GM Service Manual Online
For 1990-2009 cars only
Table 1: Parking Brake Control Module Scan Tool Data Parameters
Table 2: Parking Brake Control Module Scan Tool Output Controls

Parking Brake Control Module Scan Tool Data Parameters

Parameter

Expected Value

Description

Operating Conditions: Ignition ON, Parking Brake Off

Base Hardware

Varies

The scan tool displays the base hardware number.

BCM Brake Pedal Signal

Valid

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.

Calculated System Temperature

Varies

The scan tool displays the parking brake control module temperature in degrees Celsius.

Calibrations

Varies

The scan tool displays the calibration number.

EBCM Emergency Park Brake Enable Signal

Valid

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.

ECM Accelerator Pedal Position Signal

Valid

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.

ECM Clutch Pedal Position Signal

Valid

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.

ECM Vehicle Speed Signal

Valid

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.

End Model

Varies

The scan tool displays the end model number.

OS/Software

Varies

The scan tool displays the software number.

Park Brake Calibration Status

Passed

The scan tool displays Passed or Failed. This parameter displays if the park brake calibration is properly programmed into the parking brake control module.

Park Brake Motor Command

Off

The scan tool displays On or Off. This parameter displays the status of the park brake motor.

Park Brake Motor Direction

Inactive

The scan tool displays Apply, Release or Inactive. This parameter displays the status of the park brake motor direction.

Park Brake Release Reason

None

The scan tool displays None, Ign. Cycled, Spd. Threshold, or Brake Applied. This parameter displays the reason the parking brake was released.

Park Brake Status

Released

The scan tool displays Applied, Released, Malfunction or Invalid. This parameter displays the current status of the parking brake.

Park Brake Switch

Inactive

The scan tool displays Applied, Released, Inactive, or Invalid. This parameter displays the current status of the parking brake switch.

TCM Current Gear Signal

Valid

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.

VIN

Varies

The scan tool displays the vehicle identification number.

Parking Brake Control Module Scan Tool Output Controls

Output Control

Description

Parking Brake Calibration

The parking brake control module will activate the park brake calibration learn procedure when selected. The park brake calibration learn procedure should start.

Parking Brake Cable Apply

The parking brake control module will apply the parking brake cable when On is selected. The parking brake cable should be applied.

Parking Brake Cable Release

The parking brake control module will release the parking brake cable when On is selected. The parking brake cable should be released.

Parking Brake Cable Replacement

The parking brake control module will loosen the parking brake cable for replacement when selected.