Description of Parameters

Description of parameters

Parameters, status
General
Certain values deviate from those contained in the signal specifications. Transmission control module (TCM). This is because read off values are calculated and filtered by the control module. In certain cases the engine must be running to obtain the relevant values.

Gear-shift position sensor position
Only digital display
The value P/R/N/D/4/3/L displays the shifting program selected by the transmission control module (TCM), based on the signals from the gear-shift position sensor. If the signals from the gear-shift position sensor are outside the normal range and a diagnostic trouble code (DTC) is stored, the transmission control module (TCM) selects Limp home mode.

Gear-shift position sensor, gear selector assembly PRND43L
P/R/N/D/4/3/L = normal gear positions.
OR/OD/OL = Undefined R. D or L positions - the signals from the gear-shift position sensor are outside the normal range but are not interpreted as a fault. This may be because the gear selector is between positions or that the gear shift position sensor is incorrectly adjusted. FAULT = the gear-shift position sensor has transmitted the wrong combination of signals and a diagnostic trouble code (DTC) has been stored.

Gear-shift position sensor position A
LOW = The signal is grounded in the gear-shift position sensor
HIGH = The signal is not grounded in the gear shift position sensor
Position P: Signal A= LOW
Position R: Signal A= LOW
Position N: Signal A = HIGH
Position D: Signal A = HIGH
Position 4: Signal A= LOW
Position 3: Signal A= LOW
Position L: Signal A = HIGH

Gear-shift position sensor position B
LOW = The signal is grounded in the gear-shift position sensor
HIGH = The signal is not grounded in the gear shift position sensor
Position P: Signal B = HIGH
Position R: Signal B = LOW
Position N: Signal B = LOW
Position D: Signal B = LOW
Position 4: Signal B = LOW
Position 3: Signal B = HIGH
Position L: Signal B = HIGH

Gear-shift position sensor position C
LOW = The signal is grounded in the gear-shift position sensor
HIGH = The signal is not grounded in the gearshift position sensor
Position P: Signal C = HIGH
Position R: Signal C = HIGH
Position N: Signal C = HIGH
Position D: Signal C = LOW
Position 4: Signal B = LOW
Position 3: Signal B = LOW
Position L: Signal C = LOW

Gear-shift position sensor position PA
LOW = The signal is grounded in the gear-shift position sensor
HIGH = The signal is not grounded in the gearshift position sensor
Position P: Signal C= LOW
Position R: Signal C= HIGH
Position N: Signal C= LOW
Position D: Signal C= HIGH
Position 4: Signal C= LOW
Position 3: Signal C= HIGH
Position L: Signal C= LOW

Winter program status
Only digital display
This value indicates the shifting program selected by the control module based on the signal from the mode selector. W = Winter mode.
Engaged = Winter mode engaged
Disengaged = Winter mode disengaged

The status of shift solenoids S1, S2, S3, S4, S5
OFF = The solenoid is not activated
ON = The solenoid is activated

Stop (brake) light switch, status
Only digital display
The signal from the stop lamp switch to the transmission control module (TCM) is used to disengage the lock-up function when braking. This is to prevent juddering and stalling.

Kickdown, status
Only digital display
The kickdown switch (KD) transmits signals to the control module when the accelerator pedal (AP) is depressed to the kick down position.
Kickdown function is activated depending on the vehicle speed, the gear position and the position of the throttle position (TP) sensor.
OFF = Kickdown is not activated
ON = Kickdown is activated

Parameters, value
Engine speed (RPM)
The engine control module (ECM) transmits the engine speed (RPM) on the Control area network (CAN) from which the transmission control module (TCM) retrieves the signal which it then compares with its own speed sensor signal.
Measurement range: 0 - 8191 rpm
Idling speed: 850 rpm

Transmission input speed, transmission input speed sensor
Only digital display
The speed can be generated with the engine idling and the gear selector in P/N position. If the gear selector is in any other position, a gear is engaged and the transmission input shaft is connected to the output shaft and an RPM will not be indicated until the car is driven.
Depending on slippage in the torque converter the transmission speed and the engine speed will differ when the lock-up function is not engaged. Measurement range (rpm): 0 - 8000.

