Contents Section: Anti-Lock/traction Control All sections

Brake Control Module (BCM) - Specifications: Other Volvo V50 I рестайлинг

LEFT FRONT INLET VALVE

Activating left front wheel inlet valve.

"Clicking sound" in the ABS hydraulic modulator.

RIGHT FRONT INLET VALVE

Activating right front wheel inlet valve.

"Clicking sound" in the ABS hydraulic modulator.

LEFT REAR INLET VALVE

Activating left rear wheel inlet valve.

"Clicking sound" in the ABS hydraulic modulator.

RIGHT REAR INLET VALVE

Activating right rear wheel inlet valve.

"Clicking sound" in the ABS hydraulic modulator.

LEFT FRONT OUTLET VALVE

Activating left front wheel outlet valve.

"Clicking sound" in the ABS hydraulic modulator.

RIGHT FRONT OUTLET VALVE

Activating right front wheel outlet valve.

"Clicking sound" in the ABS hydraulic modulator.

LEFT REAR OUTLET VALVE

Activating left rear wheel outlet valve.

"Clicking sound" in the ABS hydraulic modulator.

RIGHT REAR OUTLET VALVE

Activating right rear wheel outlet valve.

"Clicking sound" in the ABS hydraulic modulator.

PUMP MOTOR

Activating the hydraulic modulator pump motor.

The pump motor should "hum".

TRACS VALVE 1 OR 2

Activating the TRACS (Traction Control System) valve 1 or 2.

"Clicking sound" in the ABS hydraulic modulator.

BODY SENSOR CLUSTER STABILITY SENSOR (BSC) VALVE 1 OR 2 (ACTIVE YAW CONTROL)

Activating the body sensor cluster stability sensor (BSC) valve 1 or 2.

"Clicking sound" in the ABS hydraulic modulator.

PARAMETERS, STATUS

Note. The parameters that can be read off are determined by the functions (STC/TRACS/DSTC) with which the car is equipped.

STOP LAMP SWITCH

The value indicates the status of the stop lamp switch. The brake control module (BCM) receives the value from the engine control module (ECM) via the Control area network (CAN).

Active (pressed in) = Stop (brake) lamp switch activated.

Not activated = Stop (brake) lamp switch not activated.

ENGINE RUNNING

The value indicates the status of the engine. The brake control module (BCM) receives the value from the central electronic module (CEM) via the Control area network (CAN).

Yes = Engine running.

No = Engine switched off.

SAFETY LEVEL

The value indicates the present safety level of the brake control module (BCM). The safety level changes depending on which diagnostic functions are activated by VIDA in the control module. VIDA automatically selects the correct safety level depending on the diagnostic function. The activation of components/functions and calibration can only be performed at level 1 or 2.

Basic level = Normal position.

Level 1 = Safety level 1 activated.

Level 2 = Safety level 2 activated.

ABS/EBD/TC/SC/AYC CONTROL FUNCTION

Note. The SC/DSTC parameter is only updated in cars fitted with STC/DSTC.

The values indicate the status of each function.

The status may vary depending on detected faults, driving, etc.

AYC is indicated as switched off until the steering wheel has been initiated and the car has been driven at above 10 km/h.

Switched off = Function blocked.

Permitted = Function accessible.

STC/DSTC SWITCH INDICATION (STC)

Note. Only cars with STC/DSTC.

The value indicates the status of the indicator LED in the STC/DSTC switch. The requested status of the brake control module (BCM) that is sent out on the CAN network.

On = STC/DSTC indication activated.

Off = STC/DSTC indication not activated.

DIRECTION OF STEERING RIGHT / LEFT

Note. Only cars with DSTC.

The value indicates the direction in which the steering wheel is turned in relation to the stored center position. The brake control module (BCM) receives the value from the steering wheel module (SWM) via the Control area network (CAN).

Right = The steering wheel is turned to the right.

Left = The steering wheel is turned to the left.

POWER SUPPLY

The value indicates the power supply for the brake control module (BCM).

Measurement range: 0-18 V

BATTERY VOLTAGE, CENTRAL ELECTRONIC MODULE (CEM)

The value indicates the battery voltage at the central electronic module (CEM). The brake control module (BCM) receives the value from the central electronic module (CEM) via the Control area network (CAN).

