Blazer 4WD V6-4.3L VIN X (2005)
Body Control Module: Scan Tool Testing and Procedures
Scan Tool Data Definitions
SCAN TOOL DATA DEFINITIONS
DATA
Battery Voltage: The scan tool displays the battery voltage.
RAP Timer: The scan tool displays the seconds left before the BCM turns the RAP relay OFF. The BCM uses this feature to allow the operation of
the radio and the power windows for up to 1198 seconds (approximately 20 minutes) after the ignition is turned OFF. After the time has elapsed or
the door is opened the BCM will open the ground circuit for the RAP relay.
INPUT 1
Driver Door Jamb Sw.: The scan tool displays the position of the driver door. The scan tool displays ACTIVE when the driver door is open.
Ignition 1: The BCM uses this data in order to determine the position of the ignition switch. The scan tool displays ACTIVE when the ignition switch
is in the RUN or CRANK position.
Ignition 3: The BCM uses this data in order to determine the position of the ignition switch. The scan tool displays ACTIVE when the ignition switch
is in the RUN position only.
Ignition Power Mode: The scan tool displays the position of the ignition switch. The scan tool displays OFF, RUN, CRANK and UNKNOWN. The
UNKNOWN display is when the BCM can not determine the position of the ignition switch.
Key in Ignition: The scan tool displays the position of the ignition key in the ignition switch cylinder. The scan tool displays YES when the ignition
key is inserted into the ignition switch cylinder. The BCM uses this data in controlling the operation of the reminder chime feature.
Liftglass/Rear Gate: The scan tool displays position of the liftglass/rear gate.
Psgr. Door Jamb/Door Handle Switches: The scan tool displays the position of the passenger door. The scan tool displays ACTIVE when the door
is open.
RAP Relay Feedback: The scan tool displays the state of the RAP relay. The scan tool displays ON when the BCM activates the RAP relay.
OUTPUTS
RAP Relay: The scan tool displays the commanded state of the RAP relay. The scan tool displays ON when the BCM provides ground to the RAP
relay control circuit. The BCM will allow operation of the radio and the power windows with the ignition OFF and the doors closed for up to 1198
seconds (approximately 20 minutes).
MODULE INFORMATION 1
Manufacturers Enable Counter: The scan tool displays the actual value for the manufacturers enable counter (MEC) in the BCM. This information
is for the assembly plant only.
Software Design Suffix: The scan tool displays the version of the software part number in the BCM.
Software Part Number: The scan tool displays the software identification number (ID) in the BCM.
MODULE INFORMATION 2
RAP Calibration Number: The scan tool displays the RAP calibration part number in the BCM.
RAP Suffix: The scan tool displays the RAP identification number in the BCM.
MODULE INFORMATION 3
Module Part Number: The scan tool displays the part number assigned to the BCM that is currently in the vehicle.
