Use the scan tool data display values and definitions information in order to
assist in diagnosing vehicle malfunctions. Compare the vehicles actual scan tool
data with the typical data display value table information. Use the information
in order to aid in understanding the nature of the concern when the vehicle data
does not match the typical data display values.
The scan tool data values were taken from a known good vehicle under the following
conditions:
• | The ignition switch is in the ON position. |
• | The engine is not running. |
• | The vehicle is in PARK. |
Battery Voltage Signal: This parameter displays the amount of
battery voltage available to the body control module (BCM).
Calibration ID: This parameter displays the identification number
of the calibrations in the BCM.
Crank Voltage: This parameter displays the amount of battery
voltage available to the BCM.
End Model Part Number: This parameter displays the part number
of the BCM.
Ignition Accessory: The BCM uses this data in order to determine
the position of the ignition switch. Active is displayed when the ignition switch
is in the Run or ACCY position.
Ignition 1 Run/Crank: The BCM uses this data in order to determine
the position of the ignition switch. Active is displayed when the ignition switch
is in the Run or CRANK position.
Ignition Off/Run/Crank: The BCM uses this data in order to determine
the position of the ignition switch. Active is displayed when the ignition switch
is in the Run position.
Software Part Number: This parameter displays the part number
of the software that is in the BCM.
Year Module Built: The year that the BCM was built.