Measurement range: 0-32 V.

PASSENGER COMPARTMENT TEMPERATURE

The value indicates the passenger compartment temperature. The brake control module (BCM) receives the value from the central electronic module (CEM) via the Control area network (CAN).

Measurement range: -60°C - +195°C.

OUTSIDE TEMPERATURE

The value indicates the outside temperature. The brake control module (BCM) receives the value from the central electronic module (CEM) via the Control area network (CAN).

Measurement range: -128°C - +127°C.

MILEAGE

The value indicates the mileage. The brake control module (BCM) receives the value from the central electronic module (CEM) via the Control area network (CAN).

Measurement range: 0 and upwards.

PEDAL POSITION SENSOR POSITION

Value from the pedal position sensor. The value indicates the position of the pedal position sensor.

Measurement range: 0- 45 mm.

THE SPEED OF THE PEDAL POSITION SENSOR

Value from the pedal position sensor. The value indicates the speed of the pedal position sensor, i. e. how quickly the brake pedal is depressed or released. When the pedal is depressed, positive values are indicated. When the pedal is released, negative values are indicated.

Measurement range: -200- +200 mm/s.

WHEEL SPEED

Value from the wheel sensors. The brake control module (BCM) calculates the wheel speed using the relevant wheel sensor.

Measurement range: 0.60-300 km/h.

VEHICLE REFERENCE SPEED

The value indicates the speed of the car in km/h. The value is calculated from the values from all the wheel sensors.

Measurement range: 0.60-300 km/h.

WHEEL ACCELERATION

The value indicates the acceleration or deceleration of the wheels. The brake control module (BCM) derives the wheel acceleration or deceleration from the relevant wheel sensor signal. The value may vary dependent on the road surface. Uneven road surfaces give large variations.

Measurement range: 0-200 m/s 2

ACCELERATION OF THE CAR, POSITIVE OR NEGATIVE

The value indicates the acceleration/deceleration of the car. The brake control module (BCM) derives the acceleration/deceleration of the car from the relevant wheel sensor signal.

Measurement range: 0-200 m/s 2 .

THE BRAKE DISC TEMPERATURE

The value indicates the temperature of the brake discs. The brake control module (BCM) calculates the brake disc temperature based on the length of time the traction control system has been operating or the ABS has been activated.

Measurement range: 0°C - 920 °C

STEERING WHEEL ANGLE SENSOR, PRESENT VALUE

Note. Only cars with DSTC.

The value indicates the position of the steering wheel. The brake control module (BCM) receives the value from the steering wheel module (SWM) via the Control area network (CAN).

Measurement range: -720- +720 °/s.

Positive values = Left

Negative values = Right

STEERING WHEEL ANGLE SPEED

Note. Only cars with DSTC.

The value displays the speed at which the steering wheel is turned. The brake control module (BCM) receives the value from the steering wheel module (SWM) via the Control area network (CAN).

Measurement range: -1500- +1500 °/s.

YAW ANGLE SIGNAL (DSTC)

Note. Only cars with DSTC.

The value indicates the yaw angle speed, i. e. the speed at which the car turns on flat ground. The signal from the yaw rate sensor, which is integrated in the body sensor cluster stability sensor (BSC), transmits information to the brake control module (BCM) about the rate of yaw (steering direction) of the car in °/s. A positive value indicates steering to the left. A negative value indicates steering to the right.

Measurement range: -80- +80 °/s

HINT: The value can be influenced by moving the rear or front section rapidly sideways.

LATERAL ACCELEROMETER, SIGNAL

Note. Only cars with DSTC.

The value indicates the lateral accelerometer signal, i. e. the lateral incline of the car. The signal from the lateral accelerometer, which is integrated in the body sensor cluster stability sensor (BSC), transmits information to the brake control module (BCM) about the lateral acceleration of the car. Turning left produces a body roll to the right, giving a positive value. Turning right produces a body roll to the left, giving a negative value.

Measurement range: -20- +20 m/s 2

HINT: The value can be influenced by changing the sideways incline of the car, for example by raising the right or left-hand side of the car.

BRAKE PRESSURE SENSOR

Note. Only cars with DSTC.

The value indicates the brake pressure in the hydraulic modulator. The internal brake pressure sensor transmits a signal to the brake control module (BCM) containing information about the pressure in the brake system.

