Electronic Parking Brake Control Module Scan Tool Information
| Electronic Parking Brake Control Module Scan Tool Information |
Parking Brake Control Module Scan Tool Data Parameters
| Parameter | Expected Value | Description |
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Operating Conditions:
Ignition ON, Parking Brake Off
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Base Hardware
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Varies
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The scan tool displays the base hardware number.
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BCM Brake Pedal Signal
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Valid
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The scan tool displays Valid or Invalid. This parameter displays the signal status received by the body control module brake pedal as valid or invalid. If the signal received is invalid the parking brake control module will deactivate.
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Calculated System Temperature
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Varies
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The scan tool displays the parking brake control module temperature in degrees Celsius.
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Calibrations
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Varies
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The scan tool displays the calibration number.
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EBCM Emergency Park Brake Enable Signal
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Valid
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The scan tool displays Valid or Invalid. This parameter displays the signal status received by the electronic brake control module emergency park brake enable signal as valid or invalid. If the signal received is invalid the parking brake control module will deactivate.
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ECM Accelerator Pedal Position Signal
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Valid
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The scan tool displays Valid or Invalid. This parameter displays the signal status received by the engine control module accelerator pedal position signal as valid or invalid. If the signal received is invalid the parking brake control module will deactivate.
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ECM Clutch Pedal Position Signal
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Valid
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The scan tool displays Valid or Invalid. This parameter displays the signal status received by the engine control module clutch pedal position signal as valid or invalid. If the signal received is invalid the parking brake control module will deactivate.
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ECM Vehicle Speed Signal
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Valid
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The scan tool displays Valid or Invalid. This parameter displays the signal status received by the engine control module vehicle speed signal as valid or invalid. If the signal received is invalid the parking brake control module will deactivate.
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End Model
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Varies
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The scan tool displays the end model number.
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OS/Software
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Varies
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The scan tool displays the software number.
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Park Brake Calibration Status
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Passed
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The scan tool displays Passed or Failed. This parameter displays if the park brake calibration is properly programmed into the parking brake control module.
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Park Brake Cable Position
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1
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The scan tool displays 1, 2, or 3. This parameter displays the system cycle value. When the park brake is released 1 will be displayed. When the park brake is applied 3 is displayed. When the park brake is being applied or released 2 is displayed.
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Park Brake Motor Command
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Off
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The scan tool displays On or Off. This parameter displays the status of the park brake motor.
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Park Brake Motor Direction
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Inactive
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The scan tool displays Apply, Release or Inactive. This parameter displays the status of the park brake motor direction.
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Park Brake Motor Duty Cycle Command
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Varies
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The scan tool displays the pulse width modulated cycle as a percentage.
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Park Brake Release Reason
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None
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The scan tool displays None, Ign. Cycled, Spd. Threshold, or Brake Applied. This parameter displays the reason the parking brake was released.
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Park Brake Status
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Released
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The scan tool displays Applied, Released, Malfunction or Invalid. This parameter displays the current status of the parking brake.
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Park Brake Switch
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Inactive
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The scan tool displays Applied, Released, Inactive, or Invalid. This parameter displays the current status of the parking brake switch.
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TCM Current Gear Signal
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Valid
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The scan tool displays Valid or Invalid. This parameter displays the signal status received by the transmission control module current gear signal as valid or invalid. If the signal received is invalid the parking brake control module will deactivate.
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VIN
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Varies
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The scan tool displays the vehicle identification number.
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Parking Brake Control Module Scan Tool Output Controls
| Output Control | Description |
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Parking Brake Shoe Service Reset
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The electric parking brake module will reset the dynamic brake counter. When selected the EPB counter will be set to zero.
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Parking Brake Calibration
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The electric parking brake module will activate the park brake calibration learn procedure when selected. During the learn procedure the rear brakes will cycle several times.
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Parking Brake Cable Apply
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The electric parking brake module will apply the parking brake cable tension to diagnose a possible EPB switch failure.
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Parking Brake Cable Release
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The electric parking brake module will release the parking brake cable to diagnose a possible EPB switch failure.
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Parking Brake Cable Replacement
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The electric parking brake module will unwind the parking brake cable for replacement or service when selected.
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Parking Brake Actuator DTC Reset
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The electric parking brake module will reset the park brake actuator when commanded.
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Parking Brake Switch Procedure
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The electric parking brake module will test the parking brake switch signals to verify they are working properly or if there is an open circuit.
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