GM Service Manual Online
For 1990-2009 cars only

BCM Scan Tool Data Definitions

Current Power Mode: The scan tool displays the current power mode. The BCM determines the current power mode from its ignition inputs. This information is sent on the serial data line to systems that rely on this information to preform functions based on power modes.

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.

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.

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 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.

DDM Scan Tool Data Definitions

Door Ajar: The scan tool displays Closed or Ajar. When the driver door is open the scan tool displays Ajar. When the driver door is closed the scan tool displays Closed.

PDM Scan Tool Data Definitions

Door Ajar: The scan tool displays Closed or Ajar. When the passenger door is open the scan tool displays Ajar. When the passenger door is closed the scan tool displays Closed.