Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2005BLAZER 4WD V6-4.3L VIN XREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONS
2005 Chevrolet Blazer 4WD V6-4.3L VIN X
Scan Tool Data Definitions
2005 Chevrolet Blazer 4WD V6-4.3L VIN XSECTION 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.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.