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
- Ambient Light Sensor
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The scan tool displays inactive or active. When the ambient light sensor detects day light conditions, the scan tool will display inactive. When the ambient light sensor detects low light conditions, the scan tool will display active.
- Backlight Dimming
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The scan tool displays a percentage of the dimmer illumination. The input of the dimmer is displayed as a percentage when the I/P lamps are on.
- Dimmed Illumination
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The scan tool displays a percentage of the dimmer illumination. The input of the dimmer is displayed as a percentage when the I/P lamps are on.
- Domelamp Switch
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The scan tool displays Door/Off/On. The input of the domelamp switch is displayed as On when the domelamp switch is On.
- Headlamps
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The scan tool displays Off/On. The input of the headlamp switch is displayed as On when the headlamps are turned on.
- Instrument Panel Dimmer Switch
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The scan tool displays Down/Normal/Up. The input of the dimmer switch is displayed as Down/Normal/Up depending the direction of the dimmer switch is pressed.
- Instrument Panel Illumination
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The scan tool displays Down/Normal/Up. The input of the dimmer switch is displayed as Down/Normal/Up depending the direction of the dimmer switch is pressed.
- Park Lamp Switch
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The scan tool displays On/Off. The input of the park lamp switch is displayed as On when the park lamps are command On.
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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.