Transmission control module (TCM), transmission output speed sensor
Only digital display
The control module receives a signal from the transmission speed sensor which is affected by a toothed pulse wheel and calculates the vehicle speed based on the signal. The speed sensor is an "active" sensor. The signal oscillates between a peak and a trough value. The control module calculates the speed which is directly proportional to the frequency.
Measurement range: 0 km/h - top speed
Peak value: 14 mA
Trough value: 7 mA

Vehicle speed ABS
Only digital display
The control module for anti lock brakes (ABS) transmits signals about the vehicle speed to the engine control module (ECM). The signal is then transmitted via the Control area network (CAN) from where it is received by the transmission control module (TCM). The transmission control module (TCM) compares it with the signal from the transmission speed sensor. Measurement range: 0 km/h - top speed

Accelerator pedal (AP) position
The engine control module (ECM) transmits the accelerator pedal (AP) position on the Control area network (CAN) from where the transmission control module (TCM) retrieves the signal. The signal is used by the transmission to activate the kickdown function.
Measurement range: 0 - 100 %

Battery voltage
The value indicates battery voltage at the control module.
Measurement range: 0.0 - 25.5 V

Oil temperature
The transmission control module (TCM) calculates the temperature from the oil temperature sensor signal.
Measurement range: -60 - +180°C

Solenoid SLU current
Only digital display
The value indicates the amperage passing through the solenoid circuit. A lower amperage gives a higher reference pressure, which gives a higher line pressure.
Measurement range: 0.0 - 1.5 A
Normal value: approximately 280 mA

Solenoid SLS current
Only digital display
The value indicates the amperage passing through the solenoid circuit. A lower amperage gives a higher reference pressure, which gives a higher line pressure.
Measurement range: 0.0 - 1.5 A
Normal value: 280 mA

Solenoid SLT current
Only digital display
The value indicates the amperage passing through the solenoid circuit. A lower amperage gives a higher reference pressure, which gives a higher line pressure. Solenoid control is directly dependent on the throttle sensor signal. The higher the signal from the throttle sensor the lower the amperage through the solenoid and therefore the higher the line pressure.
Measurement range: 0.0 - 1.5 A
Normal value at closed throttle: approximately 1000 mA

Solenoids S1 and S2 current
The value indicates the amperage passing through the solenoids.
Measurement range: 0.0 - 1.5 A
Normal value at P-position: 1.5 A

Solenoid S3 current
The value indicates the amperage passing through the solenoids.
Measurement range: 0.0 - 1.0 A
Normal value at P-position: 0.8 A

Solenoid S4 and S5 current
The value indicates the amperage passing through the solenoids.
Measurement range: 0.0 - 1.5 A
Normal value in R-position: 0.8 A

Engine torque
Engine developed torque. Measurement range:-512 - +511 Nm

Torque control
Only digital display
The control module requests torque limitation by the engine control module (ECM) just before shifting to increase the shifting quality. The torque is limited by the ignition and fuel injection.
Measurement range: -512 - +511 Nm
511 = No torque limiting request

Torque limiting requested
Only digital display
The control module requests torque limitation by the engine control module (ECM) just before shifting. The signal is used to inform the ABS control module when the driver has requested torque reduction. This is so that the torque will return to the correct level after reduction.
Measurement range: -512 - +511 Nm
511 = No torque limiting request

Engine control module (ECM) engine coolant temperature (ECT)
The engine control module (ECM) transmits a signal indicating the engine coolant temperature (ECT) on the Control area network (CAN). The automatic transmission uses the signal to govern lock-up.
Measurement range: -60 - +195°C

The oil temperature sensor signal
The value indicates the oil temperature sensor signal. Voltage decreases with increased sensor temperature.
Value on cold transmission: (+20 degrees C) approximately 2.4 V.
Value on hot transmission: (+100 degrees C) approximately 0.3 - 0.5 V.