Measurement range: 0-300 bar.

ACCELEROMETER, SIGNAL

Note. Only cars with DSTC and AWD.

The value indicates the accelerometer signal, i. e. the longitudinal incline of the car. The signal from the accelerometer, which is integrated in the body sensor cluster stability sensor (BSC), transmits information to the brake control module (BCM) about the longitudinal acceleration of the car. A positive value indicates acceleration, i. e. the front of the car is raised. A negative value indicates deceleration, i. e. the front of the car is lowered.

Measurement range: -20- +20 m/s 2

HINT: The value can be affected by changing the longitudinal incline of the car, for example by raising or lower the front or rear end of the car.

OFFSET VALUES (ONLY CARS WITH DSTC)

HINT: The offset value is an adaptive correction value which indicates the individual offset for the sensor. The brake control module (BCM) uses the value to determine the correct start value when the DSTC (dynamic stability and traction control) system is started up. If the normal value has changed during an operating cycle, the value is stored in the EEPROM memory of the brake control module (BCM) after the ignition is switched off. The value is then reloaded to the internal memory when the ignition is switched on.

HINT: The offset values can also change shortly after the ignition was switched off.

STEERING WHEEL ANGLE SENSOR, STORED OFFSET VALUE

The value is stored in the EEPROM memory of the brake control module (BCM).

Measurement range: -20- +20 °/s

STEERING WHEEL ANGLE SENSOR, OFFSET VALUE

Present value for this operating cycle. A diagnostic trouble code (DTC) is stored and DSTC (dynamic stability and traction control) is shut off at ±15 °/s

Measurement range: -20- +20 °/s

YAW RATE SENSOR, OFFSET VALUE

Present value for this operating cycle. A diagnostic trouble code (DTC) is stored and DSTC (dynamic stability and traction control) is shut off at ±10 °/s

Measurement range: -25- +25 °/s

LATERAL ACCELEROMETER, STORED OFFSET VALUE

The value is stored in the EEPROM memory of the brake control module (BCM).

Measurement range: -10- +10 m/s 2

LATERAL ACCELEROMETER, OFFSET VALUE

Present value for this operating cycle. A diagnostic trouble code (DTC) is stored and DSTC (dynamic stability and traction control) is shut off at ± 1.7 m/s 2

Measurement range: -10- +10 m/s 2

BRAKE PRESSURE SENSOR, STORED OFFSET VALUE

The value is stored in the EEPROM memory of the brake control module (BCM).

Measurement range: -20- +20 bar

BRAKE PRESSURE SENSOR, OFFSET VALUE

Present value for this operating cycle. A diagnostic trouble code (DTC) is stored and DSTC (dynamic stability and traction control) is shut off at ±8 bar.

Measurement range: -20- +20 bar

ACCELEROMETER, STORED OFFSET VALUE (DSTC AWD)

The value is stored in the EEPROM memory of the brake control module (BCM).

Measurement range: -10- +10 m/s 2

ACCELEROMETER, SIGNAL (DSTC (DYNAMIC STABILITY AND TRACTION CONTROL))

Present value for this operating cycle. A diagnostic trouble code (DTC) is stored and DSTC (dynamic stability and traction control) is shut off at ± 1.7 m/s 2 .

Measurement range: -10- +10 m/s 2

CONTENTS

Select type of description.

  1. see «DESCRIPTION OF FROZEN VALUES»(ref-466862-S07717472472012042500000)
  2. see «COUNTERS, DESCRIPTION»(ref-466862-S00254202492012050700000)
  3. see «STATUS IDENTIFIER, DESCRIPTION»(ref-466862-S21722660022012050700000)

EXPLANATION

The values described below were stored in the memory of the brake control module (BCM) when the diagnostic trouble code (DTC) was stored.

All parameters do not need to be implemented in the brake control module (BCM). This varies from system to system.

Note. Parameters marked with STC (stability and traction control)/DSTC (dynamic stability and traction control) are only displayed on cars equipped with STC (stability and traction control) and DSTC (dynamic stability and traction control). Parameters marked with DSTC (dynamic stability and traction control) are only displayed on cars equipped with DSTC (dynamic stability and traction control).

