system pressure.
Measurement range: 0 - 1000 mA.
Normal value with accelerator pedal released: approx. 1000 mA.

Linear pressure solenoid SLT, requested current
The value indicates requested current strength from the Transmission Control Module (TCM) to the solenoid. The value can be used for comparison with the read value in the circuit.
Measurement range: 0 - 1000 mA.

Control module power supply
The value indicates battery voltage at Transmission Control Module (TCM).
Measurement range: 0 -25.5 V.

Current gear ratio
The value indicates the transmission's gear ratio. The Transmission Control Module (TCM) uses input speed and output speed (vehicle speed) to calculate the gear ratio. For actual gear ratio, see the table below.






Expected gear ratio
The value indicates which gear ratio the Transmission Control Module (TCM) expects. Compare the value with the table for "Current gear ratio."

Passenger compartment temperature
The value displays the passenger compartment temperature. The transmission control module (TCM) obtains the value from the central electronic module (CEM) via the controller area network (CAN).
Measurement range: -60 to +195 °C.
If a temperature of +194 °C or +195 °C is displayed the value from the controller area network (CAN) is faulty according to the transmission control module (TCM).

Outside temperature
The value displays the outside temperature. The transmission control module (TCM) obtains the value from the central electronic module (CEM) via the controller area network (CAN).
Measurement range: -128 to +127 °C.
If a temperature of +126 °C or +127 °C is displayed the value from the controller area network (CAN) is faulty according to the transmission control module (TCM).

MECU power supply
The value indicates battery voltage at the Central Electronic Module (CEM). The Accessory Electronic Module (AEM) obtains the value from the Central Electronic Module (CEM) via CAN.
Measurement range: 5-38 V.
Normal value when alternator is charging: 13.0 - 14.5 V.
If a voltage of 36.75 V or 36.875 V is displayed, the value from the controller area network (CAN) is faulty according to the transmission control module (TCM).

Distance
The value displays the distance driven. The transmission control module (TCM) obtains the value from the central electronic module (CEM) via the controller area network (CAN).
Measurement range: 0 - 1,048,575 km (651,554 miles)
If a distance of 16, 777,214 km or 16,777,215 km is displayed the value from the controller area network (CAN) is faulty according to the transmission control module (TCM).

Power supply position
The value indicates the current status of the power supply mode.
- Key removed
- Key recently removed
- Key approved
- Ignition off after Accessory position
- Accessory position
- Accessory position after Ignition on
- Ignition on
- Running
- Start attempt
- Signal missing

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