Frozen Values Brake Control Module (BCM), Description

Frozen values brake control module (BCM), description

Explanation
When a diagnostic trouble code is generated, status or values are stored for certain parameters in the control module's memory. Then these can be read out using freeze frames.
Some parameters are not implemented in all models.

Note! Parameters marked with STC/DSTC are only shown for vehicles equipped with STC and DSTC. Parameters marked with DSTC are only shown for vehicles equipped with DSTC.

Hint: For information on abbreviations: Brake system, abbreviations, B6324S5 Testing and Inspection

Global time
The value shows time in question when the diagnostic trouble code was stored. The brake control module (BCM) obtains the value via CAN from the central electronic module (CEM).

Mileage
The value shows total mileage in kilometers when the diagnostic trouble code was stored. The brake control module (BCM) obtains the value via CAN from the central electronic module (CEM).

Battery voltage central electronic module (CEM)
The value shows battery voltage in volts when the diagnostic trouble code was stored. The brake control module (BCM) obtains the value via CAN from the central electronic module (CEM).

Engine running
The status indicates if the engine was running or not when the diagnostic trouble code was stored. The brake control module (BCM) obtains the value via CAN from the central electronic module (CEM).
Values:
Engine running
Not running

Outside temperature
The value shows outdoor temperature in degrees Celsius at the time when the diagnostic trouble code was stored. The brake control module (BCM) obtains the value via CAN from the central electronic module (CEM).

Current gear
The status indicates gear position at the time when the diagnostic trouble code was stored. The brake control module (BCM) obtains the value via CAN from the transmission control module (TCM) if the vehicle is equipped with automatic transmission or central electronic module (CEM) if the vehicle is equipped with manual transmission.
Values:
1st gear
2nd gear
3rd gear
4th gear
5th gear
6th gear
Reverse gear
Undefined

Engine torque
The value shows the engine's torque in Nm at the time when the diagnostic trouble code was stored.

Requested torque
The value shows requested torque in Nm at the time when the diagnostic trouble code was stored. The brake control module (BCM) requests a certain torque from engine control module (ECM) depending on the situation.

Clutch pedal position
The status indicates position of the clutch pedal at the time when the diagnostic trouble code was stored.
Values:
Activated
Not activated

DSTC-switch (DSTC)
The status indicates position of the switch at the time when the diagnostic trouble code was stored. The function is engaged automatically when the ignition is on but can be disengaged manually.
Values:
Activated
Not activated

Engine speed (RPM)
The value shows the engine's rpm at the time when the diagnostic trouble code was stored. The brake control module (BCM) obtains the value via CAN from the central electronic module (CEM).

Voltage feed control module
The value shows system voltage in volts at the time when the diagnostic trouble code was stored.

Pump motor
The status indicates if the pump motor for ABS was activated or not at the time when the diagnostic trouble code was stored.
Values:
Activated
Not activated

Vehicle's reference speed
The value indicates the vehicle speed in km/h.

Vehicle's acceleration (DSTC)
The value shows the vehicle's acceleration straight ahead in m/s2.

Steering wheel angle current value (DSTC)
The value shows the steering angle in degrees at the time when the diagnostic trouble code was stored.

Oversteering/understeering (DSTC)
The status indicates if the vehicle understeered or oversteered at the time when the diagnostic trouble code was stored.
Values:
No understeering or oversteering
Understeer
Oversteer

Pedal position sensor
The status indicates the brake pedal's position at the time when the diagnostic trouble code was stored.
Values:
PTS inactive
0-1 cm
1-2 cm
>2 cm

Travel direction (DSTC (dynamic stability and traction control) )
The status indicates the vehicle's travel direction at the time when the diagnostic trouble code was stored.
Values:
Backward
Forward

Brake pressure sensor A (DSTC)
The value shows the pressure in the brake system's primary circuit, given in bar.

Brake pressure sensor B (DSTC)
The value shows the pressure in the brake system's secondary circuit, given in bar.

Control function RCS (DSTC)
The status indicates if the RCS-function controlled at the time when the diagnostic trouble code was stored.
Values:
Activated
Not activated

Active yaw control control function (DSTC (dynamic stability and traction control) )
The status indicates if the stability function controlled at the time when the diagnostic trouble code was stored.
Values:
Activated
Not activated

Traction control control function (STC (stability and traction control) /DSTC (dynamic stability and traction control) )
The status indicates if the anti-spin function (TRACS) controlled at the time when the diagnostic trouble code was stored.
Values:
Activated
Not activated

Stability control control function (STC (stability and traction control) /DSTC (dynamic stability and traction control) )
The status indicates if the anti-spin function (TRACS) controlled at the time when the diagnostic trouble code was stored.
Values:
Activated
Not activated

Control function ABS
The status indicates if the ABS-function controlled at the time when the diagnostic trouble code was stored.
Values:
Activated
Not activated

Pressure build-up valve brake booster (DSTC)
The status indicates if the pressure build-up valve for active brake booster was activated at the time when the diagnostic trouble code was stored.
Values:
Activated
Not activated

Pedal pressure sensor (DSTC (dynamic stability and traction control) )
The status indicates if the brake pedal was activated when the diagnostic trouble code was stored.
Values:
Activated
Not activated