BCM Scan Tool Data Definitions

The BCM Scan Tool Data Definitions contains a brief description of all steering column related BCM parameters available on the scan tool.

Column Feedback: The scan tool displays Active or Inactive. When the steering column lock motor is LOCKED, the scan tool will display Inactive. When the steering column lock motor is UNLOCKED, the scan tool displays Active.

Column Lock State: The scan tool displays the current column lock state. This data represents what column lock functional mode the BCM is in. The BCM enters different column lock states based upon information received from various inputs associated with the column lock system.

Column Lock/Unlock A: The scan tool displays Active or Inactive. When the BCM LOCKS the steering column, the scan tool will display Active. When the BCM UNLOCKS the steering column, the scan tool displays Inactive.

Column Lock/Unlock B: The scan tool displays Active or Inactive. When the BCM UNLOCKS the steering column, the scan tool will display Active. When the BCM LOCKS the steering column, the scan tool displays Inactive.

Current Power Mode: The scan tool displays the current power mode. The BCM determines ignition switch position from it's ignition inputs. This ignition switch information is sent on the serial data line to systems that relay on this information to preform certain functions (RAP, wake-up, etc.).

Driver Door Ajar Switch: The scan tool displays Open or Closed. When the driver door is open, the scan tool will display Open. When the driver door is closed, the scan tool displays Closed.

Ignition 1: The scan tool displays ON or OFF. When the BCM detects ignition 1 is present , the scan tool will display Yes. When the BCM does not detect ignition 1, the scan tool will display OFF. This ignition switch information is sent on the serial data line to systems that relay on this information to preform certain functions like RAP, wake-up, etc.

Ignition 2: The scan tool displays ON or OFF. When the BCM detects ignition 2 is present , the scan tool will display Yes. When the BCM does not detect ignition 2, the scan tool will display OFF. This ignition switch information is sent on the serial data line to systems that relay on this information to preform certain functions like RAP, wake-up, etc.

Ignition 3: The scan tool displays ON or OFF. When the BCM detects ignition 3 is present , the scan tool will display Yes. When the BCM does not detect ignition 3, the scan tool will display OFF. This ignition switch information is sent on the serial data line to systems that relay on this information to preform certain functions like RAP, wake-up, etc.

Key In Ignition: The scan tool displays Active or Inactive. When the BCM detects the key is IN the ignition switch, the scan tool will display Active. When the key is removed from the ignition switch, the scan tool will display Inactive.

Key Out of Ignition: The scan tool displays Active or Inactive. When the BCM detects the key is OUT of the ignition switch, the scan tool will display Active. When the key is IN the ignition switch, the scan tool will display Inactive.

Passenger Door Ajar Switch: The scan tool displays Open or Closed. When the passenger door is open, the scan tool will display Open. When the passenger door is closed, the scan tool displays Closed.

SCM Scan Tool Data Definitions

The SCM Scan Tool Data Definitions contains a brief description of all steering column related SCM parameters available on the scan tool.

Column Aft Motor Stop: The scan tool displays 0-5 volts. The value displayed is the position sensor signal voltage where the steering column outward movement will stop. This function may be used to determine if the adjustment range of the steering column has been limited due to an obstruction or binding condition. The stop can be recalibrated by pressing switch 6-8 times in one direction.

Column Fore Motor Stop: The scan tool displays 0-5 volts. The value displayed is the position sensor signal voltage where the steering column inward movement will stop. This function may be used to determine if the adjustment range of the steering column has been limited due to an obstruction or binding condition. The stop can be recalibrated by pressing switch 6-8 times in one direction.

Column Fore/Aft Motor: The scan tool displays In, Out, or Idle. When the SCM supplies voltage to operate the steering column motor In the scan tool displays In and when the SCM supplies voltage to operate the steering column motor out the scan tool displays Out. This may occur with switch operation or memory operation. When SCM is not supplying voltage to the motor the scan tool displays Idle.

Column Fore/Aft Switch: The scan tool displays In, Out, or Idle. When the Column Fore/Aft Switch is pressed toward the I/P the scan tool displays Out. When the switch is pressed toward the driver the scan tool displays In. When the switch is released the scan tool displays Idle.

Column Position Fdbk: The scan tool displays 0-5 volts. The value displayed is the telescoping column position sensor signal voltage. This voltage varies when the steering column is moved In and Out and is used by the SCM to determine the steering column position when memory settings are stored and recalled.

Memory 1 Stored Position: The scan tool displays 0-5 volts. The value displayed is the position sensor signal voltage stored by the SCM and used to recall the memory 1 position.

Memory 2 Stored Position: The scan tool displays 0-5 volts. The value displayed is the position sensor signal voltage stored by the SCM and used to recall the memory 2 position.

Memory 3 Stored Position: The scan tool displays 0-5 volts. The value displayed is the position sensor signal voltage stored by the SCM and used to recall the memory 3 position.