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.
Scan Tool Data Definitions: Inputs
Brake Lamp: The scan tool displays ON or OFF. When the brake lamps are ON, the scan tool displays ON. When the brake lamps are OFF, the scan tool displays OFF.
Courtesy Switch: The scan tool displays Active or Inactive. When the courtesy light switch is ON, the scan tool displays Active. When the courtesy light switch is OFF, the scan tool displays Inactive.
Head Lamp State: The scan tool displays ON or OFF. When the multifunction switch is turned to headlamps ON the scan tool displays ON. When the multifunction switch is turned to headlamps OFF the scan tool displays OFF.
High Beam Lamp: The scan tool displays ON or OFF. When the multifunction switch is turned to headlamps ON and in the high beam position, the scan tool will display ON. When the high beam lamps or the headlamps are turned OFF, the scan tool displays OFF.
Left Turn Signal: The scan tool displays ON or OFF. When the multifunction switch is turned to the left turn signal position the scan tool displays ON. When the left turn signal is turned OFF the scan tool displays OFF.
Park Brake Switch: The scan tool displays Active or Inactive. When the park brake is applied, the scan tool displays active. When the park brake is OFF, the scan tool displays inactive.
Right Turn Signal: The scan tool displays ON or OFF. When the multifunction switch is turned to the right turn signal position the scan tool displays ON. When the right turn signal is turned OFF the scan tool displays OFF.
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.
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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.