The value indicates the outside temperature. The brake control module (BCM) receives the value from the central electronic module (CEM) via the Control area network (CAN).

Measurement range: -128- +127°C.

The value indicates the passenger compartment temperature. The brake control module (BCM) receives the value from the central electronic module (CEM) via the Control area network (CAN).

Measurement range: -60-+195°C.

The value indicates the battery voltage at the central electronic module (CEM). The brake control module (BCM) receives the value from the central electronic module (CEM) via the Control area network (CAN).

Measurement range: 0-32 V.

The value indicates the mileage. The brake control module (BCM) receives the value from the central electronic module (CEM) via the Control area network (CAN).

Measurement range: 0- and upwards.

Note. Only cars with STC/DSTC.

The value indicates the status of the indicator LED in the STC/DSTC switch. The requested status of the brake control module (BCM) that is sent out on the CAN network.

Activated = STC/DSTC indication activated.

Not activated = STC/DSTC indication not activated.

DIRECTION OF TRAVEL

Note. Only cars with DSTC.

The value displays the direction of travel of the car.

Forwards or backwards.

IGNITION KEY POSITION

The value indicates the position of the ignition key.

Note. The SC/DSTC parameter is only available in cars fitted with STC/TRACS/DSTC.

The values indicate the status of each function. See, see BRAKE SYSTEM, ABBREVIATIONS

Switched off = Function blocked.

Permitted = Function accessible.

The value indicates the status of the engine. The brake control module (BCM) receives the value from the central electronic module (CEM) via the Control area network (CAN).

Yes = Engine running.

No = Engine switched off.

The value indicates the status of the stop lamp switch. The brake control module (BCM) receives the value from the engine control module (ECM) via the Control area network (CAN).

Active (pressed in) = Stop (brake) lamp switch activated.

Not activated = Stop (brake) lamp switch not activated.

The value indicates the speed of the car in km/h. The value is calculated from the values from all the wheel sensors.

Measurement range: 0.60-300 km/h.

The value indicates the power supply to the brake control module (BCM).

Measurement range: 0-18 V.

Note. Only cars with DSTC.

The value indicates the lateral accelerometer signal, i. e. the lateral incline of the car. The signal from the lateral accelerometer, which is integrated in the body sensor cluster stability sensor (BSC), transmits information to the brake control module (BCM) about the lateral acceleration of the car. Turning left produces a body roll to the right, giving a positive value. Turning right produces a body roll to the left, giving a negative value.

Measurement range: -20- +20 m/s 2 .

Note. Only cars with DSTC and AWD.

The value indicates the accelerometer signal, i. e. the longitudinal incline of the car. The signal from the accelerometer, which is integrated in the body sensor cluster stability sensor (BSC), transmits information to the brake control module (BCM) about the longitudinal acceleration of the car. A positive value indicates acceleration, i. e. the front of the car is raised. A negative value indicates deceleration, i. e. the front of the car is lowered.

Measurement range: -20- +20 m/s 2 .

Note. Only cars with DSTC.

The value indicates the yaw angle speed, i. e. the speed at which the car turns on flat ground. The signal from the yaw rate sensor, which is integrated in the body sensor cluster stability sensor (BSC), transmits information to the brake control module (BCM) about the rate of yaw (steering direction) of the car in °/s. A positive value indicates steering to the left. A negative value indicates steering to the right.

Measurement range: -80- +80 °/s.

Note. Only cars with DSTC.

The value indicates the position of the steering wheel. The brake control module (BCM) receives the value from the steering wheel module (SWM) via the Control area network (CAN).

Measurement range: -720- +720 °/s.

Positive values = Left.

Negative values = Right.

Note. Only cars with DSTC.

Measurement range: -10- +10 m/s 2 .

Note. Only cars with DSTC.

Measurement range: -25- +25 °/s.

ACCELEROMETER, OFFSET VALUE

Note. Only cars with DSTC and AWD.

Measurement range: -10- +10 m/s 2 .

ENGINE SPEED (RPM)

The engine control module (ECM) transmits the engine speed (RPM) on the Control area network (CAN) from where the brake control module (BCM) retrieves the signal. The value of the engine speed is given in rpm.

BRAKE PRESSURE

Note. Only cars with DSTC.

The value indicates the hydraulic pressure in the brake system.