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 MANUALSCHEVROLET2001LUMINA V6-3.1L VIN JREPAIR AND DIAGNOSISSTARTING AND CHARGINGTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONS
2001 Chevrolet Lumina V6-3.1L VIN J
Scan Tool Data Definitions
2001 Chevrolet Lumina V6-3.1L VIN JSECTION Scan Tool Data Definitions
COMMANDED GEN: The scan tool displays Disabled until the generator is commanded ON by the PCM.
GENERATOR LAMP: The scan tool displays ON/OFF. The scan tool displays OFF until the generator lamp is commanded ON by the PCM.
GENERATOR PWM: The scan tool displays the % time that the generator is ON.
GENERATOR LAMP CIRCUIT: The scan tool displays OK/Fault. The Scan tool displays Fault when the generator lamp circuit is open.
IGNITION 1: The scan tool displays 0-18 Volts. The voltage measured between the module's Ignition 1 voltage circuit and ground circuit.
VTD FUEL DISABLE: The scan tool displays ON/OFF. The scan tool displays ON when the Vehicle Theft Deterrent (VTD) is active.
GENERATOR LAMP: The scan tool displays ON/OFF. The scan tool displays OFF until the generator lamp is commanded ON by the PCM.
GENERATOR PWM: The scan tool displays the % time that the generator is ON.
GENERATOR LAMP CIRCUIT: The scan tool displays OK/Fault. The Scan tool displays Fault when the generator lamp circuit is open.
IGNITION 1: The scan tool displays 0-18 Volts. The voltage measured between the module's Ignition 1 voltage circuit and ground circuit.
VTD FUEL DISABLE: The scan tool displays ON/OFF. The scan tool displays ON when the Vehicle Theft Deterrent (VTD) is active.
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.